ZCC7331 Primary-Side Regulation Dimmable LED Driver Controller with Active-PFC
■The ZCC7331 is a dimmable constant current LED driver with active power factor correction. It supports high power factor across a wide range of line voltages, and it drives the converter 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.
■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.
■The ZCC7331 embeds comprehensive protection functions for robust designs,including LED open-circuit protection,LED short-circuit protection,output diode short-circuit protection,VDD Under-Voltage Lockout (UVLO),VDD Over-Voltage Protection (VDD OVP), over load protection,input under / over voltage protection,external / internal Over-Temperature Protection(OTP), and cycle-by-cycle current limitation.
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Primary-Side Regulation Dimmable LED Driver Controller 、 dimmable constant current LED driver |
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Datasheet |
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Please see the document for details |
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SOP-8 |
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English Chinese Chinese and English Japanese |
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2021/7/6 |
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7.1 MB |
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