BL9118
800mA Adjustable Voltage High Speed LDO Regulators BL9118 Series
General Description
The BL9118 series are highly accurate, low noise,
LDO Voltage Regulators that are capable of
providing an output current that is in excess of
800mA with a maximum dropout voltage of 1.0V at
800mA（BL9118-1.8V）.This series contains three
fixed output voltages of 1.2V,1.8 V and 2.5V that
have no minimum load requirement to maintain
regulation. On chip trimming adjusts the
reference/output voltage to within ±2% accuracy.
Internal protection features consist of output
current limiting, safe operating area compensation,
and thermal shutdown. The BL9118series can
operate with up to 15 V input. Devices are available
in SOT223.
Features
Output Current in Excess of 800mA
Dropout Voltage:115mV@ I
OUT
=100mA
（BL9118-1.8V）
Operating Voltage Range: 2.5V½15V
Highly Accuracy: ±2％
Adjustable Output Voltage Option
Standby Current: 52uA（TYP.）
High Ripple Rejection: 70dB@1KHz（BL9118-1.8V）
Line Regulation: 2mV（TYP.）
Temperature Stability≤0.5%
Thermal Shutdown Protection：160℃
Packages:SOT223
Typical Application
Consumer and Industrial Equipment Point of
Regulation
Switching Power Supply Post Regulation
Hard Drive Controllers
Battery Chargers
Package:
F: SOT-223-3
Selection Guide
BL9118-VVV X X XX
Typical Application Circuit
Features:
P: Standard (default, lead free)
C: Customized
Output Voltage Accuracy
A: ±1%
B: ±2%
Output Voltage
120:1.2V 180:1.8V
250:2.5V
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BL9118
I
OUT
=100mA,1kHZ
Ripple Rejection Rate
PSRR
V
IN
=5.5V
+1Vp-pAC
I
OUT
=200mA,1kHZ
I
OUT
=500mA,1kHZ
70
68
61
dB
Note
：
1. V
OUT
(T)
：Specified
Output Voltage
2.V
OUT
(E)
：Effective
Output Voltage ( ie. The output voltage when “V
OUT
(T)+1.2V”is provided at the Vin pin while
maintaining a certain Iout value.)
3.V
DIF
：V
IN1
–V
OUT
(E)’
V
IN1
：The
input voltage when V
OUT
(E)’ appears as input voltage is gradually decreased.
V
OUT
(E)’=A voltage equal to 98% of the output voltage whenever an amply stabilized Iout and {V
OUT
(T)+1.2V} is input.
Type Characteristics
（1）
Output Voltage VS. Output Current
BL9118-1.2V（VIN=V
OUT
+1.3V）
Output Voltage VS.Output Current
1.23
O u tp u t V o lta g e (V )
1.21
1.20
1.19
1.18
1.17
1.16
0
200
400
600
800
1000
O utput V olta ge (V )
1.85
1.83
1.81
1.79
1.77
1.75
1.73
1.71
0
200
400
600
800
1000
BL9118-1.8V（VIN=V
OUT
+1.2V）
Output Voltage VS.Output Current
1.22
Output Current(mA)
Output Current(mA)
BL9118-2.5V（VIN=V
OUT
+1.2V）
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