ISL97635AIRZ View Datasheet(PDF) - Intersil

Part Name

Description

View to exact match

ISL97635AIRZ

SMBus 6-Channel LED Driver

Intersil 

ISL97635A

Block Diagram

VBL+ = 6V TO 24V

34.5V, 30mA PER STRING

(6 x 9 = 54 WHITE LEDS)

VIN

FAULT

LX

VDC

REG

OSC AND

RAMP

COMP

fPWM LED PWM

CONTROL

ISL97635A

FAULT/STATUS

REGISTER

Σ =0

LOGIC

FET

DRIVER

IMAX ILIMIT

OVP

PGND

COMP

RSET

GND

SMBCLK

SMBDAT

PWMI

PWMO

GM

AMP

REFERENCE

GENERATOR

+

-

HIGHEST VF

STRING

DETECT

+

-

REGISTERS

PWM BRIGHTNESS CONTROL

SMBUS

ININTTEERRFFAACCEE

DEVICE CONTROL

FAULT/STATUS

IDENTIFICATION

DC BRIGHTNESS CONTROL

PWM/OC/SC

AM

CONFIGURATION

OC, SC

DETECT

IIN0

IIN5

OC, SC

DETECT

FAULT/STATUS

REGISTER

TEMP

SENSOR

+

-

FAULT/STATUS

REGISTER

FIGURE 1. ISL97635A BLOCK DIAGRAM

3

FN6564.2

December 22, 2008

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