HV9982 查看數據表（PDF） - Supertex Inc

零件编号

产品描述 (功能)

生产厂家

HV9982

Three-Channel, Closed-Loop, Switch Mode LED Driver IC

Supertex Inc 

Internal Block Diagram

VIN EN

VDD

HV9982

CLK

RAMP

PWMD1

FLT1

OVP1

BANDGAP

1/12

REF

CLK A

CLK B

CLK C

Linear

Regulator

UVLO

POR

Shared circuitry

RAMP

Generator

RAMP

RAMP

+

-

+

RAMP

-

+

REF -

PWMD A

FC

OVD A

CLK A

S1 S2

Replicated for each channel

SQ

PWMD A

R

FC

Q

+

BLANKING

-

CLK A

PWMD A

SCD A +

-

FD A

PWMD A

+

-

2

BLANKING

PWMD A

DIS

GATE1

CS1

REF1

FDBK1

COMP1

S1

S2

SKIP

S1

S2

POR

FDA

FDB

FDC

0.1V +

-

Fault

5V

+

-

Shared circuitry

SQ

R

Fault

DIS

FC

HV9982

5

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