ISL97649A

FN7928 Rev 3.00

Page 3 of 22

June 27, 2013

Pin Descriptions

PIN#

SYMBOL

DESCRIPTION

1

FB

AVDD boost converter feedback. Connect to the center of a voltage divider between AVDD and GND to set the AVDD voltage.

2PGND

Power ground

3

CE

Gate Pulse Modulator Delay Control. Connect a capacitor between this pin and GND to set the delay time.

4

RE

Gate Pulse Modulator Slew Control. Connect a resistor between this pin and GND to set the falling slew rate.

5

VGH

Gate Pulse Modulator High Voltage Input. Place a 0.1µF decoupling capacitor close to the VGH pin.

6

VGHM

Gate Pulse Modulator Output for gate driver IC

7

VFLK

8

VDPM

Gate Pulse Modulator Enable. Connect a capacitor from VDPM to GND to set the delay time before GPM is enabled. A current

source charges the capacitor on VDPM.

9

GPM_LO

Gate Pulse Modulator Low Voltage Input; place a 0.47µF decoupling capacitor close to the GPM_LO pin.

10

AVDD

DCP and VCOM amplifier high voltage analog supply; place a 0.47µF decoupling capacitor close to the AVDD pin.

11

SCL

12

SDA

13

POS

VCOM Amplifier Non-inverting input

14

RSET

DCP sink current adjustment pin; connect a resistor between this pin and GND to set the resolution of the DCP output voltage.

15

VOUT

VCOM Amplifier output

16

NEG

VCOM Amplifier inverting input

17

VDIV

18

ADJ

19

RESET

Voltage detector reset output

20

L_OUT

LDO output. Connect at least one 1µF capacitor to GND for stable operation.

21

CD2

Voltage detector rising edge delay. Connect a capacitor between this pin and GND to set the rising edge delay.

22

L_IN

LDO input. Connect a 1µF decoupling capacitor close to this pin.

23

SS

Boost Converter Soft-Start. Connect a capacitor between this pin and GND to set the soft-start time.

24

COMP

Boost converter compensation pin. Connect a series resistor and capacitor between this pin and GND to optimize transient

response and stability.

25

FREQ

Boost Converter frequency select; pull it to logic high to operate boost at 1.2MHz. Connect this pin to GND to operate boost at

600kHz.

26

VIN

IC input supply. Connect a 0.1µF decoupling capacitor close to this pin.

27

LX

AVDD boost converter switching node

28

EN

AVDD enable pin

Ordering Information

PART NUMBER

(Notes 2, 3)

PART

MARKING

(V)

TEMP RANGE

(°C)

PACKAGE

(Pb-free)

PKG.

DWG. #

ISL97649AIRZ (Note 1)

97649 AIRZ

2.5 to 5.5

-40 to +85

28 Ld 4x5 QFN

L28.4x5A

NOTES:

1. Add “-T*” suffix for tape and reel. Please 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 ISL97649A For more information on MSL please see techbrief TB363.