Datasheet > AOZ1231QI-01

AOZ1231QI-01

更新时间： 2024-11-14 12:48:51

品牌	Logo	应用领域
美国万代 - AOS		稳压器
页数	文件大小	规格书
17页	922K
描述
28V/4A Synchronous EZBuckTM Regulator

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AOZ1231QI-01 数据手册

AOZ1231-01

28V/4A Synchronous EZBuck^TMRegulator

General Description

Features

The AOZ1231-01 is high-efficiency, easy-to-use DC/DC

synchronous buck regulator that operates up to 28V.

The device is capable of supplying 4A of continuous

output current with an output voltage adjustable down to

0.8V (±1.0%).



Wide input voltage range:

– 4.5V to 28V (internal V

)

– 2.7V to 28V (external V

)



4A continuous output current

Output voltage adjustable to 0.8V (±1.0%)

The AOZ1231-01 integrates an internal linear regulator

Low R

internal NFETs

DS(ON)

to generate 5.3V V from the input source. If the input

voltage is lower than 5.3V, the linear regulator operates

– 40m high-side

in low drop-output mode and the V voltage is equal to

– 25m low-side

input voltage minus the drop-output voltage of the

internal linear regulator.



Constant On-time with input feed-forward

Programmable frequency up to 1MHz

Internal 5.3V, 20mA linear regulator

Ceramic capacitor stable

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 set up to 1MHz.

Adjustable soft start

Power Good output

Over voltage protection

The devices feature multiple protection functions such

Integrated bootstrap diode

Cycle-by-cycle current limit

Short-circuit protection

as V under-voltage lockout, cycle-by-current limit,

output over-voltage protection, short-circuit protection,

and thermal shutdown.

Thermal shutdown

The AOZ1231-01 is available in a 5mm × 5mm

QFN-30L package and is rated over a -40°C to +85°C

ambient temperature range.

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

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

Rev. 1.1 June 2012

www.aosmd.com

Page 1 of 17

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