HV9910BNG-G Ver la hoja de datos (PDF) - Microsemi Corporation

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Fabricante

HV9910BNG-G

Universal High-Brightness LED Driver

Microsemi Corporation 

HV9910B

2.0 PIN DESCRIPTION

The locations of the pins are listed in Package Type.

TABLE 2-1: PIN DESCRIPTION

Pin #

8-Lead SOIC 16-Lead SOIC

Function

Description

1

1

VIN

Input of an 8.0 - 450V linear regulator.

Current sense pin used to sense the FET current by means of an

2

4

CS

external sense resistor. When this pin exceeds the lower of either

the internal 250mV or the voltage at the LD pin, the GATE output

goes low.

3

5

GND

Ground return for all internal circuitry. This pin must be electrically

connected to the ground of the power train.

4

8

GATE

Output GATE driver for an external N-channel power MOSFET.

PWM dimming input of the IC. When this pin is pulled to GND, the

5

9

PWMD GATE driver is turned off. When the pin is pulled high, the GATE

driver operates normally.

6

12

VDD

Power supply for all internal circuits.

It must be bypassed with a low ESR capacitor to GND (≥0.1μF).

7

13

LD

Linear dimming input and sets the current sense threshold as long

as the voltage at the pin is less than 250mV (typ).

Sets the oscillator frequency. When a resistor is connected

8

14

RT

between RT and GND, the HV9910B operates in constant fre-

quency mode. When the resistor is connected between RT and

GATE, the IC operates in constant off-time mode.

-

2, 3, 6, 7, 10,

11, 15, 16

NC

No connection

 2015 Microchip Technology Inc.

DS20005344A-page 5

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