AS1364

1A, Low-Dropout Linear Vo ltage Regulator

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Revision 1.05

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Datasheet

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 drop-

out voltage while delivering a guaranteed 1A load cur-

rent and is therefore perfectly suited for battery-operated

portable applications.

voltage noise.

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.

The AS1364 is available in an 8-pin TDFN 3x3mm pack-

age.

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

!

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

Figure 1. AS1364 - Typical Application Diagram

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