FAN5362UC33X

Fairchild Semiconductor### 非隔离直流/直流转换器，Fairchild Semiconductor

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