TS19601 - RS Components International

TS19601 - RS Components International
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
TO-252-5L
(PPAK)
Pin Definition:
1. VIN
2. ISET
3. GND
4. EN
5. OUT
General Description
The TS19601 is a high voltage, low dropout current regulator of maximum output current up to 700mA. The output
current is decided by an external resistor, and the output sink current could be disabled via OE pin. TS19601
internally also build-in thermal protection to prevent the chip over heat damage.
Features
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Typical Application Circuit
0.5V VDROP @ 700mA
700mA Maximum Output Current
Output Current Controlled by External Resistor
3µs Fast Response Output Stage Enable Control
Output Sustaining Voltage up to 75V
Wide Supply Voltage Range: 5~50V
Applications
●
●
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High Power LED Driver
RGB Full Color Power LED Driver
LCD Monitor/TV LED Backlight Driver
LED Table Lamp
Ordering Information
Part No.
Package
Packing
TS19601CP5 RO
TO-252-5L
2.5Kpcs / 13” Reel
Absolute Maximum Rating
Parameter
Input Voltage
Output Sustaining Voltage
Output Sink Current
Output Enable Voltage
Operating Junction Temperature Range
Storage Temperature Range
Thermal Resistance Junction to Air
Symbol
Value
Unit
VIN
VDSN
IOUT
VEN
TOPR
TSTG
θJA
55
75
700
13.2
+150
-55 ~ +150
80
V
V
mA
V
ºC
ºC
ºC/W
Recommend Operating Conditions
Parameter
Symbol
Min
Typ
Max
Unit
Input Voltage
VIN
5
--
50
V
Output Enable Voltage
VEN
--
--
12
V
Output Sink Current
TOPR
100
--
700
mA
Operating Free-Air Temperature Range
TSTG
-40
--
+85
ºC
1/8
Version: B11
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Electrical Specification (VIN=24V, TA=25oC, unless otherwise specified.)
Parameter
Conditions
Output Current
Output Current Deviation
Min
Typ
Max
VOUT =0.5V, RSET=3kΩ
--
200
--
VOUT =0.5V, RSET=1.71kΩ
--
350
--
VOUT =0.5V, RSET=1kΩ
--
600
--
VOUT =0.5V, IOUT =350mA~600mA
--
--
±5
%
200
--
1400
µA
SET Current Range
Unit
mA
Minimum Output Current
ISET=200µA
--
100
--
mA
Maximum Output Current
ISET=1400µA
--
700
--
mA
Output Dropout Voltage
ISET=1000µA (Note 1)
--
0.35
--
V
Load Regulation
VOUT =0.5V to 3V, IOUT =350mA
--
--
3
mA/V
Line Regulation
VOUT =0.5V, IOUT =350mA, VIN=5~50V
--
0.08
0.15
%/V
0
--
0.8
V
2
--
12
V
Enable Low Input Current
-20
--
+20
µA
Enable High Input Current
-5
--
+5
µA
--
3
--
µS
--
3
--
µS
--
--
5
mA
Enable Low Input Voltage
Enable High Input Voltage
Output Enable Delay Time
Output Disable Delay Time
Should lower than VIN
EN from low to high. VOUT=0.5V,
IOUT=350mA, Duty 50%
EN from high to low. VOUT=0.5V,
IOUT=350mA, Duty 50%
Supply Current Consumption
Note 1: Output Dropout Voltage: Duty 90% x IOUT @ VOUT=0.5V
Pin Function Description
Pin Number
Pin Name
Pin Function
1
VIN
Power Supply Pin
2
ISET
Output Current Setting pin. Connect a resistor from ISET to GND to set the
LED bias current. ISET=1.2V/RSET
3
GND
Ground Pin
4
EN
Output Stage Enable Control pin. High enable the output pin. It can be left
floating for normally on.
5
OUT
Output pin. Sink current is decided by the current on RSET connected to ISET
pin. IOUT=500 x ISET=500 x 1.2V/RSET
2/8
Version: B11
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Electrical Characteristics Curve
Figure 1. Supply Current vs. Supply Voltage
Figure 2. ISET Voltage vs. Junction Temperature
Figure 3. Output Current vs. Supply Voltage
Figure 4. Output Current vs. Dropout Voltage
3/8
Version: B11
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Application Information
TS19601 is a high voltage, low dropout current regulator for maximum output current up to 700mA with OE pin
control. The current could be linearly adjusted through variable resister connected to ISET pin, or by PWM control
via OE pin. Although the absolute maximum rating of OUT pin 75V, the dropout voltage between OUT pin and
GND pin should not be too large when current is sinking because of the thermal dissipation capability of the
package.
