ISL97635 查看數據表（PDF） - Intersil

零件编号

产品描述 (功能)

比赛名单

ISL97635

SMBus 8-Channel LED Driver

Intersil 

ISL97635

Block Diagram

VBL+ = 6V TO 24V

34.5V, 30mA PER STRING

(8x9 = 72 WHITE LEDS)

VIN

VDC

REG

OSC AND

RAMP

COMP

fPWM LED PWM

CONTROL

FAULT

ISL97635

FAULT/STATUS

REGISTER

Σ =0

LOGIC

FET

DRIVER

IMAX ILIMIT

LX

OVP

PGND

COMP

RSET

GND

SMBCLK

SMBDAT

PWMI

PWMO

GM

AMP

REFERENCE

GENERATOR

+

-

HIGHEST VF

STRING

DETECT

+

-

SMBUS

INTERFACE

REGISTERS

PWM BRIGHTNESS CONTROL

DEVICE CONTROL

FAULT/STATUS

PWM/OC/SC

IDENTIFICATION

AM

DC BRIGHTNESS CONTROL

CONFIGURATION

OC, SC

DETECT

IIN0

IIN7

OC, SC

DETECT

FAULT/STATUS

REGISTER

TEMP

SENSOR

+

-

FAULT/STATUS

REGISTER

FIGURE 1. ISL97635 BLOCK DIAGRAM

3

FN6434.2

December 22, 2008

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