APW7143中文資料茂達電子數(shù)據(jù)手冊PDF規(guī)格書

General Description

The APW7143 is a 3A asynchronous Buck converter with an integrated 70mW P-channel power MOSFET. The APW7143, designed with a current-mode control scheme, can convert wide input voltage of 4.3V to 14V to the output voltage adjustable from 0.8V to VIN to provide excellent output voltage regulation.

Features

? Wide Input Voltage from 4.3V to 14V

? Output Current up to 3A

? Adjustable Output Voltage from 0.8V to VIN

- ±2 System Accuracy

? 70mW Integrated Power MOSFET

? High Efficiency up to 92

- Automatic Skip/PWM Mode Operation

? Current-Mode Operation

- Easy Feedback Compensation

- Stable with Low ESR Output Capacitors

- Fast Load/Line Transient Response

? Power-On-Reset Monitoring

? Fixed 500kHz Switching Frequency in PWM mode

? Built-in Digital Soft-Start

? Current-Limit Protection with FrequencyFoldback

? Hiccup-Mode 50 Undervoltage Protection

? Over-Temperature Protection

? <3mA Quiescent Current in Shutdown Mode

? Small SOP-8 Package

? Lead Free and Green Devices Available (RoHS Compliant)

Applications

? OLPC, UMPC

? Notebook Computer

? Handheld Portable Device

? Step-down Converters Requiring High Efficiency and 3A Output Current