Datasheet > AME9002AEJHZ

AME9002AEJHZ

更新时间： 2024-01-02 03:44:43

品牌	Logo	应用领域
安茂微 - AME		/
页数	文件大小	规格书
37页	815K
描述
Interface Circuit

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AME9002AEJHZ 技术参数

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

AME9002AEJHZ 数据手册

AME, Inc.

CCFL Backlight Controller

AME9002

n General Description

n Pin Configuration

The AME9002 is AME’s next generation direct drive

CCFL controller. Like its cousin, the AME9001, the

AME9002 controller provides a cost efficient means to

drive single or multiple cold cathode fluorescent lamps

(CCFL), driving 3 external MOSFETs that, in turn, drive a

wirewound transformer that is coupled to the CCFL.

14 13

24 23 22 21 20 19 18 17 16 15

AME9002

However the AME9002 includes extra circuitry that al-

lows for a special one second start up period 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 reso-

nance so that the tube voltage can be controlled. As

soon as the CCFL “strikes” the special start up period

11 12

AME9002

1. VREF

2. CE

3. SSC

4. RDELTA

5. FAULTB

6. RT2

13. OUTC

14. OUTAPB

15. OUTA

16. VBATT

17. BRPOL

18. VDD

ends and the circuit operates in its normal mode.

The AME9002 includes features such as soft start, duty

cycle dimming control, dimming control polarity selec-

tion, undervoltage lockout and fault detection. It is de-

signed to work with input voltages from 7V up to 24V.

7. VSS

19. CT1

20. FB

21. COMP

22. BRIGHT

23. SSV

8. OVPH

9. OVPL

10.FCOMP

11.CSDET

12.BATTFB

When disabled the circuit goes into a zero current mode.

24. PNP

n System Block Diagram

External

Components

n Features

CCFL Array

Controller

l Small package: 24 pins for QSOP/ SOIC/

PDIP packages

l Drives multiple tubes

AME

9002

l Special 1 second start up mode

l Automatically checks for common fault

conditions

LIGHT

Resistors

l 7.0V < Vbatt < 24V

Capacitors

l Low component count

l Low Idd < 3.5mA

l <1uA shutdown mode

l Battery UV lockout

n Applications

l Brightness polarity select

l Notebook computers

l LCD/TFT displays

12 3 4 5 6 7...37

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