BCT3511S

DC/DC Converter for 1 Watt White LED

General Description

The BCT3511S is a constant frequency charge pump DC/DC converter designed for 1 watt white LED driver with high driving current capability up to 350mA. The BCT3511S has wide input voltage range from 1.8V to 3.6V is intended for use in low cost application where standard batteries are preferred. The mode switching from continuous to flash mode is easily accommodated by main power switch to minimize the risk of battery leakage and corrosion. The internal thermal protection circuit will activate by cutting the output current in half if the chip temperature go above 110 °C.

Features

• On chip DC/DC converter
• Wide input voltage range: 1.8V to 3.6V
• Enter flash mode without hardware switch:
• Flash mode is enabled by power switch ON, then OFF -> ON within ~1 Second
• Maximum output current: 350mA
• Integrated thermal protection circuit
• On Chip Oscillator
• Low power consumption
• Wide operation temperature:
• -20 °C to 70 °C
• Output current adjustable by external resistor at pin CS
• Shutdown control pin
• Available in SOP14 and Pd-free

Applications

• High power white LED Torch
• White LED driver for mobile phone
• Handheld Electronics
• Lighting Applications

Package 

 Circuit Diagram 

Product Overview Download [pdf] 

Full Datasheet Download [pdf]