General Description

The AOZ2263VQI-02 is a high-efficiency, easy-to-use

DC/DC synchronous buck regulators capable of

operation from a 4V to 28V input bus. The device is

capable of supplying 12A of continuous output current

with an output voltage adjustable from 0.8V to 1.05V by

controlling VID0 and VID1 signals.

A proprietary constant on-time PWM control with input

feed-forward results in ultra-fast transient response while

maintaining relatively constant switching frequency over

the entire input voltage range.

The devices feature multiple protection functions such as

VCC under-voltage lockout, cycle-by-cycle current limit,

output over-voltage protection, short-circuit protection,

and thermal shutdown.

The AOZ2263VQI-02 is available in a 4mm×4mm QFN-

22L package and is rated over a -40°C to +85°C ambient

temperature range.

特性 Features

? Wide input voltage range:

– 4V to 28V

? 12A continuous output current

? 2 bits programmable output voltage adjustable from

0.8V to 1.05V

? Low RDS(ON) internal NFETs

– 11m? high-side

– 7m? low-side

? Constant On-Time with input feed-forward

? Ripple Reduction at light load

? Remote sense

? Low Power Mode

? Ceramic capacitor stable

? Fixed soft start

? Power Good output

? Integrated bootstrap diode

? Cycle-by-cycle current limit

? Short-circuit protection

? Over voltage protection

? Thermal shutdown

? Thermally enhanced 22-pin 4m×4m QFN

Applications

? Portable computers

? Compact desktop PCs

? Servers

? Graphics cards

? Set top boxes

? LCD TVs

? Cable modems

? Point of load dc/dc converters

? Telecom/Networking/Datacom equipment