BL3406B - SHANGHAI BELLING

BL3406B 800mA Synchronous Buck Converter

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% dut.

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.