BL9103
250mA，Low Power Consumption LDO BL9103 Series
Features
General Description
The BL9103 series are a group of positive voltage
output, three–pin regulator, that provide a high
current even when the input/output Voltage
differerntial is small. Low power consumption and
high accuracy is achieved through CMOS
technology. They allow input voltages as high as
18V.
Ultra low quienscent current: 3.0uA(typ)
High input voltage (up to 18v)
Low dropout voltage :80mV@Iout=40mA
（Vout=3.3v）
Output voltage accuracy： ±2％
Maximum output current：250mA
（within max.power dissipation,Vout=3.3V）
Low temperature coefficient
Package：SOT23-3、TO-92、SOT89-3
Typical Application
Selection Guide
BL9103-XX
X
X
X
Packages：
RM：SOT-23-3
Cameras, video recorders
Voltage regulator for microprocessor
Voltage regulator for LAN cards
Wireless communication equipment
Audio/Video equipment
SM：SOT-89-3
T：TO-92
Typical Application Circuit
Output accucy：
Default，±2％
1：
±1％
（customized）
Temperature range：
P：Standard
（Default、lead free）
C：Standard
（customized）
Output Voltage：
33……3.3V
40……4.0V
45……4.5V
50……5.0V
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BL9103
Pin Configuration
SOT23-3
SOT89-3
TO-92
Pin Description
Pin Number
SOT89-3/TO-92
SOT23-3
1
1
2
3
3
2
Pin Name
Functions
VSS
VIN
VOUT
Ground
Input
Output
Absolute Maximum Ratings
Parameter
Input Voltage
Output Voltage
Output Current
Operating Temperature Range
Storage Temperature Range
SOT89-3
Power Dissipation TO-92
SOT23-3
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Symbol
VIN
VOUT
Iout
TOPR
TSTG
PD
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Ratings
18
Vss-0.3～VIN +0.3
500
-40～＋85
－40～＋125
500
500
300
Units
V
V
mA
℃
℃
mW
BL9103
Block Diagram
Electrical Characteristics
BL9103-33
(VIN= VOUT+1.0V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Symbol
Conditions
VOUT(E)
IOUT=40mA,
(Note 2)
VIN=Vout+1V
Output Voltage
Input Voltage
VIN
Maximum Output Voltage
IOUT _max
∆VOUT
Load Regulation
Dropout Voltage
1mA≤IOUT≤60mA
VOUT (T)
(Note 1)
Max.
Units
X 1.02
V
18
V
250
mA
15
40
mV
IOUT =40mA
80
ISS
VIN=Vout+1V
3
4
μ A
∆VOUT
IOUT =40mA
∆VIN ×VOUT
Vout+1V ≤VIN≤18V
0.1
0.2
%/V
Temperature
VIN=Vout+1V, IOUT =40mA
Coefficient
-40℃<Ta<85℃
Supply Current
△VOUT/△Ta
VIN=Vout+1V,
X 0.98
Typ.
Vdif
(Note 3)
Line Regulations
VIN=Vout+1V
Min.
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±0.7
mV
mV/℃
BL9103
BL9103-40
(VIN= VOUT+1.0V，CIN=CL=10uF，Ta=25OC, unless otherwise noted)
Parameter
Output Voltage
Symbol
Conditions
VOUT(E)
IOUT=40mA,
(Note 2)
VIN=Vout+1V
Input Voltage
VIN
Maximum Output Voltage
IOUT _max
Load Regulation
Dropout Voltage
(Note 3)
∆VOUT
△VOUT/△Ta
VIN=Vout+1V,
1mA≤IOUT≤60mA
X 0.98
Typ.
VOUT (T)
(Note 1)
Max.
Units
X 1.02
V
18
V
250
mA
15
40
mV
Vdif
IOUT =40mA
70
ISS
VIN=Vout+1V
3
4
μ A
∆VOUT
IOUT =40mA
∆VIN ×VOUT
Vout+1V ≤VIN≤18V
0.1
0.2
%/V
Temperature
VIN=Vout+1V, IOUT =40mA
Coefficient
-40℃<Ta<85℃
Supply Current
Line Regulations
VIN=Vout+1V
Min.
±0.7
mV
mV/℃
Note ：
1. VOUT (T) ：Specified Output Voltage
2.VOUT (E) ：Effective Output Voltage ( ie. The output voltage when “VOUT (T)+1.0V”is provided at the Vin pin while
maintaining a certain Iout value.)
3.VDIF：VIN1 –VOUT (E)’
VIN1 ：The input voltage when VOUT(E)’ appears as input voltage is gradually decreased.
VOUT (E)’=A voltage equal to 98% of the output voltage whenever an amply stabilized Iout and {VOUT
(T)+1.0V} is input.
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BL9103
Packaging Information
● SOT23-3
● SOT89-3
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BL9103
● TO-92
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