ADP3610 datasheet(9/10 Pages) AD

tên linh kiện	ADP3610

Giải thích chi tiết về linh kiện	320 mA Switched Capacitor Voltage Doubler

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nhà sản xuất	AD [Analog Devices]

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9 / 10 page

REV. A

ADP3610

–9–

TFT LCD System Design

The ADP3610 is very useful for applications like notebook LCD

displays which require a low profile solution. Figure 22 shows a

typical LCD display application. A TFT LCD display requires

+5 V main voltage and +17 V and –5 V auxiliary voltages. The

ADP3610 doubles the input voltage, which is then fed through a

discrete linear regulator to generate +5 V. The main voltage is

also fed to the ADP3605, which inverts the input voltage to

generate –5 V. The CP+ node of the ADP3605 pump capacitor

is fed to a diode-capacitor ladder network to quadruple the main

voltage, i.e., 4

× VMAIN – 6 × VDIODE ≈ 17 V.

VIN

CM1

GND

CM2

VIN

CP1

GND

VOUT

CP2

VIN

ADP3610

1 F

VIN = 3.0V TO 3.6V

1 F

CP1

2.2 F

1 F

CP2

2.2 F

1 F

0.1 F

1 F

25.5k

24.9k

470

VMAIN = 5V @

150mA

VGH = 17V @

3mA

CP+

GND

VIN

VOUT

VSNS

CP–

2.2 F

1 F

VGL = –5V @

30mA

NC = NO CONNECT

ADP3605

2.2 F

TL431

Figure 22. LCD Display Application

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