Datasheet > DS3984T

DS3984T

更新时间： 2024-11-09 04:15:15

品牌	Logo	应用领域
达拉斯 - DALLAS		控制器
页数	文件大小	规格书
24页	790K
描述
4-Channel Cold-Cathode Fluorescent Lamp Controller

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DS3984T 数据手册

Rev 0; 4/05

4-Channel Cold-Cathode

Fluorescent Lamp Controller

General Description

Features

The DS3984 is a 4-channel controller for cold-cathode

fluorescent lamps (CCFLs) used to backlight liquid

crystal displays (LCDs) in TV and PC monitor applica-

tions. The DS3984 supports configurations of 1 to 4

lamps, and multiple DS3984 controllers can be cascad-

ed to support applications requiring more than 4 lamps.

♦ High-Density CCFL Controller for LCD TV and PC

Monitor Backlights

♦ Can Be Easily Cascaded to Support More Than

4 Lamps

♦ Minimal External Components

♦ Analog Brightness Control

Applications

♦ Per-Channel Lamp Control Ensures Equal

Brightness Among Lamps and Maximizes Lamp

Life

LCD Televisions

LCD PC Monitors

Ordering Information

♦ Gate Driver Phasing Minimizes DC Supply Current

Surges

PART

TEMP RANGE

-40°C to +85°C

PꢀN-PACKAGE

32 TQFP

♦ Per-Channel Lamp Fault Monitoring for Lamp

Open, Lamp Overcurrent, Failure to Strike, and

Overvoltage Conditions

DS3984T

DS3984T+

DS3984Z

DS3984Z+

32 TQFP

28 SO.300

♦ Accurate (±±5% ꢀndependent On-Board Oscillators

for Lamp Frequency (40kHz to 80kHz% and DPWM

Burst Dimming Frequency (22.±Hz to 440Hz%

+Denotes lead-free package.

♦ Can Be Synchronized to External Sources for the

Pin Configurations

Lamp and DPWM Frequencies

♦ <105 to 1005 Dimming Range

TOP VIEW

♦ Programmable Soft-Start Minimizes Audible

LOSC

28 LSYNC

27 FAULT

26 SCL

Transformer Noise

♦ ꢀ²C-Compatible Serial Port and On-Board

Nonvolatile (NV% Memory Allow Device

Customization

PSYNC

POSC

BRIGHT

SVM

25 SDA

24 OVD4

♦ 8-Byte NV User Memory for Storage of Serial

Numbers and Date Codes

23 LCM4

DS3984

♦ 4.±V to ±.±V Single-Supply Operation

♦ -40°C to +8±°C Temperature Range

GA1

22 GB4

21 GA4

20 OVD3

19 LCM3

18 GB3

17 GA3

GB1

LCM1

♦ 32-Lead TQFP (7mm x 7mm% Package or

OVD1 10

GA2 11

28-Pin SO (300 mils% Package

GB2 12

I C is a trademark of Philips Corp. Purchase of I C compo-

nents from Maxim Integrated Products, Inc., or one of its subli-

censed Associated Companies, conveys a license under the

LCM2 13

OVD2 14

15 GND

Philips I C Patent Rights to use these components in an I C

system, provided that the system conforms to the I C Standard

Specification as defined by Philips.

28-SO-300

Pin Configurations continued at end of data sheet.

Typical Operating Circuit appears at end of data sheet.

______________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...24

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与DS3984T相关器件

型号	品牌	获取价格	描述	数据表
DS3984T+	DALLAS	获取价格	4-Channel Cold-Cathode Fluorescent Lamp Controller
DS3984T+T&R	MAXIM	获取价格	Fluorescent Light Controller, 80kHz Switching Freq-Max, 7 X 7 MM, 1 MM HEIGHT, LEAD FREE,
DS3984Z	DALLAS	获取价格	4-Channel Cold-Cathode Fluorescent Lamp Controller
DS3984Z+	DALLAS	获取价格	4-Channel Cold-Cathode Fluorescent Lamp Controller
DS3984Z+T&R	MAXIM	获取价格	Fluorescent Light Controller, 80kHz Switching Freq-Max, PDSO28, 0.300 INCH, LEAD FREE, SOP
DS3988	MAXIM	获取价格	8-Channel Cold-Cathode Fluorescent Lamp Controller
DS3988T	MAXIM	获取价格	8-Channel Cold-Cathode Fluorescent Lamp Controller
DS3988T+	MAXIM	获取价格	8-Channel Cold-Cathode Fluorescent Lamp Controller
DS3988T+T&R	MAXIM	获取价格	Power Factor And Fluorescent Light Controller, 80kHz Switching Freq-Max, PQFP48, 7 X 7 MM,
DS3991	MAXIM	获取价格	Low-Cost CCFL Controller

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