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