Datasheet > AME9003AEPHZ

AME9003AEPHZ

更新时间： 2024-02-17 20:03:11

品牌	Logo	应用领域
AKM		控制器
页数	文件大小	规格书
39页	255K
描述
CCFL Backlight Controller

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技术参数
数据手册

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AME9003AEPHZ 技术参数

生命周期：	Contact Manufacturer	包装说明：	,
Reach Compliance Code：	compliant	风险等级：	5.68
Is Samacsys：	N	Base Number Matches：	1

AME9003AEPHZ 数据手册

AME, Inc.

CCFL Backlight Controller

AME9003

n General Description

n Pin Configuration

The AME9003 is AME’ s next generation direct drive

CCFL controller. Like its cousins, the AME9001 and

AME9002, the AME9003 controller provides a cost effi-

cient means to drive single or multiple cold cathode fluo-

rescent lamps (CCFL), driving 3 external MOSFETs that,

in turn, drive a wirewound transformer that is coupled to

the CCFL.

24 23 22 21 20 19 18 17 16 15 14 13

AME9003

10 11 12

The AME9003, like the AME9002 includes extra cir-

cuitry that allows for a special one second start up pe-

riod wherein the voltage across the CCFL is held at a

higher than normal voltage to allow older tubes (or cold

tubes) a period in which they can” warm up” . During

this one second startup period the driving frequency is

adjusted off of resonance so that the tube voltage can be

controlled. As soon as the CCFL ” strikes” the special

start up period ends and the circuit operates in its normal

mode. However the AME9003 uses an extra capacitor to

accurately set the start up interval. In addition to that the

AME9003 features a soft start AND soft finish on each

dimming cycle edge in order to minimize any audible

AME9003

1. VREF

2. CE

3. SSC

4. RDELTA

5. SSC1ST

6. RT2

13. OUTC

14. OUTAPB

15. OUTA

16. VBATT

17. BRPOL

18. VDD

19. CT1

20. FB

21. COMP

22. BRIGHT

23. SSV

7. VSS

8. OVPH

9. OVPL

10.FCOMP

11.CSDET

12.BATTFB

24. PNP

vibrations during the dimming function.

Evaluation Board Available !!

The AME9003 also includes features such as, dimming

control polarity selection, undervoltage lockout and fault

detection. It is designed to work with input voltages from

7V up to 24V. When disabled the circuit goes into a zero

n System Block Diagram

current mode.

External

Controller

CCFL Array

Components

n Features

l Small 24 pin QSOP package

l 24 pin PDIP/SOIC also available

l Drives multiple tubes

AME

9003

l Special 1 second start up mode

l Automatically checks for common fault

conditions

LIGHT

Resistors

Capacitors

l 7.0V < Vbatt < 24V

l Low component count

l Low Idd < 3.5mA

n Applications

l <1uA shutdown mode

l Battery UV lockout

l Notebook computers

l LCD/TFT displays

l Brightness polarity select

l Soft-start, soft-finish dimming

12 3 4 5 6 7...39

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