BL8566
BL8566
REV1.1-Revised Jul 2009
Dual 300mA High PSRR Linear Regulator
DESCRIPTION
FEATURES
BL8566 dual, low-noise, low-dropout regulator
delivers at least 300mA of continuous output
current. The output voltage for each regulator
is set independently by trimming. Output
voltages are selectable in 100mV steps within
a range of 1.2V to 3.5V.Typical output noise is
47uVrms, and PSRR is 73dB at 100Hz. The
BL8566 includes two independent logiccontrolled shutdown inputs and allows the
output of each regulator to be turned of
independently.
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BL8566 includes high accuracy voltage
reference, error amplifier, current limit circuit
and output driver module.
Two low dropout voltage regulators
300mA output current for each LDO
25uA operating supply current per LDO
Low 47uVRMS output noise
Standby Mode: 0.1uA
Low 160mV dropout at 300mA load
73dB PSRR at 100Hz
Excellent Line regulation: 0.05%/V
Independent Shutdown controls
1.2V to 3.5V Factory-Preset Output
Output Current Limit
Highly Accurate: ±2% (±1% customized)
APPLICATIONS
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BL8566 has excellent load and line transient
response
and
good
temperature
characteristics, which can assure the stability
of chip and power system. And it uses
trimming technique to guarantee output
voltage accuracy within±2%.
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Cellular phones
Cordless phones and radio
communication equipment
Battery Powered equipment
Notebook and hand-hold equipment
Wireless LAN
GPS receivers
BL8566 is available in SOT-23-6 package
which is lead(Pb)-free
TYPICAL APPLICATION
ELECTRICAL CHARACTERISTICS
PSRR
80
70
PSRR(dB)
60
Vout=3.3V
50
40
30
20
APPLICATION HINTS
10
NOTE:
Input capacitor (Cin=1uF) and Output
capacitor (Cout=1uF/3.3uF) are
recommended in all application circuit.
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0
0.01
0.1
1
10
Freq(KHz)
1
100
1000
BL8566
ORDERING INFORMATION
PIN CONFIGURATION
BL8566- □
1 □
2 □
3
Code
Marking
Description
Output Voltage:
B:1.5/2.8V,C:1.5/3.0V…
f:2.8/3.3V ,g:1.3/2.8V
Temperature&Rohs:
P:-40~85°C ,Pb Free Rohs Std
Package type:
R6:SOT-23-6
D6: SOT23-6 D-type Pin Out
1
□
2
□
3
□
LXZZ
LXZZ|
“|” for
D-type
MARKING DESCRIPTON
L: Product Code
Vss
Vin
Vout1
CE1
CE2
Vout2
X: Output Voltage
Code
B
C
D
E
G
H
I
J
a
c
e
g
Vout1
1.5V
1.5V
1.5V
1.5V
1.8V
1.8V
1.8V
1.8V
1.2V
2.8V
2.5V
1.3V
Vout2
2.8V
3.0V
3.3V
4.0V
2.5V
2.8V
3.0V
3.3V
2.5V
1.3V
3.3V
2.8V
Code
M
O
P
Q
R
S
T
U
b
d
f
Vout1
2.8V
2.8V
2.8V
3.0V
3.0V
3.0V
3.3V
3.3V
2.8V
2.5V
2.8V
Vout2
1.8V
2.8V
3.0V
2.5V
3.0V
3.3V
1.8V
3.3V
1.2V
2.8V
3.3V
L: Product
Code
X: Output
Voltage
ZZ: Date
Code
L:Product
Code
X:Output
Voltage
BL8566-XPR6
BL8566-XPD6
ZZ: Date
Code
Ground Pin
Supply Voltage Input
CH1 Output Voltage
Chip Enable1
Chip Enable2
CH2 Output Voltage
ABSOLUTE MAXIMUM RATING
Z: The Year of manufacturing,”7” stands for year
2007,”8” stands for year 2008,and “ 0 ” stands for
year 2010.
Z: The week of manufacturing. ”A” stands for
week 1,”Z” stands for week 26,” A ” stands for
week 27,” Z ” stands for week 52.
Parameter
Value
Max Input Voltage
Operating Junction
Temperature(Tj)
Ambient
Temperature(Ta)
Power
SOT-23-6
Dissipation
Storage
Temperature(Ts)
Lead Temperature &
Time
8V
125°C
-40°C -85°C
250mW
-40°C -150°C
260°C,10S
Note:
Exceed these limits to damage to the device.
