Datasheet > LX1689_06

LX1689_06

更新时间： 2024-11-11 11:40:51

品牌	Logo	应用领域
美高森美 - MICROSEMI		控制器
页数	文件大小	规格书
14页	297K
描述
Third Generation CCFL Controller

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LX1689_06 数据手册

LX1689

Third Generation CCFL Controller

PRODUCTION DATA SHEET

KEY FEATURES

DESCRIPTION

The LX1689 is the latest generation

The brightness control input allows the

3 to 28 Volt Single Fixed (±20%)

Supply Operating Range

Selectable Analog/Digital

Dimming Modes

Digital Dimming Can Synch to

External Or Internal Clocks

User Programmable Digital

Dimming Burst Frequency

252 mS Power On Delay

Flexible Lamp Current

Compensation Input

Open Lamp Shutdown and Fault

Output Indicator

“On Chip” Full Wave Lamp

Current & Voltage Rectifiers

Direct Drive CCFL (Cold Cathode use of either a DC voltage or a PWM

Fluorescent Lamp) Controller. It uses input to simplify design. Programmable

new circuit design techniques (patents polarity brightness control is retained,

pending) and combines digital and linear except in the case of externally clocked

circuits with an advanced BiCMOS digital dimming. Two onboard LDO

process to create a more complete regulators extend the input voltage range

controller in a small package.

When compared to the original external circuitry as was required with our

LX1686 design, identical module previous controllers. The LX1689

of the IC up to 28 Volts without using

applications use from 12 to 30 less includes a new lamp strike detection

components. New functions and scheme that saves a package pin and three

enhancements have been added to make external components. Internal circuits

20 Pin TSSOP Package

the LX1689 even easier to use.

monitor lamp current pulses at the I_SNS

The on-chip PLL circuit used to input to determine if the lamp strikes and

synchronize the digital dimming burst if it stays ignited once operational.

BENEFITS

frequency to the video frame rate, as

Integrating full wave rectifiers for

Low Component Count /

Module Cost / Size

High “Nits/Watt” Efficiency

Operates Directly From 1 to 6

Li_Ion Cells

used in the LX1686, is replaced with a each of three lamp inputs has significantly

programmable counter. This counter can reduced the lamp feedback component

divide the video controller horizontal count. In addition the controller features

sync pulse, other external clock source include auto shutdown for open or broken

or the internal chip clock source to lamps, and a lamp fault detection with a

Lamp Current Compensation

Input Makes Indoor/Outdoor

And Wide Temperature Range

Applications Easy to Design

generate the burst frequency.

status reporting output.

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

Protected By U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; Patents Pending

PRODUCT HIGHLIGHT

LX1689 CCFL Inverter Layouts Examples*

2.64in. (67mm)

Bill of Materials

.397 in.

(10mm)

LX1689CPW

Transformer

Dual FET

Actual Inverter Size

1.38in. (35mm)

Connectors

Resistors

.870 in.

(22mm)

Capacitors

Total Count

Actual Inverter Size

*As Shown in Figure 1 (Typical Application)

PACKAGE ORDER INFO

Plastic TSSOP

MIN V_DD

MAX V_DD

T_J(°C)

PW 20-PIN

RoHS Compliant / Pb-free Transition DC: 0442

LX1689CPW

0 to 70

-40 to 85

28V

LX1689IPW

Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1689CPW-TR)

Rev. 1.1, 2006-02-27

Microsemi

Integrated Products

Page 1

11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570

12 3 4 5 6 7...14

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与LX1689_06相关器件

型号	品牌	获取价格	描述	数据表
LX1689CPW	MICROSEMI	获取价格	Third Generation CCFL Controller
LX1689CPWT	MICROSEMI	获取价格	Fluorescent Light Controller, 500kHz Switching Freq-Max, BICMOS, PDSO20, PLASTIC, TSSOP-20
LX1689IPW	MICROSEMI	获取价格	Third Generation CCFL Controller
LX1689IPWT	MICROSEMI	获取价格	Fluorescent Light Controller, 500kHz Switching Freq-Max, BICMOS, PDSO20, PLASTIC, TSSOP-20
LX1689IPW-TR	MICROSEMI	获取价格	暂无描述
LX1691	MICROSEMI	获取价格	Enhanced Multi-Mode CCFL Controller
LX1691A	MICROSEMI	获取价格	Enhanced Multi-Mode CCFL Controller
LX1691AIPW	MICROSEMI	获取价格	Enhanced Multi-Mode CCFL Controller
LX1691AIPW-TR	MICROSEMI	获取价格	Fluorescent Light Controller, 0.1A, 250kHz Switching Freq-Max, PDSO16, LEAD FREE, PLASTIC,
LX1691B	MICROSEMI	获取价格	Enhanced Multi-Mode CCFL Controller

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