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.

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