AP7168

1.2A LOW DROPOUT REGULATOR WITH POK

AP7168 Rev. 1

1 of 11

NOVEMBER 2009

www.diodes.com

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Wide input voltage range: 2.2V – 5.5V

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230mV very low dropout at 500mA load

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500mV very low dropout at 1A load

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Adjustable output voltage range: 0.8V to 5.0V

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Very fast transient response

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High PSRR

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Accurate voltage regulation

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Current limiting and short circuit protection

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Thermal shutdown protection

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Stable with any type output capacitor

≥ 4.7µF

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Ambient temperature range -40ºC to 85°C

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SOP-8L-EP: Available in “Green” Molding Compound

(No Br, Sb)

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Lead Free Finish/ RoHS Compliant (Note 1)

The AP7168 is a 1.2A, adjustable output voltage, ultra-low

dropout linear regulator. The device includes pass element, error

amplifier, band-gap reference, current limit and thermal shutdown

circuitry. The device is turned on when EN pin is set to logic high

level. A Power-OK (POK) output is available for power sequence

control.

The characteristics of the low dropout voltage and low quiescent

current make it suitable for low to medium power applications, for

example, laptop computers, audio and video applications, and

battery powered devices. The typical quiescent current is

approximately 125µA.

Built-in current-limit and thermal-shutdown functions prevent

IC from damage in fault conditions. The AP7168 is available in

SOP-8L-EP package.

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Servers and laptops

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Smart phone and PDA

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MP3/MP4

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Bluetooth headset

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Low and medium power applications

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FPGA and DSP core or I/O power

Typical Application Circuit

1µF

IN

GND

EN

OUT

Enable

FB

10µF

POK

100kOhm

AP7168

⎟⎟

⎠

⎞

⎜⎜

⎝

⎛

+

=

2

1

REF

OUT

R

R

1

V

V

Features

Description

Applications