AS1364

1A Low Dropout Linear Voltage Regulator

Datasheet

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Revision 1.8

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1 General Description

The AS1364 is a low-dropout linear regulator (LDO) designed to

operate from 2V to 5.5V input, that delivers a wide range of highly

accurate (±0.75%) factory-trimmed output voltages as well as

adjustable output voltages (using an external resistor-divider

network).

The ultra-low dropout device requires only 140mV dropout voltage

while delivering a guaranteed 1A load current and is therefore

perfectly suited for battery-operated portable applications.

The device features an internal PMOS pass transistor (for a low

supply current of only 35µA), reset output, a low-power shutdown

mode, and protection from short-circuit and thermal-overload

conditions.

When in shutdown, a 5k

 (typ) discharge path is connected

between the output pin and ground. The AS1364 is available in a

8-pin TDFN 3x3mm package.

2 Key Features



Guaranteed Output Current: 1A



Low Dropout: 140mV @ 1A



Output Voltage Accuracy: Up to ±0.75%



2.0V to 5.5V Input Voltage







Low Ground Current: 35µA



Low Shutdown Current: 10nA





Thermal Overload Protection



Output Current Limit



Output discharge path during shutdown



8-pin TDFN 3x3mm Package

3 Applications

The device is ideal for laptops, PDAs, portable audio devices, mobile

phones, cordless phones, and any other battery-operated portable

device.

Table 1. Standard Products

Model

Output Type

BYP

SET

AS1364-AD

Adjustable

No

Yes

AS1364-_ _

Fixed

Yes

No

AS1364

4.7µF

3

IN

6

OUT

2

EN

1

POK

4.7µF

Reset Output

On

Off

4

IN

7

SET/BYP

5

OUT

10nF

8

GND

Figure 1. AS1364 - Typical Application Diagram