Texas Instruments | Selecting the Correct LP8860-Q1 EEPROM Version (Rev. C) | Application notes | Texas Instruments Selecting the Correct LP8860-Q1 EEPROM Version (Rev. C) Application notes

Texas Instruments Selecting the Correct LP8860-Q1 EEPROM Version (Rev. C) Application notes
Application Report
SNVA757C – September 2016 – Revised August 2017
Selecting the Correct LP8860-Q1 EEPROM Version
Jeremy Yaeger, Sung Ho Yoon
ABSTRACT
The LP8860-Q1 device is an automotive LED driver to support infotainment display, automotive cluster,
and lighting applications. The LP8860-Q1 has numerous features that are configured by storing different
values in the EEPROM. This document explains the individual EEPROM configuration settings for all
released LP8860-Q1 devices so that the user can select the correct device for a customer application.
1
LP8860-Q1 Version Summary
Table 1 below compares key features and operating conditions for all orderable versions of the LP8860Q1. Boost switching frequency, the number of channels, maximum LED current, and input brightness
control method are considered critical specs and are highlighted in bold.
Table 1. Summary of LP8860A - LP8860H EEPROM Configurations
PARAMETER
Boost
A
B
C
D
E
F
G
H
ƒSW
300 kHz
300 kHz
2.2 MHz
400 kHz
400 kHz
400 kHz
400 kHz
800 kHz
Switching Current
Limit
9A
9A
9A
9A
4A
4A
4A
4A
VDD
5V
3.3 V
5V
5V
5V
5V
5V
5V
Number of
Channels
4 strings
3 strings
3 strings
4 strings
1 string
2 strings
1 string
4 strings
Maximum LED
Current per
Channel
130 mA
70 mA
104 mA
150 mA
400 mA
90 mA
400 mA
80 mA
Disabled
Enabled
Enabled
Enabled
Disabled
Disabled
Disabled
Disabled
Input Brightness
Control Method
I C/SPI BRT
Register
PWM Pin
Input
PWM Pin
Input
PWM Pin
Input
I C/SPI BRT
Register
PWM Pin
Input (Direct)
I C/SPI BRT
Register
PWM Pin
Input
LED Output
Dimming Method
PWM
PWM
PWM
PWM
Hybrid
Dimming
PWM
Hybrid Dimming
PWM
Output PWM
Dimming
Frequency
4.883 kHz
Depends on
VSYNC
4.883 kHz
4.883 kHz
= 11 ×
F_VSYNC
= F_PWMIN
4.883 kHz
4.883 kHz
ISET Resistor
Control
LED Driver
Fault
Handling
TEMP
COMP
SYNC
2
2
2
Dimming Ratio
1024:1
1024:1
1024:1
1024:1
15000:1
> 32000:1
> 4096:1
1024:1
Short LED Fault
Threshold
10.6 V
10.6 V
10.6 V
10.6 V
10.6 V
10.6 V
10.6 V
6.9 V
VIN OVP Level
22.5 V
22.5 V
Disabled
22.5 V
22.5 V
22.5 V
Disabled
22.5 V
VIN UVLO Level
3V
3V
3V
3V
3V
3V
3V
5V
VDD UVLO
3V
3V
3V
3V
3V
3V
3V
3V
Input OCP Limit
8A
8A
8A
8A
6A
6A
6A
6A
Internal
Temperature
Compensation
Disabled
Enabled,
100°C
Disabled
Disabled
Disabled
Disabled
Disabled
Disabled
External
Temperature
Compensation
Disabled
Enabled,
current
Enabled,
current
Disabled
Disabled
Disabled
Disabled
Disabled
VSYNC Input
Disabled
Enabled
Disabled
Disabled
Enabled
Disabled
Disabled
Disabled
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LP8860-Q1 Version Summary
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Table 2. Summary of LP8860J - LP8860L EEPROM Configurations
PARAMETER
Boost
LED
Driver
Fault
Handling
TEMP
COMP
SYNC
J
L
N
R
ƒSW
2.2 MHz
400 kHz
2.2 MHz
2.2 MHz
Switching
Current Limit
6A
3A
9A
9A
VDD
3.3 V
3.3 V
3.3 V
3.3 V
Number of
Channels
3 strings
3 strings
2 strings
4 strings
Maximum LED
Current per
Channel
80 mA
80 mA
150 mA
150 mA
ISET Resistor
Control
Enabled
Enabled
Enabled
Enabled
Input Brightness
Control Method
I2C/SPI BRT Register
PWM Pin Input
I2C/SPI BRT Register
PWM Pin Input
LED Output
Dimming
Method
PWM
Hybrid Dimming
PWM
PWM
Output PWM
Dimming
Frequency
9.766 kHz
4.883 kHz
= 11 × F_VSYNC
4.883 kHz
Dimming Ratio
1024:1
4096:1
8192:1
1024:1
Short LED Fault
Threshold
6.9 V
10.6 V
10.6 V
10.6 V
VIN OVP Level
22.5 V
Disabled
22.5 V
Disabled
VIN UVLO
Level
5V
3V
3V
3V
VDD UVLO
3V
3V
2.5 V
2.5 V
Input OCP Limit
6A
6A
8A
8A
Internal
Temperature
Compensation
Disabled
Disabled
Disabled
Disabled
External
Temperature
Compensation
Enabled, current
Disabled
Disabled
Disabled
VSYNC Input
Disabled
Disabled
Enabled
Disabled
Detailed configuration information and reference schematics for each LP8860-Q1 version is listed in the
rest of the document. The full bit descriptions for the EEPROM registers are found in the LP8860-Q1 data
sheet.
