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AOS AOZ5508QI 2 Synchronous Buck Power Stage Module with Asymmetrical MOSFETs and Driver Integration

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AOS AOZ5508QI 2 Synchronous Buck Power Stage Module with Asymmetrical MOSFETs and Driver Integration

Description : PowerVFQFN-22 Power Driver Modules RoHS

Mfr. Part # : AOZ5508QI_2

Model Number : AOZ5508QI_2

Package : PowerVFQFN-22

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Product Overview

The AOZ5508QI is a high-efficiency synchronous buck power stage module designed for high-current applications. It integrates two asymmetrical MOSFETs and a driver, optimized for synchronous buck configurations. The module features a low-profile QFN-22L package and supports 5V PWM/Tri-State input, offering features like under-voltage lockout, FCCM control for diode emulation or CCM operation, and optimized pin-out for low parasitics. Its versatility makes it suitable for memory and graphics cards, VRMs for motherboards, point-of-load DC/DC converters, and video gaming consoles.

Product Attributes

Brand: AOS (Alpha and Omega Semiconductor)
Package: QFN3.5x4.5-22L
Environmental: RoHS
Product Line: AOS Green Products (reduced levels of Halogens)

Technical Specifications

Parameter	Rating	Unit
Power Supply Range (VIN)	4.5 to 25	V
Driver Supply Range (VCC, PVCC)	4.5 to 5.5	V
Continuous Output Current	35	A
Instantaneous Current (20ms @ 14V VIN)	Up to 65	A
Instantaneous Current (20ms @ 22V VIN)	Up to 60	A
Instantaneous Current (10s pulse)	Up to 80	A
Switching Frequency	Up to 2	MHz
PWM Input Compatibility	5V / Tri-State	Logic
Junction Temperature Range	-40 to +150	C
Package Dimensions	3.5 x 4.5	mm
VCC UVLO Threshold (Rising)	3.5 (Typ.)	V
VCC UVLO Hysteresis	400 (Typ.)	mV
PWM Logic High Input Voltage (VPWMH)	4.20	V
PWM Logic Low Input Voltage (VPWML)	0.72	V
PWM Tri-State Window (VTRIH/VTRIL)	1.60 / 3.40	V
FCCM Logic High Input Voltage (VFCCM_H)	3.90	V
FCCM Logic Low Input Voltage (VFCCM_L)	1.10	V
FCCM Tri-State Window	2.0 to 3.0	V
LS Minimum On Time (DCM Mode)	350	ns
PWM to HS Gate Delay (tPDLU)	24	ns
PWM to LS Gate Delay (tPDLL)	25	ns
LS to HS Gate Deadtime (tPDHU)	15	ns
HS to LS Gate Deadtime (tPDHL)	13	ns
Tri-State Shutdown Delay (tTSSHD)	150	ns
Tri-State Propagation Delay (tTSEXIT)	45	ns

2411041558_AOS-AOZ5508QI-2_C5587862.pdf

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