ZD832

ZD832 Transformerless LED Driver Universal Transformerless AC-DC Constant Current LED Driver Features AC to DC Constant Current Driver No Transformer, No External Bridge Rectifier 85VAC to 240VAC Input Voltage Range Programmable up to 30mA Constant Output Current PWM or Analog Dimming Control Over-Temperature Protection Over-Voltage Limiting on Internal Power Transistor High Voltage Static Circuit Design With No EMI Thermally Enhanced 20-Lead Exposed TSSOP Green Package Zywyn www.DataSheet4U.com Advance Product Information ZD832 General Description The ZD832 is a high voltage, transformerless AC-DC constant current driver for driving a string of white or RGB LEDs in series. It operates from an universal input voltage of 85VAC to 240VAC and generates a programmable constant output current. The high operating voltage of ZD832, along with its linear control architecture eliminates the need for an external inductor, transformer and rectifying diode bridge. The output current level is set by a single resistor and can be set as high as 30mA. Dimming control can be accomplished by using pulse-width modulation signal with varying duty cycle on the PWM pin or by applying an analog DC voltage on the ISET pin. Thermal and over-voltage circuitry protects the internal power transistors from excessive power dissipation. The ZD832 is available in a thermally enhanced 20-pin exposed TSSOP green package. Applications Offline LED Lamps and Fixtures LCD Panel Disp...