Description

The FAN5631/FAN5632 is an advanced, third generation switched capacitor step-down DC/DC converter utilizing Fairchilds proprietary ScalarPump technology. This innovative architecture utilizes scalar switch re-configuration and fractional switching techniques to produce low output ripple, lower ESR spikes, and improve efficiency over a wide load range.

Features

■ 90 Peak Efficiency

■ Low EMI

■ Low Ripple

■ Selectable Output Voltage:1.2V/1.5V for FAN5631

■ Efficiency Optimizer Feature for FAN5632

■ Input Voltage Range: 2.2V to 5.5V

■ Output Current: Up to 250mA

■ ±5 Output Voltage Accuracy

■ 30µA Operating Current

■ ICC<1mA in Shutdown Mode

■ 1.5MHz Operating Frequency

■ Shutdown Isolates Output from Input

■ Soft-Start Limits Inrush Current

■ Short-Circuit and Over-Temperature Protection

■ Minimum External Component Count

■ 10-Lead 3x3mm MLP Package

Applications

■ Cell Phones

■ Handheld Computers

■ Portable Electronic Equipment

■ Core Supply to Next-Generation Processors

■ Low-Voltage DC Bus

■ Digital Cameras

■ DSP Supplies