2
Selecting the Correct LP8860-Q1 EEPROM Version
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2
Specific EEPROM Versions
2.1
A Version
The LP8860A-Q1 is configured for four strings × 130 mA using a 5-V VDD and I2C or SPI to control
brightness. Table 3 lists detailed configurations and full EEPROM information for the LP8860A-Q1.
Table 3. Detailed EEPROM Configuration: LP8860A-Q1
A
Boost
Switching Current Limit
9A
SYNC Input
Disabled
2 × Charge Pump
Disabled
Spread Spectrum
Disabled
ƒSW
300 kHz
VDD
5V
Initial Boost Voltage
31.5 V
Input Brightness Control Method
I2C/SPI BRT Register
Maximum LED Current per Channel
130 mA
ISET Resistor Control
Disabled
LED Driver
Fault Handling
Number of Channels
4 strings
Channel Phase Shift
90 degrees (4 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
4.883 kHz
Dimming Resolution
10-bit PWM + 4-bit dither
Drive Strength and Rise Time
200 ns
Dimming Ratio
1024:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
22.5 V
VIN UVLO Level
3V
VDD UVLO
3V
Input OCP Limit
8A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
Temperature Compensation
VSYNC and PLL
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EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Disabled
VSYNC input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
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Table 4. EEPROM Register Values: LP8860A-Q1
4
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
11101101
ED
61
11011111
DF
62
11011100
DC
63
11110000
F0
64
11011111
DF
65
11100101
E5
66
11110010
F2
67
01110111
77
68
01110111
77
69
01110001
71
6A
00111111
3F
B7
6B
10110111
6C
00010111
17
6D
11101111
EF
6E
10110000
B0
6F
10000111
87
70
11001110
CE
71
01110010
72
72
11100101
E5
73
11011111
DF
74
00110101
35
75
00000110
06
76
11011100
DC
77
11111111
FF
78
00111110
3E
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Figure 1 shows the use case for the LP8860A-Q1
RISENSE
20m
L1
22uH to 33uH
Q2
40V, 8A
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
SD
VSENSE_P
CVDD
1uF
VSENSE_N
VDD
5V
GD
ISENSE
RSENSE
25m
C1P
CPUMP
CPUMP
10uF
Q1
60V, 9A
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
OUT4
SYNC
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
VSYNC
SGND
FILTER
PGND
LGND
Figure 1. Use Case for LP8860A-Q1
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B Version
The LP8860B-Q1 is configured for three strings × 70 mA using a 3.3-V VDD and PWM pin to control
brightness. LED current can be adjusted using an ISET resistor. Table 5 lists detailed configurations and
full EEPROM information for the LP8860B-Q1.
Table 5. Detailed EEPROM Configuration for LP8860B-Q1
B
Switching Current Limit
9A
SYNC Input
Disabled
2 × Charge Pump
Enabled
Boost
LED Driver
300 kHz
VDD
3.3 V
24 V
Input Brightness Control Method
PWM pin input
Maximum LED Current per Channel
70 mA
ISET Resistor Control
Enabled
Number of Channels
3 strings
Channel Phase Shift
120 degrees (3 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
4.883 kHz
Dimming Resolution
Depends on VSYNC
Drive Strength and Rise Time
200 ns
Dimming Ratio
1024:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 450 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
22.5 V
VIN UVLO Level
3V
VDD UVLO
3V
Input OCP Limit
8A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Enabled, 100°C
External Temperature Compensation
Enabled, current dimming mode
Current Dimming Knee Point
6 µA
EXT_TEMP_GAIN[3:0]
14
EXT_TEMP_LEVEL_HIGH[3:0]
6.69 kΩ
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Enabled, 10-MHz PLL
VSYNC and PLL
6
Enabled
ƒSW
Initial Boost Voltage
Fault Handling
Temperature Compensation
Spread Spectrum
Selecting the Correct LP8860-Q1 EEPROM Version
VSYNC input
Enabled
SYNC or HSYNC
HSYNC
PWM_SYNC
1
Pre-divider
7
Slow PLL Divider
0
R_SEL
3
SEL_Divider
Fast
PWM_FREQ
0
PWM_RES
1
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Table 6. EEPROM Register Values: LP8860B-Q1
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
01101110
6E
61
00000010
02
62
01011100
5C
63
11000010
C2
64
01011100
5C
65
11101100
EC
66
01111000
78
67
01110111
77
68
01110111
77
69
11100001
E1
6A
10111111
BF
6B
00000000
00
6C
11000000
C0
6D
11110111
F7
6E
00000000
00
6F
00000111
07
70
00001111
0F
71
11110010
F2
72
11100101
E5
73
00010000
10
74
00110101
35
75
00000110
06
76
10001010
8A
77
11011111
DF
78
10000001
81
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Figure 2 shows the use case for the LP8860B-Q1.
