Datasheet > LM3407

LM3407

更新时间： 2024-09-30 04:44:27

品牌	Logo	应用领域
美国国家半导体 - NSC		转换器开关
页数	文件大小	规格书
16页	372K
描述
350 mA, Constant Current Output Floating Buck Switching Converter for High Power LEDs

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

LM3407 数据手册

January 18, 2008

LM3407

350 mA, Constant Current Output Floating Buck Switching

Converter for High Power LEDs

General Description

Features

The LM3407 is a constant current output floating buck switch-

ing converter designed to provide constant current to high

power LEDs. The device is ideal for automotive, industrial and

general lighting applications. The LM3407 has an integrated

power N-MOSFET that makes the application solution com-

pact and simple to implement. An external 1% thick-film re-

sistor allows the converter output voltage to adjust as needed

to deliver constant current within 10% accuracy to a serially

connected LED string of varying number and type. Converter

switching frequency is adjustable from 300 kHz to 1 MHz. The

LM3407 features a dimming input to enable LED brightness

control by Pulse Width Modulation (PWM). Additionally, a

separate enable pin allows for low power shutdown. An ex-

posed pad eMSOP-8 package provides excellent heat dissi-

pation and thermal performance. Input UVLO and output

open-circuit protection ensure a robust LED driver solution.

Input operating range 4.5V to 30V

■

Output voltage range: 0.1V_INto 0.9V_IN

Accurate constant current output

Cycle-by-Cycle current limit

Independent device enable (CMOS compatible) and PWM

dimming control

■

Converter switching frequency adjustable from 300 kHz to

1 MHz

■

No external control loop compensation required

■

Supports ceramic and low ESR output capacitors

Input Under Voltage Lock Out (UVLO)

Thermal shutdown protection

eMSOP-8 Package

■

Applications

LED Driver

■

Constant Current Source

Automotive Lighting

General Illumination

Industrial Lighting

■

Typical Application

30046635

300466

www.national.com

12 3 4 5 6 7...16

中文翻译

下载PDF

与LM3407相关器件

型号	品牌	获取价格	描述	数据表
LM3407_09	NSC	获取价格	350 mA, Constant Current Output Floating Buck Switching Converter for High Power LEDs
LM3407_11	TI	获取价格	LM3407 350 mA, Constant Current Output Floating Buck Switching Converter
LM3407_14	TI	获取价格	Evaluation Board Reference Design
LM3407MY	NSC	获取价格	350 mA, Constant Current Output Floating Buck Switching Converter for High Power LEDs
LM3407MY/NOPB	TI	获取价格	用于高功率 LED 的 350mA、恒流输出浮动降压开关转换器 \| DGN \| 8 \| -
LM3407MYX	NSC	获取价格	350 mA, Constant Current Output Floating Buck Switching Converter for High Power LEDs
LM3407MYX/NOPB	TI	获取价格	用于高功率 LED 的 350mA、恒流输出浮动降压开关转换器 \| DGN \| 8 \| -
LM3408DA	NXP	获取价格	IC VREG FIXED POSITIVE REGULATOR, MBFM2, TO-3, 2 PIN, Fixed Positive Single Output Standar
LM340-8DA	NXP	获取价格	IC VREG 8 V FIXED POSITIVE REGULATOR, MBFM2, TO-3, 2 PIN, Fixed Positive Single Output Sta
LM3408U	NXP	获取价格	IC VREG FIXED POSITIVE REGULATOR, PSFM3, TO-220, 3 PIN, Fixed Positive Single Output Stand