Description
The FAN48610 is a low-power boost regulator designed to provide a minimum voltage-regulated rail from a standard single-cell Li-Ion battery and advanced battery chemistries. Even below the minimum system battery voltage, the device maintains the output voltage regulation for a minimum output load current of 1.0 A. The combination of built-in power transistors, synchronous rectification, and low supply current suit the FAN48610 for battery-powered applications.
The FAN48610 is available in a 9-bump, 0.4 mm pitch, Wafer-Level Chip-Scale Package (WLCSP).

Features
■ Input Voltage Range: 2.35 V to 5.50 V
■ Output Voltages Range: 3.0 V to 5.0 V
■ IOUT ≥ 1 A at VOUT =5.0 V, VIN ≥ 2.5 V
■ IOUT ≥ 1.5 A at VOUT =5.0 V, VIN ≥ 3.0 V
■ Up to 94% Efficient
■ Automatic Pass-Through Operation when VIN > VOUT
■ Internal Synchronous Rectification
■ Soft-Start with True Load Disconnect
■ Short-Circuit Protection
■ 9-Bump, 1.215 mm x 1.215 mm, 0.4 mm Pitch WLCSP
■ Three External Components: 2016 0.47 µH Inductor, 0603 Case Size Input / Output Capacitors
■ Total Application Board Solution Size: < 11 mm2

Applications
■ Class-D Audio Amplifier and USB OTG Supply
■ Boost for Low-Voltage Li-Ion Batteries
■ Smart Phones, Tablets, Portable Devices