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HV9931 Datasheet(PDF) 7 Page - Supertex, Inc |
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HV9931 Datasheet(HTML) 7 Page - Supertex, Inc |
7 / 8 page 7 HV9931 Pin # Pin Name Description 1 VIN This pin is the input of a high voltage regulator. 2, 7 CS1, CS2 These pins are used to sense the input and output currents of the converter. They are the inverting inputs of the internal comparators. 3 GND Ground return for all the internal circuitry. This pin must be electrically connected to the ground of the power train. 4 GATE This pin is the output gate driver for an external N-channel power MOSFET. 5 PWMD When this pin is pulled to GND, switching of the HV9931 is disabled. When the PWMD pin is released, or external TTL high level is applied to it, switching will resume. This feature is provided for applications that require PWM dimming of the LED lamp. 6VDD This is a power supply pin for all internal circuits. It must be bypassed with a low ESR capacitor to GND. 8RT Oscillator control. A resistor connected between this pin and GND sets the PWM frequency. A resistor connected between this pin and GATE sets the PWM off-time. Pin Description |
Similar Part No. - HV9931_07 |
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Similar Description - HV9931_07 |
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