AS1375

1µA Quiescent Current, 200mA LDO

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Data sheet

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.

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.

2 Key Features

!

Input Voltage: 2V to 5.5V

!

Low Dropout Voltage: 120mV @ 200mA load

!

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.)

!

Integrated Overtemperature/Overcurrent Protection

!

Under-Voltage Lockout Feature

!

Enable Input

!

Minimal External Components Required

!

Operating Temperature Range: -40°C to +85°C

!

6-pin TDFN 2x2mm Package

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.

Figure 1. AS1375 - Typical Application Diagram

Input

2V to 5.5V

1

ON /

OFF

1µF

Output

1.2V to 5V

IN

EN

GND

OUT

AS1375