ISL97672

FN7632 Rev.4.00

Page 3 of 17

Sep 8, 2017

Pin Configuration

ISL97672

(20 LD 4X3 QFN)

TOP VIEW

Ordering Information

PART

NUMBER

(Notes 1, 2, 3)

PART

MARKING

PACKAGE

(RoHS

Compliant)

PKG.

DWG. #

ISL97672IRZ

7672

20 Ld 4x3 QFN

L20.3x4

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), please see device

information page for ISL97672. For more information on

MSL please see techbrief TB363.

FAULT

VIN

EN

VDC

PWM

/FLAG

OVP

CH5

CH4

CH3

CH2

CH1

1

2

3

4

5

6

16

15

14

13

12

11

20 19 18 17

789

10

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

PIN NAME

PIN # TYPE

DESCRIPTION

FAULT

1

O

Fault disconnect switch

VIN

2

S

Input voltage for the device and LED power

EN

3

I

The device needs 4ms for initial power-up Enable. It will be disabled if it is not biased for longer

than 28ms.

VDC

4

S

De-couple capacitor for internally generated supply rail.

PWM

5

I

PWM brightness control pin.

/FLAG

6

O

/Flag = 0 for any fault conditions. /Flag =1 for normal condition. Open drain that needs pull up.

NC

7

I

No Connect

FSW

8

I

Boost switching frequency set pin by connecting a resistor. See “Switching Frequency” on page 11

for resistor calculation

AGND

9

S

Analog Ground for precision circuits

CH0

10

I

Input 0 to current source, FB, and monitoring

CH1

11

I

Input 1 to current source, FB, and monitoring

CH2

12

I

Input 2 to current source, FB, and monitoring

CH3

13

I

Input 3 to current source, FB, and monitoring

CH4

14

I

Input 4 to current source, FB, and monitoring

CH5

15

I

Input 5 to current source, FB, and monitoring

OVP

16

I

Overvoltage protection input

RSET

17

I

Resistor connection for setting LED current, (see Equation 1 for calculating the ILEDpeak)

COMP

18

O

Boost compensation pin

PGND

19

S

Power ground (LX Power return)

LX

20

O

Input to boost switch