Line Card

FAN5350

 2009-11-09

【Basic Info】

【Product Feature】

‧Up to 94% Efficiency
‧3MHz Fixed-Frequency Operation
‧600mA Output Current
‧1.82V fixed Vout
‧15µA Typical Quiescent Current
‧Best-in-Class Load Transient (20mV Typ.)
‧2.7V to 5.5V Input Voltage Range
‧Synchronous Operation
‧Pulse Skip Power Save Mode
‧Soft-Start Capability
‧UVLO, TSD, and SCP protection
‧WLCSP 5-bump 1 x 1.37mm / MLP 6-lead 3 x 3mm
3MHz, 600mA Step-Down DC-DC Converter in Chip-Scale and MLP Packaging

【Application】

‧Cell Phones, Smart-Phones
‧Pocket PCs
‧WLAN DC-DC Converter Modules
‧PDA, DSC, PMP, and MP3 Players
‧Portable Hard Disk Drives

【Overview】

The FAN5350 is a step-down switching voltage regulator that delivers a fixed 1.82V from an input voltage supply of 2.7V to 5.5V. Using a proprietary architecture with synchronous rectification, the FAN5350 is capable of delivering 600mA at over 90% efficiency, while maintaining a very high efficiency of over 80% at load currents as low as 1mA. The regulator operates at a nominal fixed frequency of 3MHz at full load, which reduces the value of the external components to 1µH for the output inductor and 4.7µF for the output capacitor.