RISENSE
20m
L1
22uH to 33uH
Q2
40V, 8A
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
SD
VSENSE_N
CVDD
1uF
VSENSE_P
VDD
3.3V
Q1
60V, 9A
GD
ISENSE
C2X
1uF
RSENSE
25m
C1P
CPUMP
10uF
CPUMP
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
NTC
MISO
NSS
VSYNC
SGND
161nF
11.2k
PGND
FILTER
LGND
12nF
Figure 2. Use Case for LP8860B-Q1
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2.3
C Version
The LP8860C-Q1 is configured for three strings × 104 mA using a 5-V VDD and PWM pin to control
brightness. LED current can be adjusted using an ISET resistor. Table 7 lists detailed configurations and
full EEPROM information for the LP8860C-Q1.
Table 7. Detailed EEPROM Configuration for LP8860C-Q1
C
Boost
Switching Current Limit
9A
SYNC Input
Disabled
2 × Charge Pump
Disabled
Spread Spectrum
Disabled
ƒSW
2.2 MHz
VDD
3.3 V
Initial Boost Voltage
46 V
Input Brightness Control Method
PWM pin input
Maximum LED Current per Channel
104 mA
ISET Resistor Control
Enabled
LED Driver
Fault Handling
Number of Channels
3 strings
Channel Phase Shift
120 degrees (3 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
4.883 kHz
Dimming Resolution
10-bit PWM + 4-bit dither
Drive Strength and Rise Time
200 ns
Dimming Ratio
1024:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
Disabled
VIN UVLO Level
3V
VDD UVLO
3V
Input OCP Limit
8A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Enabled, current dimming mode
Current Dimming Knee Point
2 µA
Temperature Compensation
VSYNC and PLL
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EXT_TEMP_GAIN[3:0]
14
EXT_TEMP_LEVEL_HIGH[3:0]
7.2 kΩ
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Disabled, 5-MHz oscillator
VSYNC input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
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Table 8. EEPROM Register Values for LP8860C-Q1
10
ADDRESS (HEX)
VALUE (BIN)
60
00101101
2D
61
11011101
DD
62
11011100
DC
63
11100010
E2
64
01011111
5F
65
11100101
E5
66
11111000
F8
67
01110111
77
68
01110111
77
69
11100001
E1
6A
10111111
BF
6B
11111111
FF
6C
00010111
17
6D
11101111
EF
6E
10110000
B0
6F
00000100
04
70
11001110
CE
71
00000111
07
72
11100101
E5
73
11111100
FC
74
00110101
35
75
10101110
AE
76
11011100
DC
77
11001111
CF
78
00111110
3E
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VALUE (HEX)
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Figure 3 shows the use case for the LP8860C-Q1.
RISENSE
20m
L1
4.7uH to 10uH
Q2
40V, 8A
D1
60V
VBATT
RSD
20k
CIN
20uF
COUT
20uF
VDD
C1N
SD
VSENSE_N
CVDD
1uF
VSENSE_P
VDD
5V
Q1
60V, 9A
GD
ISENSE
RSENSE
25m
C1P
CPUMP
CPUMP
10uF
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
NTC
MISO
NSS
VSYNC
SGND
FILTER
PGND
LGND
Figure 3. Use Case for LP8860C-Q1
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D Version
The LP8860D-Q1 is configured for four strings × 150 mA using a 5-V VDD and PWM pin to control
brightness. LED current can be adjusted using an ISET resistor. Table 9 lists detailed configurations and
full EEPROM information for LP8860D-Q1.
Table 9. Detailed EEPROM Configuration for LP8860D-Q1
D
Switching Current Limit
9A
SYNC Input
Disabled
2 × Charge Pump
Disabled
Spread Spectrum
Disabled
ƒSW
400 kHz
Boost
LED Driver
VDD
5V
Initial Boost Voltage
25 V
Input Brightness Control Method
PWM pin input
Max LED current per channel
150 mA
ISET Resistor Control
Enabled
Number of Channels
4 strings
Channel Phase Shift
90 degrees (4 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
4.883 kHz
Dimming Resolution
10-bit PWM + 4-bit dither
Drive Strength and Rise Time
200 ns
Dimming Ratio
1024:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
22.5
VIN UVLO Level
3V
VDD UVLO
3V
Fault Handling
Temperature Compensation
Input OCP Limit
8A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Disabled, 5-MHz oscillator
VSYNC and PLL
12
Selecting the Correct LP8860-Q1 EEPROM Version
VSYNC Input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
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Table 10. EEPROM Register Values for LP8860D-Q1
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
11101111
EF
61
11111111
FF
62
11011100
DC
63
11110000
F0
64
11011111
DF
65
11100101
E5
66
11111000
F8
67
01110111
77
68
01110111
77
69
01110001
71
6A
00111111
3F
B7
6B
10110111
6C
00010111
17
6D
11101111
EF
6E
10110000
B0
6F
10000111
87
70
11001110
CE
71
01110011
73
72
11100101
E5
73
11010010
D2
74
00110101
35
75
00000110
06
76
11011100
DC
77
11111111
FF
78
00111110
3E
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Figure 4 shows the use case for the LP8860D-Q1.
