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ISL97652

4-Channel Integrated LCD Supply with Dual VCOM Amplifiers

Intersil 

ISL97652

Absolute Maximum Ratings (TA = +25°C)

Maximum Pin Voltages, All Pins Except Below . . . . . . . -0.3 to 6.5V

SW, SUP, DRVP, DRVN, SUI, SWO, AVIN, POS1, NEG1, OUT1,

POS2, NEG2, OUT2, VGL . . . . . . . . . . . . . . . . . . -0.3 to 22V

SWI,SW2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 24V

SUI . . . . . . . . . . . . . . . . . . . . . . . V(SWI) - 6.5V to V(SWI) +0.3V

PVIN, SWB, VFLK, VDPM, EN1, EN2, FREQ . . . . . -0.3 to 15.5V

VGH, VGHM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to 36V

Recommended Operating Conditions

Input Voltage Range, VIN. . . . . . . . . . . . . . . . . . . . . . . . . 8V to 15V

Boost Output Voltage, AVDD . . . . . . . . . . . . . . . . . . . . . up to 19.5V

VON Output Range, VON . . . . . . . . . . . . . . . . . . . . . . +15V to +32V

VOFF Output Range, VOFF . . . . . . . . . . . . . . . . . . . . . . . -15V to -5V

Logic Output Voltage Range, VLOGIC . . . . . . . . . . . . +1.5V to +3.3V

Input Capacitance, CIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2x10µF

Boost Inductor, L1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH-10µH

Output Capacitance, COUT . . . . . . . . . . . . . . . . . . . . . . . . . . 2x22µF

Buck Inductor, L2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3µH-10µH

Operating Ambient Temperature Range . . . . . . . . . -40°C to +85°C

Operating Junction Temperature Range . . . . . . . . -40°C to +125°C

Thermal Information

Thermal Resistance

θJA (°C/W) θJC (°C/W)

7x7 QFN Package (Notes 1, 2) . . . . . .

26

1.5

Maximum Junction Temperature (Plastic Package) . . . . . . . +150°C

Maximum Storage Temperature Range . . . . . . . . . .-65°C to +150°C

Power Dissipation

TA ≤ +25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3.7W

TA = +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2.0W

TA = +85°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1.4W

Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below

http://www.intersil.com/pbfree/Pb-FreeReflow.asp

CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and

result in failures not covered by warranty.

NOTES:

1. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See

Tech Brief TB379.

2. For θJC, the “case temp” location is the center of the exposed metal pad on the package underside.

Electrical Specifications VIN = 12V, VBOOST = VSUP = 15V, VON = 25V, VOFF = -8V, over temperature from -40°C to +85°C, unless

otherwise stated.

PARAMETER

DESCRIPTION

CONDITIONS

MIN

TYP

MAX UNIT

SUPPLY PINS

PVIN

VSUP

VGH

AVIN

Supply Voltage

Charge Pumps Positive Supply

VON-SLICE Positive Supply

Op-AmpV Positive Supply

8

12

15

V

8

20

V

8

30

V

4.5

20

V

PIVIN

Quiescent Current into PVIN

Enabled, no switching

Disabled

3

6

mA

0.5

5

µA

ISUP

VSUP Supply Current

Enabled, no switching and

VPOUT = VSUP

Disabled

0.5

mA

5

µA

IAVIN

VREF

AVIN Supply Current

Reference Voltage

For AVIN range

TA = +25°C

1.252

1.240

7

mA

1.265 1.278 V

1.265 1.290 V

FOSC

Oscillator Frequency for Buck, Boost, VON

and VOFF Functions

FREQ = VIN

FREQ = GND

1100

550

1300

650

1500 kHz

750 kHz

AVDD BOOST

IBOOST

EFFBOOST

Boost Switch Peak Current

Peak Efficiency

Boost Peak Current limit

2.8

A

See graphs and component

recommendations

91

%

rDS(ON)

Switch On Resistance

125

200 mΩ

2

FN9287.1

November 2, 2007

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