AOZ1270AQI集成電路（IC）的穩(wěn)壓器-DC-DC開關(guān)穩(wěn)壓器規(guī)格書PDF中文資料

General Description

The AOZ1270AQI is a high-efficiency, easy-to-use DC/DC

synchronous buck regulator that operates up to 28 V. The

device is capable of supplying 15 A of continuous output

current with an output voltage adjustable down to 0.6 V ±1.

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 on-time can be externally

programmed up to 3.5 μS.

The device features 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 AOZ1270AQI is available in a 4 mm × 4 mm QFN-

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

temperature range.

Features

? Wide input voltage range

- 6.5 V to 28 V

? 15 A continuous output current

? Output voltage adjustable down to 0.6 V (±1.0)

? Low RDS(ON) internal NFETs

- 11 mΩ high-side

- 4.5 mΩ low-side

? Constant On-Time with input feed-forward

? Programmable on-time up to 3.5 μs

? Selectable PFM light-load operation

? Ceramic capacitor stable

? Adjustable soft start

? Ripple reduction

? Power Good output

? Integrated bootstrap diode

? Cycle-by-cycle current limit

? Short-circuit protection

? Over voltage protection

? Thermal shutdown

? Thermally enhanced 4 mm x 4 mm QFN-22L 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