General Description

The APW7089 is a 4A, asynchronous, step-down converter with integrated 80mW P-channel MOSFET. The device, with current-mode control scheme, can convert 4.5~26V input voltage to the output voltage adjustable from 0.8 to 90% VIN to provide excellent output voltage regulation.

Features

· Wide Input Voltage from 4.5V to 26V

· Output Current up to 4A

· Adjustable Output Voltage from 0.8V to 90% VIN

- 0.8V Reference Voltage

- ±2.5% System Accuracy

· 80mW Integrated P-Channel Power MOSFET

· High Efficiency up to 91%

- Pulse-Skipping Mode (PSM) / PWM Mode Operation

· Current-Mode Operation

- Stable with Ceramic Output Capacitors

- Fast Transient Response

· Power-On-Reset Monitoring

· Fixed 380kHz Switching Frequency in PWM Mode

· Built-in Digital Soft-Start

· Output Current-Limit Protection with Frequency Foldback

· 70% Under-Voltage Protection

· Over-Temperature Protection

· <5mA Quiescent Current During Shutdown

· Thermal-Enhanced SOP-8P Package

· Lead Free and Green Devices Available (RoHS Compliant)

Applications

· LCD Monitor / TV

· Set-Top Box

· Portable DVD

· Wireless LAN

· ADSL, Switch HUB

· Notebook Computer

· Step-Down Converters Requiring High Efficiency and 4A Output Current