ISL976787IBZ-T 데이터 시트보기 (PDF) - Intersil

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ISL976787IBZ-T

4-Channel LED Driver with Phase Shift Control and 10-Bit Dimming Resolution

Intersil 

Block Diagram

VIN: 9V~32V

FUSE

ISL97687

160mA MAX PER STRING

VIN

EN

SLEW GD CS

VDC

VLOGIC

OSC

REG1

ANALOG BIAS

REG2

DIGITAL

BIAS

fsw

OSC &

RAMP

COMP

OVP

FAULT/STATUS

REGISTER

Σ= 0

Imax

ILIMIT

O/P SHORT

OVP

LOGIC

FET

DRIVERS

COMP

ISET1

ISET2

CSEL

GM

AMP

+

-

REF

GEN

REF_OVP

REF_VSC

GND

FAULT/STATUS

CONTROL

HIGHEST VF STRING

DETECT

VSET

+

-

PWMI

EN_PS

STV

EN_VSYNC

ACTL

SERIAL

INTERFACE

ANALOG

INTERFACE

LED

DIMMING

CONTROLLER

PLL

OSC

OPEN CKT, SHORT CKT

DETECTS

1

2

3

TEMP

SENSOR

+

4

-

OVP

CH1

CH4

EN_ADIM

PWM_SET/PLL

FIGURE 3. ISL97687 BLOCK DIAGRAM

2

FN7714.0

September 15, 2011

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