ISL97671IRZ-T データシートの表示（PDF） - Renesas Electronics

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ISL97671IRZ-T

6-Channel SMBus/I2C or PWM Dimming LED Driver with Phase Shift Control

Renesas Electronics 

ISL97671

VIN = 4.5~26.5V

VOUT = 45V*, 40mA PER STRING

ISL97671

1 FAULT

2 VIN

4 VDC

LX 20

OVP 16

PGND 19

7 SMBCLK/SCL

6 SMBDAT/SDA

5 PWM

3 EN

CH0 10

CH1 11

CH2 12

CH3 13

17 RSET

CH4 14

8 FPWM

CH5 15

9 AGND

COMP 18

*VIN > 12V

FIGURE 2. ISL97671 TYPICAL APPLICATION DIAGRAM WITH EXTERNAL PWM SIGNAL CONTROL

Block Diagram

VIN = 4.5V TO 26.5V

45V*, 40mA PER STRING

(6 x 13 = 78 EDs)

VIN

FAULT

LX

EN

VDC REG

OSC AND

RAMP

COMP

fPWM LED PWM

CONTROL

FAULRTE/SGTISATTUERS

= 0

IMAX ILIMIT

LOGIC

ISL97671

FET

DRIVER

OVP

PGND

COMP

RSET

AGND

GM

AMP

REFERENCE

GENERATOR

+-

HIGHEST VF

STRING

DETECT

+-

SMBCLK/SCL

SMBDAT/SDA

PWM

REGISTERS

PWM BRIGHTNESS CONTROL

SMBUS/I2C DEVICE CONTROL PWM/OC/SC

INATNEDRPFWACME

CLOONGTIRCOlDC

FAULT/STATUS

DC

IDENTIFICATION

BRIGHTNESS CONTROL

CONFIGURATION

CH0

DOECT,ESCCT CH5

OC, SC

DETECT

FARUELGTIS/STTEARTUS

SETNEMSOPR

+-

FRAEULGT/ISSTTAETURS

*VIN > 12V

FIGURE 3. ISL97671 BLOCK DIAGRAM

FN7631 Rev.4.00

Sep 7, 2017

Page 2 of 27

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