Datasheet > LM3430

LM3430

更新时间： 2024-11-23 04:18:51

品牌	Logo	应用领域
美国国家半导体 - NSC		控制器
页数	文件大小	规格书
24页	564K
描述
Boost Controller for LED Backlighting

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LM3430 数据手册

January 2007

LM3430

Boost Controller for LED Backlighting

General Description

Features

The LM3430 is a high voltage low-side N-channel MOSFET

controller. Ideal for use in a boost regulator, the LM3430 can

power the LED backlight in LCD panels, such as in notebook

PCs. It contains all of the features needed to implement single

ended primary topologies. Output voltage regulation is based

on current-mode control, which eases the design of loop com-

pensation while providing inherent input voltage feed-forward.

The LM3430 includes a start-up regulator that operates over

a wide input range of 6V to 40V. The PWM controller is de-

signed for high speed capability including an oscillator fre-

quency range up to 2 MHz and total propagation delays less

than 100 ns. Additional features include an error amplifier,

precision reference, line under-voltage lockout, cycle-by-cy-

cle current limit, slope compensation, soft-start, external syn-

chronization capability and thermal shutdown. The LM3430 is

available in the LLP-12 package.

Internal 40V Startup Regulator

■

1A Peak MOSFET Gate Driver

V_INRange 6V to 40V

Duty Cycle Limit in Excess of 90%

Programmable UVLO with Hysteresis

Cycle-by-Cycle Current Limit

External Synchronizable (AC-coupled)

Single Resistor Oscillator Frequency Set

Slope Compensation

■

Adjustable Soft-start

LLP-12 (3mm x 3mm)

Applications

LED Backlight Driver (companion to LM3432)

■

Boost Converter

SEPIC Converter

Typical Application

20209601

202096

www.national.com

12 3 4 5 6 7...24

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与LM3430相关器件

型号	品牌	获取价格	描述	数据表
LM3430_07	NSC	获取价格	LED Backlighting Solution with LM3430 and LM3432
LM3430SD	NSC	获取价格	Boost Controller for LED Backlighting
LM3430SDX	NSC	获取价格	Boost Controller for LED Backlighting
LM3431	TI	获取价格	具有集成升压控制器的 3 通道恒流 LED 驱动器
LM3431	NSC	获取价格	3-Channel Constant Current LED Driver with Integrated Boost Controller
LM3431_08	NSC	获取价格	3-Channel Constant Current LED Driver with Integrated Boost Controller
LM3431_09	NSC	获取价格	3-Channel Constant Current LED Driver with Integrated Boost Controller
LM343-100.00M	CONNOR-WINFIELD	获取价格	LVDS Output Clock Oscillator, 100MHz Nom, ROHS COMPLIANT, HERMETIC SEALED, CERAMIC PACKAGE
LM343-155.52M	CONNOR-WINFIELD	获取价格	5.0x7.0mm Surface Mount LVDS Clock Oscillator Series
LM3431A	NSC	获取价格	3-Channel Constant Current LED Driver with Integrated Boost Controller