General Description
The AOZ5166QI 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 (HS) MOSFET has
low capacitance and gate charge for fast switching with
low duty cycle operation. The Low-Side (LS) MOSFET
has ultra low RDS(ON) to minimize conduction losses.
The AOZ5166QI is intended for use with 5V (CMOS) and
Tri-state input compatibility by using both the PWM and
DISB# inputs for accurate control of the power
MOSFET’s switching activities.
A number of features are provided making the
AOZ5166QI a highly versatile power module. The boot
supply diode is integrated in the driver. The LS MOSFET
can be driven into diode emulation mode to provide
asynchronous operation when required. The pinout is
optimized for low parasitics, keeping their effects to the
minimum.

Features
 Fully complies with Intel DrMOS Rev 4.0 specifications
 4.5V to 18V input voltage range
 4.5V to 5.5V driver supply range
 Up to 60A output current
 Up to 1MHz PWM operation
 5V PWM / Tri-state input compatible
 Under-voltage lockout protection
 Single pin control for diode
 Emulation / CCM operation
 6mm x 6mm QFN-40L package

Applications
 Servers
 VRMs for Motherboards
 Point-of-Load DC/DC Converters
 Memory and Graphic Cards
 Video Gaming Consoles