ISL97673IRZ-TK View Datasheet(PDF) - Renesas Electronics

Part Name

Description

Manufacturer

ISL97673IRZ-TK

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

Renesas Electronics 

ISL97673

Block Diagram

VIN = 4.5V~26V

VIN

FAULT

10uH/3A

45V*, 2450mA per string

78 (6x13) LEDs

LX 4.7uF/50V

VDC

FPWM

REG

Bias

OSC &

fsw

RAMP

Comp

Dimming

Controller

O/P Short

Faul t/S tatu s

Reg is ter



Imax ILIMIT

Boost SW

Logic

FET

Drivers

OVP

OVP

PGND

COMP

GM

AMP

RSET

GND

+ REF

-

GEN

REF_OVP

REF_ VS C

SMBCLK(SCL)

SMBDAT(SDA)

SMBus/

I2C

Control

Phase Shift

Controller

Fault/Status Control

Highest VF

String Detect

VSET

DAC0

+

-

DAC0

PW M 0

Con tro ls

PWM0

DAC 1

PWM1

Controls

DAC1 +

-

PWM1

Open Ckt,pe Short Ckt

Detects

0

Temp

Sensor

CH0

CH1

CH5

Faul t/S tat us

Register

1

**VVINin >> 61V2V

SEL1

SEL2

Dimming Mode

Selection

DAC5

+

5

-

D AC5

EN/PWM

Ext PWM

Control Ckt

ISL97673

PWM5

Co ntrol s

PWM5

FIGURE 2. ISL97673 BLOCK DIAGRAM

FN7633 Rev.3.00

Sep 19, 2017

Page 3 of 28

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