General Description Features

The ZCC7331 is a dimmable constant current LED driver with active power factor correction. It suppoZCCs high power factor across a wide range of line voltages, and it drives the conveZCCer in the Quasi-Resonant (QR) mode to achieve the higher efficiency. By using Primary Side Regulation (PSR), the ZCC7331 controls the output current accurately without a shunt regulator and an opto-coupler at the secondary side, reducing the external component count, the cost, and the volume of the driver board. Tight LED Current Regulation  SmaZCC CC/CV Mode Control Wide Dimming Range (1% to 100%) Power Factor Correction THD Optimization (THD < 10%) Quasi-Resonant (QR) Operation Fast StaZCCup Adjustable CV level Soft Drive for the Better EMI Performance Multiple Protection

 Features

The ZCC7331 is compatible with the analog dimming. The output current can be modulated by the PWM duty ratio or the average level of DIM pin. LED Open-Circuit Protection  LED ShoZCC-Circuit Protection  Over Load Protection The ZCC7331 embeds comprehensive protection functions for robust designs, including LED open-circuit protection, LED shoZCC-circuit protection, output diode shoZCC-circuit protection, VDD Under-Voltage Lockout (UVLO), VDD Over-Voltage Protection (VDD OVP), over load protection, input under / over voltage  Input Under / Over Voltage Protection  Output Diode ShoZCC-Circuit Protection  VDD Under Voltage Lockout  VDD Over Voltage Protection External / Internal OTP  protection, external / internal Over-Temperature  Cycle-by-Cycle Current Limitation Protection (OTP), and cycle-by-cycle current limitation.

Applications  AC-DC LED Lighting Driver

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