TD8203 Datasheet | Techcode

Techcode® White LED Step-up Converter General Description Features The TD8203 is a current-mode and fixed frequency boost converter with an integrated N-FET to drive white LEDs. The series connection allows the LED current to be identical for uniform brightness. Its low on-resistance of NFET and low feedback voltage reduce power loss and achieve high efficiency. Fast switching frequency(1.5MHz typical) allows using small-size inductor and both of input and output capacitors. An over voltage protection function,which monitors the output voltage via OVP pin, stops switching of the IC if the OVP voltage exceeds the over voltage threshold. An internal soft-start circuit eliminates the inrush current during start-up. The TD8203 also integrates under-voltage lockout, overtemperature protection, and current limit circuits to protect the IC in abnormal conditions. The TD8203 is available in a SOT-23-6A - Wide Input Voltage from 2.7V to 6V - Fixed 1.5MHz Switching Frequency - Reference Voltage : 0.2V - PWM Brightness Control with Wide Frequency - Range of 100Hz to 100k Hz - Build-In Power MOSFET : 0.2Ω - Open-LED Protection - Under-Voltage Lockout Protection - Over-Temperature Protection - <1m A Quiescent Current during Shutdown - SOT-23-6A - Halogen and Lead Free Available - Ro HS pliant Applications - White LED Display Backlighting - Cell Phone and Smart Phone - PDA, PMP, MP3 - Digital Camera December, 20, 2011 Techcode Semiconductor Limited 1 .techcodesemi. Techcode® White LED Step-up Converter Pin Assignments Pin...