FAN5665

FAN5665 — High-Efficiency, Adaptive Charge Pump 5V Boost February 2008 www.datasheet4u.com FAN5665 High-Efficiency, Adaptive Charge Pump 5V Boost Features ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ ƒ 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 +5V C OUT 2.2µF C2 0.22µF VOUT C2+ C2C1C1 0.22µF C1+ VIN C IN 2.2µF GND EN +2.9 to 5.5V 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. Applications ƒ ƒ ƒ ƒ USB I/O Supply Regulators Cell Phones, Smart-Phones Pocket PCs PDA, DSC, PMP, and MP3 Players Figure 1. Typical Application Ordering Information Part Number FAN5665UCX Operating Temperature Range -40°C to +85°...