TPS65642 datasheet(3/70 Pages) TI

No de pièce	TPS65642

Description	LCD Bias with Integrated Gamma Reference for Notebook PCs, Tablet PCs and Monitors

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Fabricant	TI [Texas Instruments]

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TPS65642

www.ti.com

SLVSBX6 – JULY 2013

2.4

RECOMMENDED OPERATING CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Input voltage range

2.6

6

V

BOOST CONVERTER 1

AVDD

Boost converter 1 output voltage range

6

9.1

V

IAVDD

Boost converter 1 output current when 6 V

≥ VIN ≥ 4 V

700(1)

mA

Boost converter 1 output current when 3.63 V

≥ VIN ≥ 2.64 V

400(1)

mA

L

Boost converter 1 inductor range

2.2

4.7

10

µH

COUT

Boost converter 1 output capacitance

10

µF

BOOST CONVERTER 2

AVDD

Input voltage range

6

8.1

9.1(2)

V

VGH

Output voltage range

16

24

40(3)

V

IGH

Output current

15

40

mA

L

Inductor

10

15

µH

COUT

Output capacitance

1

4.7

µF

RNTC

Thermistor resistance at 25°C

10

k

Ω

BUCK CONVERTER 1 (VCORE)

VCORE

Output voltage

1

1.1

1.3

V

ICORE

Output current

600

mA

L

Inductor

1

2.2

4.7

µH

COUT

Output capacitance

4.7

10

22

µF

BUCK CONVERTER 2 (VIO1)

VIO1

Output voltage

1.7

2.5

V

IIO1

Output current

200(4)

mA

L

Inductor

1

2.2

4.7

µH

COUT

Output capacitance

4.7

10

22

µF

LDO Regulator (VIO2)

VIO2

Output voltage

1.7

1.8

V

IIO

Output current

200

mA

COUT

Output capacitance

4.7

10

µF

PROGRAMMABLE VCOM

ISET

Programmable VCOM set current

50

µA

PROGRAMMABLE GAMMA CORRECTION

IGAM

Output current per channel

-100

100

µA

CGAM

Output capacitance

50

pF

(1)

This value includes the current that must be supplied to the input of boost converter 2.

(2)

VGH−AVDD must be greater than 9 V.

(3)

Output voltages greater than 36 V require an external cascode transistor.

(4)

This value includes the current supplied to the input of the linear regulator.

Electrical Specifications

3

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