Datasheet > OB3309

OB3309

更新时间： 2024-10-14 07:07:55

品牌	Logo	应用领域
其他 - ETC		控制器
页数	文件大小	规格书
12页	402K
描述
Highly Integrated U Type CCFL Backlight Controller

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中文翻译

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OB3309 数据手册

OB3309

Highly Integrated U Type CCFL Backlight Controller

Product Specification

FEATURES

GENERAL DESCRIPTION

High performance push pull topology

Optimized for U type CCFL solution

Adjustable dimming polarity

OB3309 is

highly integrated and high

performance U-type Cold Cathode Fluorescent

Lamp (CCFL) controller optimized for LCD display

backlight application. Comprehensive protection

functions are integrated, thus it provides a cost

effective yet high reliability LCD backlight solution.

Adjustable striking frequency & time

Flexible Dimming mode Control:

| Analog dimming control

Operating in push pull configuration, OB3309

converts DC input voltage to the pure sinusoidal

voltage and current waveforms, to ignite and

operate CCFL lamps.

| Internal burst dimming control

| External burst (LPWM) dimming control

Adjustable minimum duty for internal burst

dimming

It provides a high degree of design flexibility by

offering great programmability for key parameters

which include operating frequency, striking

frequency, striking time, dimming polarity, burst

dimming frequency, soft-start time, and soft on/off

time for burst dimming.

Adjustable minimum reference voltage for

analog dimming

0-2V DC voltage direct dimming control

without external circuits

Comprehensive Protection Coverage:

| Output over voltage protection (OVP)

| Output over current protection (OCP)

Various dimming modes control and dimming

polarity programmability are offered. Both internal

burst and external low frequency PWM (LPWM)

dimming methods are available for a wide range of

dimming control. Analog dimming is also provided

through external DC input control to achieve wide

dimming range.

| Open lamp protection and short lamp

protection

| Arcing protection

APPLICATIONS

The highly integrated OB3309 provides complete

protection features covering output over voltage,

over output current protection, lamp fail safe

function, and IC under voltage lockout.

LCD Monitor

LCD TV

Flat panel display

The OB3309 is available in SOP-16 Packages.

TYPICAL APPLICATION

VIN

DIM

ENA

DIM

STIME

CMP

ENA

DRC

BF/DMOD

POL

PRT

VDD

GATE1

GND

GATE2

+5V

OB3309

GND

Figure1. OB3309 Typical Application Schematic

Confidential

Preliminary Datasheet

OB_DOC_DS_330900

- 1 -

12 3 4 5 6 7...12

中文翻译

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与OB3309相关器件

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OB3316	ETC	获取价格	High Performance CCFL Controller
OB3362F	ETC	获取价格	The OB3362F is a highly integrated and high performance LED driver that optimized for LCD
OB3362FHP	ETC	获取价格	4 Channels High Performance LED Driver
OB3362FHPA	ETC	获取价格	4 Channels High Performance LED Driver
OB3362FRP	ETC	获取价格	4 Channels High Performance LED Driver
OB3362RP	ETC	获取价格	4 Channels High Performance LED Driver
OB3370N	ETC	获取价格	Cost Effective LED Controller
OB39R08A3U20	SYNCMOS	获取价格	SM39R08A3 8-Bit Micro-controller with 8KB+1KB ISP Flash & 512B RAM embedded
OB39R16A3U20	SYNCMOS	获取价格	SM39R16A3 内嵌 16KB 具有 ISP功能的 Flash 和 512B R
OB39R16A6U28	SYNCMOS	获取价格	39R16A6 内嵌 16KB 具有 ISP 功能的 Flash 和 1K+256B

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