Here are some of the typical application examples:
DC Voltage Input
Any DC voltage level between 5V to 50V could be adopted as power source VDD for typical application of
TS19601 as long as VDD is larger than the total forward voltage drop of the LED string (at expecting current) by
0.35V. If 50V ~ 60V voltage level is adopted as power source to positive end of the LED string, one Zener shunt
regulator could be used to provide appropriate voltage to VDD pin.
4/8
Version: B11
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Application Information (Continue)
LED Backlight Solution
TS19601 could coordinate with any type of DC-to-DC converter through feedback path to realized LED backlight
module. The number of LEDs in the string is variable even with certain fixed power source since the output voltage
of the DC-to-DC converter could be modulated according to feedback signal.
AC Voltage Input
TS19601 could work with any kind of well-known or well-developed switch-mode power supply system. Simply cut
off the internal feedback path of the power supply system and then feed the signal from TS19601 back to the
power supply system instead.
5/8
Version: B11
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Thermal Consideration Information
The Maximum Power Dissipation on Current Regulator
PD(MAX) = VOUT(MAX) × IOUT(NOM) + VIN(MAX) × IDD
VOUT(MAX) = the maximum voltage on output pin;
IOUT(NOM)
IDD
= the nominal output current;
= the quiescent current the regulator consumes at IOUT(NOM);
VIN(MAX) = the maximum input voltage.
Thermal Consideration
The TS19601 has internal power and thermal limiting circuitry designed to protect the device under overload
conditions. However, maximum junction temperature ratings should not be exceeded under continuous normal load
conditions. The thermal protection circuit of TS19601 prevents the device from damage due to excessive power
dissipation. When the device junction temperature rises to approximately 150°C, the regulator will be turned off.
When power consumption is over about 1000mW (TO-252 package, at TA=70°C), additional heat sink is required to
control the junction temperature below 125°C.
The junction temperature is:
TJ = PD (θJT +θCS +θSA ) + TA
PD : Dissipated power.
θJT: Thermal resistance from the junction to the mounting tab of the package.
For TO-252 package, θJT = 7.0°C/W.
θCS: Thermal resistance through the interface between the IC and the surface on which it is mounted.
θSA: Thermal resistance from the mounting surface to ambient (thermal resistance of the heat sink).
(typically, θCS < 1.0°C /W)
If PC Board copper is going to be used as a heat sink, below table can be used to determine the appropriate size of
copper foil required. For multi-layered PCB, these layers can also be used as a heat sink. They can be connected
with
several through-hole vias.
PCB θJA ºC/W
PCB heat sink size
59
500
45
1000
38
1500
6/8
33
2000
27
3000
24
4000
21
5000
Version: B11
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
TO-252-5L Mechanical Drawing
DIM
A
B
C
D
E
F
G
H
I
J
TO-252-5L DIMENSION
MILLIMETERS
INCHES
MIN
MAX
MIN
MAX.
6.350
6.730
0.250
0.265
9.080
10.440
0.357
0.411
0.460
0.640
0.018
0.025
1.27BSC
0.05BSC
2.19
2.380
0.086
0.094
0.460
0.570
0.018
0.022
1.400
1.780
0.055
0.070
0.460
0.570
0.018
0.022
5.34
5.550
0.210
0.219
1.520
2.030
0.060
0.080
Marking Diagram
Y
M
L
= Year Code
= Month Code
(A=Jan, B=Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep,
J=Oct, K=Nov, L=Dec)
= Lot Code
7/8
Version: B11
TS19601
700mA High Voltage Adjustable Current Regulator
With Enable Control
Notice
Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf,
assumes no responsibility or liability for any errors or inaccuracies.
Information contained herein is intended to provide a product description only. No license, express or implied, to
any intellectual property rights is granted by this document. Except as provided in TSC’s terms and conditions of
sale for such products, TSC assumes no liability whatsoever, and disclaims any express or implied warranty,
relating to sale and/or use of TSC products including liability or warranties relating to fitness for a particular
purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications.
Customers using or selling these products for use in such applications do so at their own risk and agree to fully
indemnify TSC for any damages resulting from such improper use or sale.
8/8
Version: B11
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