Datasheet
AS1367
150mA, Adaptive Low Drop-Out Linear Regulator
1 General Description
2 Key Features
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Low Dropout Voltage: 110mV @ 150mA load
Operating Input Voltage Range: 2.0V to 5.5V
Output Voltage Range: 1.2V to 5.0V (50mV steps)
Max. Output Current: 150mA
The AS1367 is a precise, low noise, high speed, low
dropout regulator with adaptive operation. Features
included are high ripple rejection and low dropout volt-
age, a reference voltage source, an error amplifier and a
current limiter.
Low Shutdown Current: 100nA
The AS1367 provides high speed operation, low power
consumption and high efficiency by automatically
switching between a light load and a heavy load mode
depending upon the output current level.
High PSRR: 60dB @ 10kHz
Integrated Overtemperature/Overcurrent Protection
Under-Voltage Lockout Feature
The EN function enables the output to be turned off,
while the electric charge at the output capacitor is
discharged via the internal auto-discharge resistance,
and as a result the VOUT pin quickly returns to the GND
level.
Chip Enable Input
Power-OK
Low Quiescent Current: 10µA
Low Output Noise: 15µV @ 100kHz Bandwidth
Operating Temperature Range: -40°C to +85°C
8-pin TDFN 2x2 Package
Furthermore a Bypass Pin is included to reduce noise.
The device features integrate short-circuit and over
current protection. Under-Voltage lockout prevents
erratic operation when the input voltage is slowly
decaying. Thermal Protection shuts down the device
when die temperature reaches 160°C. This is a useful
protection when the device is under sustained short
circuit conditions.
3 Applications
The AS1367 is ideal for cellular phones, cordless
phones, wireless communication equipment, portable
games, cameras, video recorders, portable audio-video
equipment and personal digital assistants.
The device is available in a 8-pin TDFN 2x2 package.
Figure 1. AS1367 - Typical Application Diagram
Input
Output
2V to 5.5V
IN
1.2V to 5.0V
OUT
C
C
IN
OUT
AS1367
R
1µF
3.3µF
PU
100kΩ
IN
POK
C
BYP
10nF
ON /
OFF
BYP
EN
GND
SET
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Revision 1.02
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