RISENSE
20m
L1
22uH to 33uH
Q2
40V, 8A
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
SD
VSENSE_N
CVDD
1uF
VSENSE_P
VDD
5V
Q1
60V, 9A
GD
ISENSE
RSENSE
25m
C1P
CPUMP
CPUMP
10uF
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
SGND
VSYNC
PGND
FILTER
LGND
Figure 4. Use Case for LP8860D-Q1
14
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2.5
E Version
The LP8860E-Q1 is configured to use all four outputs to drive a single 400-mA LED string using a 5-V
VDD and I2C or SPI to control brightness. Table 11 lists detailed configurations and full EEPROM
information for the LP8860E-Q1.
Table 11. Detailed EEPROM Configuration for LP8860E-Q1
E
Boost
Switching Current Limit
4A
SYNC Input
Disabled
2 × Charge Pump
Disabled
Spread Spectrum
Enabled
ƒSW
400 kHz
VDD
5V
Initial Boost Voltage
30 V
Input Brightness Control Method
I2C/SPI BRT Register
Maximum LED Current per Channel
400 mA
ISET Resistor Control
Disabled
Number of Channels
1 string (4 channels combined)
LED Driver
Fault Handling
Channel Phase Shift
No phase shift
LED Output Dimming Method
Hybrid dimming
Current to PWM Switch Point
0.125
Current Linearity Correction Slope
1
Output PWM Dimming Frequency
= 11 × F_VSYNC
Dimming Resolution
13-bit PWM + 4-bit dither
Drive Strength and Rise Time
100 ns
Dimming Ratio
15000:1 (F_SYNC = 60 Hz)
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
22.5
VIN UVLO Level
3V
VDD UVLO
3V
Input OCP Limit
6A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
Temperature Compensation
VSYNC and PLL
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EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Enabled = 8192 × 11 × F_VSYNC
VSYNC Iinput
Enabled
SYNC or HSYNC
VSYNC
PWM_SYNC
1
Pre-divider
0
Slow PLL Divider
10
R_SEL
0
SEL_Divider
Slow
PWM_FREQ
0
PWM_RES
3
Selecting the Correct LP8860-Q1 EEPROM Version
Copyright © 2016–2017, Texas Instruments Incorporated
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Specific EEPROM Versions
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Table 12. EEPROM Register Values: LP8860E-Q1
16
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
11110010
F2
61
00000000
00
62
11010100
D4
63
11011011
DB
64
11011111
DF
65
00011101
1D
66
01110010
72
67
01110111
77
68
01110111
77
69
01110001
71
6A
00111011
3B
6B
00000000
00
6C
11001010
CA
6D
00010000
10
6E
10110000
B0
6F
10000100
84
70
11000100
C4
71
11110011
F3
72
11100101
E5
73
11011100
DC
74
00110101
35
75
00000110
06
76
11011100
DC
77
11111111
FF
78
00111110
3E
Selecting the Correct LP8860-Q1 EEPROM Version
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Figure 3 shows the use case for the LP8860E-Q1.
RISENSE
20m
L1
22uH to 33uH
Q2
40V, 6A
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
SD
CVDD
1uF
VSENSE_N
VSENSE_P
VDD
5V
GD
ISENSE
RSENSE
25m
C1P
CPUMP
CPUMP
10uF
Q1
60V, 4A
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
VSYNC
SGND
1.4nF
85k
PGND
FILTER
LGND
100nF
Figure 5. Use Case for LP8860E-Q1
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2.6
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F Version
The LP8860F-Q1 is configured for two strings × 90 mA using a 5-V VDD and PWM pin to control
brightness. LP8860F-Q1 is configured into direct-PWM mode, which bypasses mode brightness path
features similar to the LP8861-Q1. Table 13 lists detailed configurations and full EEPROM information for
the LP8860F-Q1.
Table 13. Detailed EEPROM Configuration: LP8860F-Q1
F
Switching Current Limit
4A
SYNC Input
Disabled
2 × Charge Pump
Disabled
Boost
LED Driver
400 kHz
VDD
5V
26 V
Input Brightness Control Method
PWM pin input (direct)
Maximum LED Current per Channel
90 mA
ISET Resistor Control
Disabled
Number of Channels
2 strings
Channel Phase Shift
No phase shift
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
= F_PWMIN
Dimming Resolution
N/A
Drive Strength and Rise Time
100 ns
Dimming Ratio
> 32000:1
Sloper
N/A
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
22.5
VIN UVLO Level
3V
VDD UVLO
3V
Input OCP Limit
6A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Disabled 5-MHz oscillator
VSYNC and PLL
18
Enabled
ƒSW
Initial Boost Voltage
Fault Handling
Temperature Compensation
Spread Spectrum
Selecting the Correct LP8860-Q1 EEPROM Version
VSYNC input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
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Table 14. EEPROM Register Values for LP8860F-Q1
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
11111110
FE
61
01100110
66
62
11010100
D4
63
11010100
D4
64
11011111
DF
65
00000101
05
66
01110011
73
67
01110111
77
68
01110111
77
69
01110001
71
6A
00111011
3B
6B
00000000
00
6C
00001010
0A
6D
00100000
20
6E
10110100
B4
6F
10000100
84
70
11000100
C4
71
11110011
F3
72
11100101
E5
73
11010100
D4
74
00110101
35
75
00000000
00
76
11011100
DC
77
11111111
FF
78
00111110
3E
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Specific EEPROM Versions
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Figure 6 shows the use case for the LP8860F-Q1.
