High Power LED (PT6904)

PT6904 is a constant-current LED driver IC utilized constant frequency, controls buck, boost or buck-boost switch converter. In each control mode, PT6904 adopts the inductance current continuous conduction, peak current control mode and the feedback of the output current. It’s controlled by the internal transconductance operational amplifier and external adjustable slope compensation, it is able to gain the high precision output current in closed loop.

The typical functions of PT6904 such as UVLO (Under Voltage Lockout), input current limit, open LED protection output short circuit protection, output current precision control, linear dimming, PWM dimming, etc. In addition, multiple the sync pin of PT6904s or input the same clock signal, these IC  will operate on the same frequency.

FEATURES
• >90% efficiency
• Operating voltage: 9V~36V
• Constant-current driver
• Switch control mode: Buck, Boost, Buck-Boost
• Stable operation frequency
• Slope compensation
• Output current closed loop control
• Input current limit, output over voltage protection, output short-circuit protection
• Linear dimming & PWM dimming
• Synchronization
• Soft start