aoz1232-01 Alpha & Omega Semiconductor, aoz1232-01 Datasheet

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aoz1232-01

Manufacturer Part Number

aoz1232-01

Description

28v/6a Synchronous Ezbucktm Regulator

Manufacturer

Alpha & Omega Semiconductor

Datasheet

1.AOZ1232-01.pdf (18 pages)

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General Description

The AOZ1232-01 is a high-efficiency, easy-to-use DC/DC

synchronous buck regulator that operates up to 28V.

The device is capable of supplying 6A of continuous

output current with an output voltage adjustable down to

0.8V (±1.0%).

The AOZ1232-01 integrates an internal linear regulator

to generate 5.3V V

than 5.3V, the linear regulator operates at low drop-

output mode and the V

voltage minus the drop-output voltage of the internal

linear regulator.

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 switching frequency

can be externally programmed up to 1MHz.

The device features multiple protection functions such as

V

over-voltage protection, short-circuit protection, and

thermal shutdown.

The AOZ1232-01 is available in a 5mm x 5mm QFN-30L

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

temperature range.

CC

Rev. 1.0 October 2011

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

CC

from input. If input voltage is lower

CC

voltage is equal to input

www.aosmd.com

Features

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Applications

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Wide input voltage range

–

6A continuous output current

Output voltage adjustable down to 0.8V (±1.0%)

Low R

–

–

Constant On-Time with input feed-forward

Programmable frequency up to 1MHz

Internal 5.3V/20mA linear regulator

Ceramic capacitor stable

Adjustable soft start

Power Good output

Integrated bootstrap diode

Cycle-by-cycle current limit

Short-circuit protection

Thermal shutdown

Thermally enhanced 5mm x 5mm QFN-30L package

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

2.7V to 28V

35m high-side

12m low-side SRFET™

28V/6A Synchronous EZBuck

DS(ON)

internal NFETs

AOZ1232-01

TM

Page 1 of 18

Regulator

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