Description

The FAN5362 is a 500mA or 705mA, step-down, switching voltage regulator that delivers a fixed output voltage from an input voltage supply of 2.7V to 5.5V. Using a proprietary architecture with synchronous rectification, the FAN5362 is capable of delivering a peak efficiency of 96, while maintaining efficiency over 90 with load currents as low as 1mA.

This regulator transitions seamlessly into and out of 100 duty cycle operation when the supply dips to or below the regulation setpoint and smoothly recovers full regulation without overshoot when the supply recovers.

Features

■ 3MHz Fixed-Frequency Operation

■ 45µA Typical Quiescent Current

■ 1.80 to 3.6V Fixed Output Voltage

■ 500mA or 750mA Output Current Capability

■ 2.7V to 5.5V Input Voltage Range

■ Smooth Transitions to/from 100 Duty Cycle when VIN Drops

■ PFM Mode for High Efficiency in Light Load

■ Best-in-Class Load Transient Response

■ Best-in-Class Efficiency

■ Forced PWM and External Clock Synchronization

■ Internal Soft-Start

■ Input Under-Voltage Lockout (UVLO)

■ Thermal Shutdown and Overload Protection

■ 6-Bump WLCSP, 0.4mm Pitch or 6-Lead 2 x 2mm Ultrathin Molded Leadless Package

Applications

■ SD Flash Memory Power Supply

■ RF Transeiver Power

■ Cell Phones, Smart Phones

■ Tablets, Netbooks®, Ultra-Mobile PCs

■ 3G, LTE, WiMAX™, WiBro®, and WiFi® Data Cards

■ Gaming Devices, Digital CamerasDC/DC Micro Modules