Description

The FAN4860 is a low-power boost regulator designed to provide a regulated 3.3 V, 5.0 V or 5.4 V output from a single cell Lithium or Li-Ion battery. Output voltage options are fixed at 3.3 V, 5.0 V, or 5.4 V with a guaranteed maximum load current of 200 mA at VIN=2.3 V and 300 mA at VIN=3.3 V. Input current in Shutdown Mode is less than 1 µA, which maximizes battery life.

Features

■ Operates with Few External Components: 1 μH Inductor and 0402 Case Size Input and Output Capacitors

■ Input Voltage Range from 2.3 V to 5.4 V

■ Fixed 3.3 V, 5.0 V, or 5.4 V Output Voltage Options

■ Maximum Load Current >150 mA at VIN=2.3 V

■ Maximum Load Current 300 mA at VIN=3.3 V, VOUT=5.4 V

■ Maximum Load Current 300 mA at VIN=3.3 V, VOUT=5.0 V

■ Maximum Load Current 300 mA at VIN=2.7 V, VOUT=3.3 V

■ Up to 92 Efficient

■ Low Operating Quiescent Current

■ True Load Disconnect During Shutdown

■ Variable On-time Pulse Frequency Modulation (PFM) with Light-Load Power-Saving Mode

■ Internal Synchronous Rectifier (No External Diode Needed)

■ Thermal Shutdown and Overload Protection

■ 6-Pin 2 x 2 mm UMLP

■ 6-Bump WLCSP, 0.4 mm Pitch

Applications

■ USB “On the Go” 5 V Supply

■ 5 V Supply – HDMI, H-Bridge Motor Drivers

■ Powering 3.3 V Core Rails

■ PDAs, Portable Media Players

■ Cell Phones, Smart Phones, Portable Instruments