Features

5V Fixed Output Voltage

30mA Maximum Output Current

Built-in Charge Pump with Three Modes of Operation: 1×, 1.5×, and 2×

Minimum External Components

Flying Capacitors Only 0.22μF

Low-noise, Constant-frequency Operation (1.2MHz) at Heavy Loads

High-efficiency, Low-frequency Operation at Light Loads

Low Quiescent Current

Up to 92% Efficiency

2.9V to 5.5V Input Voltage Range

Soft-start for Limiting Inrush Current

Input Under-Voltage Lockout Protection (UVLO)

Short-Circuit Protection (SCP)

Thermal Shutdown Protection (TSD)

8-bump 1.21 x 1.21mm, 0.4mm Pitch WLCSP

Applications

USB I/O Supply Regulators

Cell Phones, Smart-Phones

Pocket PCs

PDA, DSC, PMP, and MP3 Players

Description

The FAN5665 is a 5V switched capacitor step-up DC/DC converter with an input voltage range from 2.9V to 5.5V. Switch reconfiguration and fractional switching techniques are utilized to achieve high efficiency over the entire input voltage range.

The FAN5665 includes built-in under-voltage lockout, short circuit, and thermal protection circuitry.

The FAN5665 is available in an 8-bump 0.4mm pitch WLCSP package.