FAN4860

FAN4860 — 3MHz, 5V Output Synchronous TinyBoost™ Regulator April 2010 FAN4860 3MHz, 5V Output Synchronous TinyBoost™ Regulator Features ƒ Operates with Very Small External Components: 1μH Inductor and 0402 Case Size Input and Output Capacitors ƒ Input Voltage Range from 2.3V to 4.5V ƒ Fixed 5.0V Output Voltage ƒ Maximum Load Current 200mA at VIN=2.3V ƒ Maximum Load Current 300mA at VIN=3.3V ƒ Up to 92% Efficient ƒ Low Operating Quiescent Current ƒ True Load Disconnect During Shutdown ƒ Variable On-time Pulse Frequency Modulation (PFM) with Light-Load Power-Saving Mode ƒ Internal Synchronous Rectifier (No External Diode Needed) ƒ Thermal Shutdown and Overload Protection ƒ 6-Pin 2 x 2mm UMLP ƒ 6-Bump WLCSP, 0.4mm Pitch Applications ƒ USB “On the Go” 5V Supply ƒ HDMI 5V Supply ƒ 5V Supply for H-Bridge Motor Drivers ƒ Powering 5V Peripherals ƒ Supply Source for WLED Torch and Flash Lighting ƒ PDAs, Portable Media Players ƒ Cell Phones, Smart Phones, Portable Instruments Description The FAN4860 is a low-power boost regulator designed to provide a regulated 5V output from a single cell Li-Ion battery. The output voltage is fixed at 5.0V with a guaranteed maximum load current of 200mA at VIN=2.3V and 300mA at VIN=3.3V. Input current in shut-down mode is less than 1µA, which maximizes battery life. Light-load PFM operation is automatic and “glitch-free”. The regulator maintains output regulation at no-load with 37µA quiescent current. The combination of built-in power transistors...