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ISL97649BIRTZ-EVALZ

TFT-LCD Supply + DCP + VCOM Amplifier + Gate Pulse Modulator + RESET

Renesas Electronics 

ISL97649B

NOT RECOMMENDED FOR NEW DESIGNS

NO RECOMMENDED REPLACEMENT

contact our Technical Support Center at

1-888-INTERSIL or www.intersil.com/tsc

TFT-LCD Supply + DCP + VCOM Amplifier + Gate Pulse Modulator + RESET

DATASHEET

FN7927

Rev 2.00

June 27, 2013

The ISL97649B is an integrated power management IC (PMIC)

for TFT-LCDs used in notebooks, tablet PCs, and monitors. The

device integrates a boost converter for generating AVDD. VON

and VOFF are generated by a charge pump driven by the

switching node of the boost. The ISL97649B also includes a

VON slice circuit, reset function, and a high performance VCOM

amplifier with DCP (Digitally Controlled Potentiometer) that is

used as a VCOM calibrator.

The AVDD boost converter features a 1.5A /0.18Ω boost FET with

600/1200kHz switching frequency. The gate pulse modulator

can control gate voltage up to 30V, and both the rate and slew

delay time are selectable. The supply monitor generates a

reset signal when the system is powered down.

The ISL97649B provides a programmable VCOM with I2C

interface. One VCOM amplifier is also integrated in the chip. The

output of VCOM is power-up with voltage at the last programmed

8-bit EEPROM setting.

Features

• 2.5V to 5.5V input

• 1.5A, 0.18Ω integrated boost FET

• VON /VOFF supplies generated by charge pumps driven by

boost switch node

• 600/1200kHz selectable switching frequency

• Integrated gate pulse modulator

• Reset signal generated by supply monitor

• Integrated VCOM amplifier

• DCP

- I2C serial interface, address:100111, msb left

- Wiper position stored in 8-bit nonvolatile memory and

recalled on power-up

- Endurance, 1,000 data changes per bit

• UVLO, UVP, OVP, OCP, and OTP protection

• Pb-free (RoHS compliant)

• 28 Ld 4X5 QFN

Applications

• LCD notebook, tablet, and monitor

Pin Configuration

ISL97649B

(28 LD 4X5 QFN)

TOP VIEW

28

FB 1

PGND 2

CE 3

RE 4

VGH 5

VGHM 6

VFLK 7

VDPM 8

27 26 25 24

GND

THERMAL

PAD

23

22 NC

21 CD2

20 NC

19 RESET

18 NC

17 VDIV

16 NEG

15 VOUT

9 10 11 12 13 14

FN7927 Rev 2.00

June 27, 2013

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