synchronous buck power stage module AOS AOZ5239QI with integrated driver and low capacitance MOSFETs
Product Overview
The AOZ5239QI is a high-efficiency synchronous buck power stage module, integrating two asymmetrical MOSFETs and a driver for optimal synchronous buck configuration. It features individually optimized MOSFETs for low capacitance, fast switching, and minimal conduction loss. The module is housed in a compact 5x5 QFN package designed to minimize parasitic inductance and EMI. It supports 3.3V and 5V PWM logic with mid-state compatibility via PWM and/or SMOD# control. The integrated bootstrap diode and pulse skip mode for power saving at light loads are key features. Applications include desktop computers, notebook computers, graphic cards, and video gaming consoles.
Product Attributes
- Brand: AOS (Alpha and Omega Semiconductor)
- Product Family: DrMOS Power Module
- Certifications: RoHS
- Compliance: AOS Green Products (reduced levels of Halogens)
- Package Type: QFN5x5_31L
Technical Specifications
| Specification | Value |
|---|---|
| Power Supply Range (VIN) | 4.5V to 25V |
| Driver Supply Range (VCC, PVCC) | 4.5V to 5.5V |
| Peak Output Current | Up to 70A |
| Continuous Current | Up to 50A |
| Switching Frequency | Up to 2MHz |
| Integrated Bootstrap Diode | Yes (Schottky) |
| Light Load Efficiency Feature | Pulse Skip Mode |
| Intel Power State Support | State 4 |
| Thermal Warning Output | Yes |
| Thermal Shutdown | Yes |
| PWM Input Compatibility | Tri-state |
| Under-Voltage Lockout Protection | Yes |
| Package Dimensions | 5x5 QFN-31L |
| Ambient Temperature Range | -40C to +85C |
| VCC UVLO Rising Threshold | 2.9V (Typ.) |
| VCC UVLO Hysteresis | 410mV (Typ.) |
| PWM Input High Threshold (VPWMH) | 2.65V (Typ.) |
| PWM Input Low Threshold (VPWML) | 0.7V (Typ.) |
| SMOD# Input High Voltage (VSMOD#_HI) | 2.65V |
| SMOD# Input Low Voltage (VSMOD#_LO) | 0.7V |
| Thermal Warning Temperature (TTHWN) | 150C |
| Thermal Shutdown Temperature (TTHDN) | 180C |
2411272356_AOS-AOZ5239QI_C7076772.pdf
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