AME9003 datasheet(9/39 Pages) AKM

Part #	AME9003

Description	CCFL Backlight Controller

Download	39 Pages

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Manufacturer	AKM [Asahi Kasei Microsystems]

Direct Link	http://www.akm.com

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9 / 39 page

AME, Inc.

9

AME9003

CCFL Backlight Controller

Preliminary

n Block Diagram

Figure 1

1

2

3

4

5

6

7

8

9

10

11

12

3.4V

REF

5V

LDO

13

14

15

16

17

18

19

20

21

22

23

24

C

B

A

B

A

C

Fault

Logic

V

CO

2bit

Count

2

7.5V

Dimming

RAMP

CEN

REF

C2

1

µ

CE

SSC

Logic

To Chip Enable

C3

0.047

µ

R3

15k

RDELTA

SSC1ST

V

Supply

RT2

R2

40K

VSS

OVPH

OVPL

FCOMP

CSDET

R35

R36

D16

R10

680

R9

221

BATTFB

C32

2.2nF

Q1

VBATT

R4

2K

PNP

SSV

BRIGHT

COMP

FB

CT1

VDD

BRPOL

VBATT

OUTA

OUTAPB

OUTC

C14

1000pF

BRIGHTNESS

Control VOLT.

C8

47nF

R7

30K

C4

0.047

µF

C7

4.7

µF

HI=Reverse

LO=Normal

C7

Q2

Q3-1

Q3-2

HS

Driver

PWM

2.5V

RES_SSV

2VOK

CE

BLANK

Later

140

µA

1.5uA

1

ST

RES_SSC

3V

RAMP

CLK

1.5V

3.3V

2.5V

1

µA

RES_SSC

RES_SSV

RES_FCOMP

BAITOK

RES_FCOMP

1.25V

1.5V

1.25V

C31

0.47

µF

EA1

STRIKE

R41

10K

R40

60K

VBATT

VDD

D20

D21

R40

7.5k

C34

0.01u

R42

10k

10uA

20uA

FIRST

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