AP7335A

300mA, LOW QUIESCENT CURRENT, FAST TRANSIENT

LOW DROPOUT LINEAR REGULATOR

AP7335A

Document number: DS35267 Rev. 2 - 2

1 of 12

www.diodes.com

July 2011

© Diodes Incorporated

Description

The AP7335A is a 300mA, 5.0V fixed output voltage, low

dropout linear regulator with ±1% output voltage accuracy.

The device included pass element, error amplifier, band-gap,

current limit and thermal shutdown circuitry. The device is

turned on when EN pin is set to logic high level.

The characteristics of low dropout voltage and low quiescent

current make it suitable for low power applications, for

example, battery powered devices. The typical quiescent

current is 35

μA. Built-in current-limit and thermal-shutdown

functions prevent IC from damage in fault conditions.

This device is only available as 5.0V fixed version. Please

contact your local sales office for any other voltage options.

The AP7335A is packaged in SOT25 and DFN2020-6.

Applications

•

Smart Phones

•

MP3/MP4

•

Battery-powered devices

•

Bluetooth headset

•

Battery Charger

•

LCD TV

•

Multifunction Monitors

Pin Assignments

Features

•

300mA Low Dropout Regulator with EN

•

•

Fixed output at 5.0V

o

•

High PSRR: 65dB at 1kHz

•

Fast start-up time 220µs

•

Stable with low ESR, 1µF ceramic output capacitor

•

Excellent Load/Line Transient Response

•

Low dropout 150mV at 300mA

•

Current limit and short circuit protection

•

Thermal shutdown protection

•

Ambient temperature range -40ºC to 85°C

•

SOT25, and DFN2020-6 Available in “Green” Molding

Compound (No Br, Sb)

•

Lead Free Finish/ RoHS Compliant (Note 1)

Note:

1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at

http://www.diodes.com/products/lead_free.html

.

Typical Application Circuit

1uF

IN

GND

EN

OUT

Enable

1uF

AP7335

Fixed Output