RISENSE
20m
L1
22uH to 33uH
Q2
40V, 6A
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
SD
VSENSE_N
CVDD
1uF
VSENSE_P
VDD
5V
GD
ISENSE
RSENSE
25m
C1P
CPUMP
CPUMP
10uF
Q1
60V, 4A
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
VSYNC
SGND
FILTER
PGND
LGND
Figure 6. Use Case for LP8860F-Q1
20
Selecting the Correct LP8860-Q1 EEPROM Version
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2.7
G Version
The LP8860G-Q1 is configured for one string × 400 mA using a 5-V VDD and I2C or SPI to control
brightness. Table 15 lists detailed configuration and full EEPROM information for the LP8860G-Q1.
Table 15. Detailed EEPROM Configuration: LP8860G-Q1
A
Boost
Switching Current Limit
4A
SYNC Input
Disabled
2 × Charge Pump
Disabled
Spread Spectrum
Disabled
ƒSW
400 kHz
VDD
5V
Initial Boost Voltage
35 V
Input Brightness Control Method
I2C/SPI BRT Register
Maximum LED current per Channel
400 mA
ISET Resistor Control
Disabled
Number of Channels
1 string (4 channels combined)
LED Driver
Fault Handling
Channel Phase Shift
Single phase
LED Output Dimming Method
Hybrid dimming
Current to PWM Switch Point
12.5%
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
4.883 kHz
Dimming Resolution
13-bit PWM + 4-bit dither
Drive Strength and Rise Time
100 ns
Dimming Ratio
4096:1
Sloper
105 ms
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
Disabled
VIN UVLO Level
3V
VDD UVLO
3V
Input OCP Limit
6A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
Temperature Compensation
VSYNC and PLL
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EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Enabled
VSYNC input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
Selecting the Correct LP8860-Q1 EEPROM Version
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Specific EEPROM Versions
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Table 16. EEPROM Register Values: LP8860G-Q1
22
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
11110010
F2
61
00000000
00
62
11010100
D4
63
11011011
DB
64
11011111
DF
65
00011101
1D
66
01110010
72
67
01110111
77
68
01110111
77
69
01110001
71
6A
00111011
3B
6B
00000000
00
6C
00001010
0A
6D
00110000
30
6E
10110000
B0
6F
10000100
84
70
11000100
C4
71
11110011
F3
72
11100101
E5
73
11100110
E6
74
00110101
35
75
00000110
06
76
11011100
DC
77
11111111
FF
78
00111110
3E
Selecting the Correct LP8860-Q1 EEPROM Version
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Figure 7 shows the use case for the LP8860G-Q1
RISENSE
20m
L1
22uH to 33uH
Q2
40V, 6A
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
CPUMP
10uF
SD
CVDD
1uF
VSENSE_N
VSENSE_P
VDD
5V
GD
Q1
60V, 4A
ISENSE
RSENSE
25m
C1P
CPUMP
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
VSYNC
SGND
PGND
FILTER
LGND
Figure 7. Use Case for LP8860G-Q1
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Specific EEPROM Versions
2.8
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H Version
The LP8860H-Q1 is configured for four strings × 80 mA using a 5-V VDD and PWM pin to control
brightness. Table 17 lists detailed configurations and full EEPROM information for LP8860H-Q1.
Table 17. Detailed EEPROM Configuration: LP8860H-Q1
H
Switching Current Limit
4A
SYNC Input
Disabled
2 × Charge Pump
Disabled
Spread Spectrum
Disabled
ƒSW
800 kHz
Boost
LED Driver
VDD
5V
Initial Boost Voltage
25 V
Input Brightness Control Method
PWM pin input (direct)
Maximum LED current per channel
80 mA
ISET Resistor Control
Disabled
Number of Channels
4 strings
Channel Phase Shift
90 degrees (4 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
4.883 kHz
Dimming Resolution
10-bit PWM + 4-bit dither
Drive Strength and Rise Time
200 ns
Dimming Ratio
1024:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
6.9 V
VIN OVP Level
22.5
VIN UVLO Level
5V
VDD UVLO
3V
Fault Handling
Temperature Compensation
Input OCP Limit
6A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Disabled 5-MHz oscillator
VSYNC and PLL
24
Selecting the Correct LP8860-Q1 EEPROM Version
VSYNC input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
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Table 18. EEPROM Register Values: LP8860H-Q1
ADDRESS (HEX)
VALUE (BIN)
60
11101100
VALUE (HEX)
EC
61
11001100
CC
62
01011100
5C
63
11010000
D0
64
11010111
D7
65
11100101
E5
66
01110000
70
67
01110111
77
68
01110111
77
69
01110001
71
6A
00111011
3B
B7
6B
10110111
6C
00010111
17
6D
11101111
EF
6E
00010000
10
6F
10001011
8B
70
11000100
C4
71
00110101
35
72
11100101
E5
73
00010010
12
74
01000101
45
75
11000110
C6
76
10001100
8C
77
11111111
FF
78
00111110
3E
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Figure 8 shows the use case for the LP8860H-Q1.
