General Description

The APW7080 is a 4A, a synchronous, 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.

特性 Features

? Wide Input V oltage from 4.5V to 26V

? Output Current up to 4A

? Adjustable Output V oltage from 0.8V to 90VIN

- 0.8V Reference V oltage

- –2.5 System Accuracy

? 80mW Integrated P-Channel Power MOSFET

? High Efficiency up to 91

- Pul se-Ski ppi ng Mode ( PSM) / PWM Mode Operat i on

? 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 Undervoltage Protection

? Over-T emperature 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