General Description

The AOZ5612BQI is a high efficiency synchronous buck

power stage module consisting of two asymmetrical

MOSFETs and an integrated driver. The MOSFETs are

individually optimized for operation in the synchronous

buck configuration. The High-Side MOSFET is optimized

to achieve low capacitance and gate charge for fast

switching with low duty cycle operation. The Low-Side

MOSFET has ultra low ON resistance to minimize

conduction loss. The compact 5mm x 5mm QFN

package is optimally chosen and designed to minimize

parasitic inductance for minimal EMI signature.

The AOZ5612BQI uses PWM and/or SMOD# input for

accurate control of the power MOSFETs switching

activities, is compatible with 3V logic and supports Tri-

State PWM.

A number of features are provided making the

AOZ5612BQI a highly versatile power module. The bootstrap

switch is integrated in the driver. The Low-Side

MOSFET can be driven into diode emulation mode to

provide asynchronous operation and improve light-load

performance. The pin-out is also optimized for low

parasitics, keeping their effects to a minimum.

Features

 4.5V to 20V power supply range

 4.5V to 5.5V driver supply range

 60A continuous output current

- Up to 80A with 10ms on pulse

- Up to 120A with 10us on pulse

 Up to 2MHz switching operation

 3V PWM / Tri-State input compatible

 Under-Voltage LockOut protection

 SMOD# control for Diode Emulation / CCM operation

 Low Profile 5x5 QFN-31L package

Applications

 Memory and graphic cards

 VRMs for motherboards

 Point of load DC/DC converters

 Video gaming console