RISENSE
20m
L1
22uH to 33uH
Q2
40V, 6A
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
SD
VSENSE_N
CVDD
1uF
VSENSE_P
VDD
5V
Q1
60V, 4A
GD
ISENSE
RSENSE
25m
C1P
CPUMP
CPUMP
10uF
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
SGND
VSYNC
PGND
FILTER
LGND
Figure 8. Use Case for LP8860H-Q1
26
Selecting the Correct LP8860-Q1 EEPROM Version
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2.9
J Version
The LP8860J-Q1 is configured for three strings × 80 mA using a 3.3-V VDD and I2C or SPI to control
brightness. LED current can be adjusted using an ISET resistor. Table 19 lists detailed configurations and
full EEPROM information for LP8860J-Q1.
Table 19. Detailed EEPROM Configuration: LP8860J-Q1
J
Boost
Switching Current Limit
6A
SYNC Input
Disabled
2 × Charge Pump
Enabled
Spread Spectrum
Enabled
ƒSW
2.2 MHz
VDD
3.3 V
Initial Boost Voltage
28 V
2
Input Brightness Control Method
LED Driver
Fault Handling
I C/SPI BRT Register
Max LED current per channel
80 mA
ISET Resistor Control
Enabled
Number of Channels
3 strings
Channel Phase Shift
120 degrees (3 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
9.766 kHz
Dimming Resolution
10-bit PWM + 4-bit dither
Drive Strength and Rise Time
200 ns
Dimming Ratio
1024:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
6.9 V
VIN OVP Level
22.5
VIN UVLO Level
5V
VDD UVLO
3V
Input OCP Limit
6A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Enabled current dimming mode
Current Dimming Knee Point
6 µA
Temperature Compensation
VSYNC and PLL
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EXT_TEMP_GAIN[3:0]
14
EXT_TEMP_LEVEL_HIGH[3:0]
8.49 kΩ
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Disabled 5-MHz oscillator
VSYNC input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
Selecting the Correct LP8860-Q1 EEPROM Version
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27
Specific EEPROM Versions
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Table 20. EEPROM Register Values: LP8860J-Q1
28
ADDRESS (HEX)
VALUE (BIN)
60
01101111
6F
61
11111111
FF
62
11011100
DC
63
11000010
C2
64
11010111
D7
65
11100101
E5
66
11111010
FA
67
01110111
77
68
01110111
77
69
11100001
E1
6A
10111011
BB
6B
10110111
B7
6C
00010111
17
6D
11101111
EF
6E
10110001
B1
6F
10001011
8B
70
11001001
C9
71
10000111
87
72
11100101
E5
73
11011000
D8
74
01000101
45
75
10000110
86
76
11011110
DE
77
10101111
AF
78
00111111
3F
Selecting the Correct LP8860-Q1 EEPROM Version
VALUE (HEX)
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Figure 9 shows the use case for the LP8860J-Q1.
L1
4.7uH to 10uH
Q2
40V, 6A
RISENSE
20m
D1
60V
VBATT
RSD
20k
CIN
20uF
COUT
20uF
VDD
C1N
SD
VSENSE_N
CVDD
1uF
VSENSE_P
VDD
3.3V
Q1
60V, 6A
GD
ISENSE
C2X
1uF
RSENSE
25m
C1P
CPUMP
10uF
CPUMP
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
NTC
MISO
NSS
VSYNC
SGND
FILTER
PGND
LGND
Figure 9. Use Case for LP8860J-Q1
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2.10 L Version
The LP8860L-Q1 is configured for 3 strings × 80 mA using a 3.3-V VDD with charge pump and PWM
input to control the brightness. LED current can be adjusted using an ISET resistor. lists detailed
configurations and full EEPROM information for LP8860L-Q1.
