General Description

The AOZ2264VQI 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 16A of continuous output current with an

output voltage adjustment from 0V to 1.8V 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 AOZ2264VQI is available in a 4mm×4mm QFN-23L

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

temperature range.

特性 Features

? Wide input voltage range:

– 4V to 28V

? Support Intel ITDC up to 16A

? Support Intel ICCMAX up to 32A

? 2 bits programmable output voltage adjustable from 0V

to 1.8V

? Integrated high performance trench MOSFETs

capable of:

– High peak current

– Up to 47A with 10ms on pulse

– Up to 70A with 10μs on pulse

– High efficiency

– 11m? high-side

– 4m? low-side

? Constant On-Time with input feed-forward

? Ripple Reduction at light load

? Remote sense

? 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 23-pin 4m×4m QFN

Applications

? Portable computers

? Compact desktop PCs

? Servers

? Networking equipment