BL3406B

BL3406B 1.5 MHz, 800mA Synchronous Buck Converter FEATURES High Efficiency: Up to 96% 1.5MHz Constant Switching Frequency Current Mode Operation for Excellent Line and Load Transient Response No Schottky Diode Required 2.5V to 5.5V Input Voltage Range 1.0V,1.2V,1.5V,1.8V,2.5V and 3.3V Fixed/Adjustable Output Voltage 100% Duty Cycle in Dropout Mode Low Quiescent Current: 180µA Over temperature Protection Short Circuit Protection Shutdown Quiescent Current < 1µA Space Saving 5-Pin Thin SOT23 Package APPLICATIONS Cellular and Smart Phones Wireless Handsets and DSL Modems Microprocessors and DSP Core Supplies PDAs Digital Still and Video Cameras MP3/MP4/MP5 Players Portable Instruments ORDERING INFORMATION BL3406B –XX X XXX Package： TRN: TSOT23-5 RN: SOT23-5 Features: P: Standard (default, lead free) C: Customized Output Voltage： 10: 1.0V 12: 1.2V 15: 1.5V 18: 1.8V 25: 2.5V 33: 3.3V AD: Adjustable GPS Receivers DESCRIPTION The BL3406B is a constant frequency, 1.5MHz, slope compensated current mode PWM step-down converter working under an input voltage range of 2.5V to 5.5V. This feature makes the BL3406B suitable for single cell Li-ion battery-powered applications. The internal synchronous rectifier is desired to increase efficiency without an external Schottky diode. 100% duty cycle capability extends battery life in portable devices, while the quiescent current is 180µA at no load, and drops to < 1µA in shutdown. Pulse Skipping Mode ope...