General Description

The AOZ5616QI 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 AOZ5616QI uses PWM input for accurate control of

the power MOSFETs switching activities, is compatible

with 5V logic and supports Tri-State PWM.

A number of features are provided which make the

AOZ5616QI 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 25V power supply range

 4.5V to 5.5V driver supply range

 55A continuous output current

- Up to 80A with 10ms on pulse

- Up to 120A with 10us on pulse

 Up to 2MHz switching operation

 5V PWM / Tri-State input compatible

 Under-voltage lockout protection

 SMOD# control for diode emulation / CCM operation

 Standard 5mm x 5mm QFN-31L package

Applications

 Memory and graphics cards

 VRMs for motherboards

 Point of load DC/DC converters

 Video gaming consoles