Exposure to absolute maximum rating
conditions may affect device reliability.
RECOMMENDED WORK
CONDITIONS
Parameter
Input Voltage Range
Ambient Temperature
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2
Value
Max. 6V
-40°C –85°C
BL8566
ELECTRICAL CHARACTERISTICS
(Test Conditions: Cin=1uF,Cout=3.3uF,TA=25°C, unless otherwise specified. )
BL8566, For Arbitrary Output Voltage
Symbol
Parameter
Vin
Input Voltage
Conditions
Min
Typ
Vout1
Vout
Output Voltage
Vin=Set Vout+1V
1mA≤Iout≤30mA
Vout
x0.98
Iout (Max.)
Maximun Output
Current
Vin-Vout=1V
300
Vdrop
Dropout
Voltage,Vout≥2.8V
∆Vout
∆Vin ⋅ Vout
Line Regulation
∆Vout / ∆Iout
Load Regulation
Iss
∆Vout
∆T ⋅ Vout
Supply Current
Supply Current
(Standby)
Output Voltage
Temperature
Coefficiency
PSRR
Ripple Rejection
Ilim
Vceh
Vcel
en
Short Current Limit
CE Input Voltage “H”
CE Input Voltage “L”
Output Noise
Istandby
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Max
6
Vout
X1.02
Units
V
V
mA
Iout=100mA
50
80
mV
Iout=300mA
160
220
mV
Iout=40mA
2.8V≤Vin≤6V
0.05
0.2
%/V
30
50
mV
50
100
uA
0.1
1.0
uA
Vin=Set Vout+1V
1mA≤Iout≤300mA
Vin=Set Vout+1V
Vin=Set Vout+1V
Vce=GND
Iout=30mA
F=100Hz,
Ripple=0.5Vp-p
Vin=Set Vout+1V
Vout=0V
±100
ppm/°C
70
dB
500
1.5
0
BW=10Hz~100kHz
3
Vin
0.25
47
mA
V
V
uVrms
BL8566
BLOCK DIAGRAM
Explanation
BL8566 series are highly accurate, dual, low noise, CMOS low dropout voltage regulators.
The output voltage for each regulator is set independently by trimming. Voltages are selectable in
100mV steps within a range of 1.2V to 3.5V. It also can be customized on command.
BL8566 includes high accuracy voltage reference, error amplifier, current limit circuit and output
driver module.
BL8566 has excellent load and line transient response and good temperature characteristics,
which can assure the stability of chip and power system. And it uses trimming technique to
guarantee output voltage accuracy within±2%.
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4
BL8566
TYPICAL PERFORMANCE CHARACTERISTICS
1) Output Voltage vs. Output Current (with
output short protection)
2) Output Voltage vs. Input Voltage
Line Regulation
Current limit Vs. Vout
3.5
3.313
3
3.3125
VOUT(V)
Vout(V)
2.5
2
3.312
3.3115
1.5
3.311
1
3.3105
0.5
3
3.5
4
0
0
200
400
600
800
1000
1200
1400
5
5.5
6
1600
Iload(mA)
Iout=14(mA)
3) Dropout Voltage vs. Output Current
4) Ripple rejection vs. Frequency
PSRR
Dropout & Iout
80
180
160
70
Vout=3.3V
140
60
120
PSRR(dB)
Dropout(mV)
4.5
VIN(V)
100
80
60
50
40
30
40
20
20
10
0
0
50
100
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150 200
Iout(mA)
250
300
0
0.01
350
Vout=3.3V
0.1
1
10
Freq(KHz)
5
100
1000
BL8566
5) Line transient response
Cin=Cout=1uF
Iout=25mA
vout=3.3V
5V
5V
Vin
4V
Vin
Vout
4V
Vout
6) Load transient response
Cin=Cout=1uF Vin=4.5v Vout=3.3V
50mA
50mA
1mA
Output Current
Output Current
1mA
Output Voltage
Output Voltage
7) Start up from EN
8) Shut down from EN
Output
Output
EN
EN
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6
BL8566
PACKAGE LINE
Package
SOT-23-6
Devices per reel
Package dimension:
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7
3000Pcs
Unit
mm
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