Table 21. Detailed EEPROM Configuration: LP8860L-Q1
L
Switching Current imit
3A
SYNC Input
Disabled
2 × Charge Pump
Enabled
Boost
LED Driver
400 kHz
VDD
3.3 V
28.5 V
Input Brightness Control Method
PWM pin input
Maximum LED current per channel
80 mA
ISET Resistor Control
Enabled
Number of Channels
3 strings
Channel Phase Shift
120 degrees (3 phases)
LED Output Dimming Method
Hybrid dimming
Current to PWM Switch Point
0.125
Current Linearity Correction Slope
1
Output PWM Dimming Frequency
4.883 kHz
Dimming Resolution
12-bit PWM + 4-bit dither
Drive Strength and Rise Time
100 ns
Dimming Ratio
4096:1
Sloper
105 ms
Driver Headroom Voltage
VSAT + 300 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
Disabled
VIN UVLO Level
3V
VDD UVLO
3V
Input OCP Limit
6A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Enabled
VSYNC and PLL
30
Enabled
ƒSW
Initial Boost Voltage
Fault Handling
Temperature Compensation
Spread Spectrum
Selecting the Correct LP8860-Q1 EEPROM Version
VSYNC input
Disabled
SYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
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Table 22. EEPROM Register Values: LP8860L-Q1
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
11110100
F4
61
00001001
09
62
01000011
43
63
11000011
C3
64
01011101
5D
65
00010100
14
66
00111100
3C
67
01110111
77
68
01110111
77
69
00000000
00
6A
00001011
0B
6B
00000000
00
6C
00000000
00
6D
00110000
30
6E
00010000
10
6F
10000100
84
70
00000011
03
71
10101011
AB
72
01100000
60
73
00011001
19
74
01000101
45
75
00000000
00
76
10000010
82
77
00000000
00
78
00000000
00
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Figure 10 shows the use case for the LP8860L-Q1
L1
22uH to 33uH
Q2
40V, 6A
RISENSE
20m
D1
60V
VBATT
RSD
20k
CIN
43uF
COUT
43uF
VDD
C1N
SD
VSENSE_N
CVDD
1uF
VSENSE_P
VDD
3.3V
Q1
60V, 3A
GD
ISENSE
C2X
1uF
RSENSE
25m
C1P
CPUMP
10uF
CPUMP
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
VSYNC
SGND
FILTER
PGND
LGND
Figure 10. Use Case for LP8860L-Q1
32
Selecting the Correct LP8860-Q1 EEPROM Version
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2.11 N Version
The LP8860N-Q1 is configured for two strings × 150 mA using a 3.3-V VDD and I2C or SPI to control
brightness. LED current can be adjusted using an ISET resistor. Table 23 lists detailed configuration and
full EEPROM information for LP8860N-Q1.
Table 23. Detailed EEPROM Configuration: LP8860N-Q1
J
Boost
Switching Current Limit
9A
SYNC Input
Enabled
2 × Charge Pump
Enabled
Spread Spectrum
Enabled
ƒSW
2.2 MHz
VDD
3.3 V
Initial Boost Voltage
34 V
2
Input Brightness Control Method
LED Driver
Fault Handling
I C/SPI BRT Register
Max LED current per channel
150 mA
ISET Resistor Control
Enabled
Number of Channels
2 strings
Channel Phase Shift
180 degrees (2 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
= 11 × F_VSYNC
Dimming Resolution
10-bit PWM + 4-bit dither
Drive Strength and Rise Time
100 ns
Dimming Ratio
8192:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
22.5 V
VIN UVLO Level
3V
VDD UVLO
2.5 V
Input OCP Limit
8A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
Temperature Compensation
VSYNC and PLL
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EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Enabled = 8192 × 11 × F_VSYNC
VSYNC input
Enabled
VSYNC or HSYNC
VSYNC
PWM_SYNC
1
Pre-divider
0
Slow PLL Divider
10
R_SEL
0
SEL_Divider
Slow
PWM_FREQ
0
PWM_RES
3
Selecting the Correct LP8860-Q1 EEPROM Version
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33
Specific EEPROM Versions
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Table 24. EEPROM Register Values: LP8860N-Q1
34
ADDRESS (HEX)
VALUE (BIN)
VALUE (HEX)
60
11111111
FF
61
11111111
FF
62
11011100
DC
63
11110100
F4
64
01011111
5F
65
11111011
FB
66
11111010
FA
67
01110111
77
68
01110111
77
69
01110000
70
6A
00111111
3F
6B
00000000
00
6C
11001010
CA
6D
11010000
D0
6E
10110000
B0
6F
10000111
87
70
11001111
CF
71
10100111
A7
72
11100101
E5
73
11100100
E4
74
00110101
35
75
10101110
AE
76
01010010
52
77
11111111
FF
78
00111110
3E
Selecting the Correct LP8860-Q1 EEPROM Version
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Figure 11 shows the use case for the LP8860N-Q1.
RISENSE
20m
L1
4.7uH to 10uH
Q2
40V, 8A
D1
60V
VBATT
RSD
20k
CIN
20uF
COUT
20uF
VDD
C1N
SD
CVDD
1uF
VSENSE_N
VSENSE_P
VDD
3.3V
Q1
60V, 9A
GD
ISENSE
C2X
1uF
RSENSE
25m
C1P
CPUMP
10uF
CPUMP
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
VSYNC
SGND
1.4uF
85k
PGND
FILTER
LGND
100nF
Figure 11. Use Case for LP8860N-Q1
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35
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2.12 R Version
The LP8860R-Q1 is configured for four strings × 150mA using a 3.3-V VDD and PWM input to control
brightness. LED current can be adjusted using an ISET resistor. Table 25 lists detailed configuration and
full EEPROM information for the LP8860R-Q1.
