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ISL97673

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

Renesas Electronics 

ISL97673

Ordering Information

PART NUMBER

PART

PACKAGE

PKG.

(Notes 1, 2) MARKING (RoHS-Compliant) DWG. #

ISL97673IRZ

7673

20 Ld 4x3 QFN

L20.3x4

ISL97673IRZ-EVAL Evaluation Board

NOTES:

1. Add “-T” suffix for 6k unit or “-TK” suffix for 1k unit tape and

reel options. Refer to TB347 for details on reel

specifications.

2. These Intersil Pb-free plastic packaged products employ

special Pb-free material sets, molding compounds/die attach

materials, and 100% matte tin plate plus anneal (e3

termination finish, which is RoHS compliant and compatible

with both SnPb and Pb-free soldering operations). Intersil Pb-

free products are MSL classified at Pb-free peak reflow

temperatures that meet or exceed the Pb-free requirements

of IPC/JEDEC J STD-020.

3. For Moisture Sensitivity Level (MSL), see the product

information page for ISL97673. For more information on

MSL, see TB363.

Pin Configuration

ISL97673

(20 LD QFN)

TOP VIEW

FAULT 1

VIN 2

EN/PWM 3

VDC 4

SEL1 5

SMBDAT(SDA)

/_FLAG

6

20 19 18 17

7 8 9 10

16 OVP

15 CH5

14 CH4

13 CH3

12 CH2

11 CH1

Pin Descriptions (I = Input, O = Output, S = Supply)

PIN

NUMBER

1

2

3

PIN

NAME

FAULT

VIN

EN/PWM

4

VDC

5

SEL1

6

SMBDAT(SDA)/_FLAG

7

SMBCLK(SCL)/SEL2

8

9

10, 11, 12,

13, 14, 15

16

17

FPWM

AGND

CH0, CH1, CH2, CH3, CH4,

CH5

OVP

RSET

18

COMP

19

PGND

20

LX

TYPE

O

S

I

S

I

I/O

I

I

S

I

I

I

O

S

O

DESCRIPTION

Fault disconnect switch

Input voltage for the device and LED power

Dual Functions: Enable pin and PWM brightness control pin or DPST control

input. The device needs 4ms for initial power-up Enable, then this pin can

be applied with a PWM signal with off time no longer than 28ms.

De-couple capacitor for internally generated supply rail.

Mode select pin 1

When SEL1 is high, this pin is configured as the SMBus/I2C serial data

input/output.

When SEL1 is low or floating, this pin is configured as the fault flag output

and will be pulled low when a fault condition occurs. An external pull-up is

required.

When SEL1 is high, this pin is configured as the SMBus/I2C serial clock

input.

When SEL1 is low or floating, this pins is configured as mode select pin 2,

and operates in conjunction with SEL1 to determine the operating mode.

See Table 1 for details.

PWM Dimming Frequency Set Pin with RFPWM

Analog Ground for precision circuits

Input 0, Input 1, Input 2, Input 3, Input 4, Input 5 to current source, FB,

and monitoring

Overvoltage protection input

Resistor connection for setting LED current, (see Equation 2 for calculating

the ILEDpeak)

Boost compensation pin

Power ground

Input to boost switch

FN7633 Rev.3.00

Sep 19, 2017

Page 4 of 28

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