Datasheet
AS1375
1µA Quiescent Current, 200mA LDO
1 General Description
The AS1375 low-power, positive voltage regulator is
designed to deliver up to 200mA, while consuming only
1µA (typ.) of quiescent current. The device is available
in fixed output voltages between 1.2V and 5.0V
(programmable in 50mV steps). The input voltage
ranges from 2V to 5.5V. Operation with large input to
output differential voltages is limited by the maximum
power dissipation available from package and
environment.
The very-low dropout voltage prolongs battery life and
allows high current in small applications when operated
with minimum input-to-output voltage differentials. The
device features very stable output voltage, strict output
voltage regulation tolerances (±1%), and excellent line-
and load-regulation.
2 Key Features
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Input Voltage: 2V to 5.5V
Output Voltage Range: 1.2V to 5.0V (50mV steps)
Max. Output Current: 200mA
Very Low Quiescent Current: 1µA
Output Voltage Accuracy: ±1%
Low Shutdown Current: 10nA (typ.)
Under-Voltage Lockout Feature
Enable Input
Integrated Overtemperature/Overcurrent Protection
The device features integrated 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.
The AS1375 is available in an 6-pin TDFN 2x2mm
package and is qualified for -40°C to +85°C operation.
Figure 1. AS1375 - Typical Application Diagram
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Minimal External Components Required
6-pin TDFN 2x2mm Package
Operating Temperature Range: -40°C to +85°C
3 Applications
The device is perfectly suited for wireless handsets,
smartphones, PDAs, MP3 players, and other battery-
operated handheld devices, where the regulators have
to be always on.
Input
2V to 5.5V
Output
1.2V to 5V
C
OUT
1µF
C
IN
1
µ
F
IN
OUT
ON /
OFF
AS1375
EN
GND
Revision 1.02
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Low Dropout Voltage: 120mV @ 200mA load
AMSCO [ AUSTRIAMICROSYSTEMS AG ]