Table 25. Detailed EEPROM Configuration: LP8860R-Q1
J
Switching Current Limit
9A
SYNC Input
Disabled
2 × Charge Pump
Enabled
Boost
LED Driver
2.2 MHz
VDD
3.3 V
30 V
Input Brightness Control Method
PWM pin input
Max LED current per channel
150 mA
ISET Resistor Control
Enabled
Number of Channels
4 strings
Channel Phase Shift
90 degrees (4 phases)
LED Output Dimming Method
PWM
Current to PWM Switch Point
N/A
Current Linearity Correction Slope
N/A
Output PWM Dimming Frequency
4.833 kHz
Dimming Resolution
12-bit PWM + 4-bit dither
Drive Strength and Rise Time
200 ns
Dimming Ratio
1024:1
Sloper
105 ms + advanced slope
Driver Headroom Voltage
VSAT + 50 mV
Short LED Fault Threshold
10.6 V
VIN OVP Level
Disabled
VIN UVLO Level
3V
VDD UVLO
2.5 V
Input OCP Limit
8A
Powerline FET Type
PMOS
SD Pulldown Current
440 µA
Internal Temperature Compensation
Disabled
External Temperature Compensation
Disabled
Current Dimming Knee Point
N/A
EXT_TEMP_GAIN[3:0]
N/A
EXT_TEMP_LEVEL_HIGH[3:0]
N/A
EXT_TEMP_LEVEL_LOW[3:0]
N/A
PLL
Enabled, 20-MHz PLL
VSYNC input
Disabled
VSYNC or HSYNC
N/A
PWM_SYNC
N/A
Pre-divider
N/A
Slow PLL Divider
N/A
R_SEL
N/A
SEL_Divider
N/A
PWM_FREQ
N/A
PWM_RES
N/A
VSYNC and PLL
36
Enabled
ƒSW
Initial Boost Voltage
Fault Handling
Temperature Compensation
Spread Spectrum
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Table 26. EEPROM Register Values: LP8860R-Q1
ADDRESS (HEX)
VALUE (BIN)
60
00101111
2F
61
11111111
FF
62
11011100
DC
63
11110000
F0
64
11011111
DF
65
11110101
F5
66
11111000
F8
67
01110111
77
68
01110111
77
69
11100001
E1
6A
00111111
3F
6B
10110111
B7
6C
00010111
17
6D
11111111
FF
6E
10110000
B0
6F
10000100
84
70
11001111
CF
71
11000111
C7
72
11100101
E5
73
11011100
DC
74
00110101
35
75
10000110
86
76
01011110
5E
77
10111111
BF
78
00111110
3E
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VALUE (HEX)
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Figure 12 shows the use case for the LP8860R-Q1.
RISENSE
20m
L1
4.7uH to 10uH
Q2
40V, 8A
D1
60V
VBATT
RSD
20k
CIN
20uF
COUT
20uF
VDD
C1N
SD
VSENSE_P
CVDD
1uF
VSENSE_N
VDD
3.3V
Q1
60V, 9A
GD
ISENSE
C2X
1uF
RSENSE
25m
C1P
CPUMP
10uF
CPUMP
ISENSE_GND
SQW
FB
VDDIO/EN
OUT1
FAULT
OUT2
PWM
OUT3
SYNC
OUT4
IF
ISET
MOSI/SDA
TSENSE
SCLK/SCL
MISO
NSS
VSYNC
SGND
PGND
FILTER
LGND
Figure 12. Use Case for LP8860R-Q1
38
Selecting the Correct LP8860-Q1 EEPROM Version
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Revision History
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Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from B Revision (June 2017) to C Revision .................................................................................................... Page
•
•
•
•
•
•
•
•
•
•
•
•
•
•
update Table 2 to add information regarding "N" and "R" EEPROM options ..................................................... 1
Changed ƒSW boost value (G) from 800 kHz to 400 kHz ............................................................................. 1
Changed number of LED driver channels (E) from 4 strings to 1 string ........................................................... 1
Changed maximum LED currents per channel (E) from 100 mA to 400 mA ...................................................... 1
Changed LED driver dimming ratio (N) from 1024:1 to 8192:1 ..................................................................... 2
Changed LED driver (E) value from 100 mA to 400 mA ........................................................................... 15
Changed LED driver number of channels (E) from 4 strings to 1 string (4 channels combined) ............................. 15
Changed LED driver current to PWM switch point value from N/A to 12.5% .................................................... 21
Added Section 2.11 section ............................................................................................................ 33
Changed LED driver dimming ratio from 1024:1 to 8192:1 ....................................................................... 33
Changed 161 nF to 1.4 µF in Figure 11 .............................................................................................. 35
Changed 11.2 kΩ to 85 kΩ in Figure 11 .............................................................................................. 35
Changed 12 nF to 100 nF in Figure 11 ............................................................................................... 35
Added Section 2.12 section ............................................................................................................ 36
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39
Revision History
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Changes from A Revision (April 2017) to B Revision .......................................................................................................... Page
• Added split table 2 into Tables 2 and 3 to accommodate additional information; added column to Table 2 for "L" EEPROM
option ....................................................................................................................................... 1
• Added Section 2.10 for L version ...................................................................................................... 30
Changes from Original (September 2016) to A Revision ............................................................................................... Page
•
•
40
Added column to Table 1 for "G" EEPROM option; updated all graphics ......................................................... 1
Added Section 2.7 for G version ....................................................................................................... 21
Revision History
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