General Description
The AOZ52371QI is a general-purpose Smart Power Stage
(SPS) for computing notebook CPU power, consisting of two
asymmetrical MOSFETs and an integrated driver for high
current, high frequency, and DC-DC converter.
The AOZ52371QI provides an output current signal
(IMON). The IMON signal can be directly used to replace
inductor DCR sensing or resistor sensing in the multiphase
voltage regulator systems without the need for temperature
compensation.
The AOZ52371QI also includes an accurate module thermal
monitor (TMON). TMON is a voltage sourced PTAT signal
with a gain of 8 mV/°C.
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 standard 5 mm × 5 mm QFN package
is optimally designed to minimize parasitic inductance for
minimal EMI signature.

Features
• 4.5 V to 25 V power supply range
• 60 A continuous output current
- Up to 80 A for 10 ms on pulse
- Up to 120 A for 10 μs on pulse
• Optimized for switching frequency up to 1 MHz
• Integrated current monitor output signal
• Integrated temperature monitor output signal
• Fault Indicator
• VCC33 and PVCC5 Under-Voltage Lockout (UVLO)
• Zero Current Detect Function
• Over Temperature Protection
• Standard 5 mm x 5 mm QFN-30L package

Applications
• Notebook computer
• Graphic card
• Communications Infrastructure