Datasheet > LM3410_08

LM3410_08

更新时间： 2024-09-15 04:44:27

品牌	Logo	应用领域
美国国家半导体 - NSC		驱动器
页数	文件大小	规格书
32页	712K
描述
PowerWise㈢ 525kHz/1.6MHz, Constant Current Boost and SEPIC LED Driver with Internal Compensation

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LM3410_08 数据手册

January 23, 2008

LM3410

PowerWise^®525kHz/1.6MHz, Constant Current Boost and

SEPIC LED Driver with Internal Compensation

General Description

Features

The LM3410 constant current LED driver is a monolithic, high

frequency, PWM DC/DC converter in 5-pin SOT23, 6-pin LLP,

& 8-pin eMSOP packages. With a minimum of external com-

ponents the LM3410 is easy to use. It can drive 2.8A typical

peak currents with an internal 170 mΩ NMOS switch. Switch-

ing frequency is internally set to either 525 kHz or 1.60 MHz,

allowing the use of extremely small surface mount inductors

and chip capacitors. Even though the operating frequency is

high, efficiencies up to 88% are easy to achieve. External

shutdown is included, featuring an ultra-low standby current

of 80 nA. The LM3410 utilizes current-mode control and in-

ternal compensation to provide high-performance over a wide

range of operating conditions. Additional features include

dimming, cycle-by-cycle current limit, and thermal shutdown.

Space Saving SOT23-5 & 6-LLP Package

■

Input voltage range of 2.7V to 5.5V

Output voltage range of 3V to 24V

2.8A Typical Switch Current

High Switching Frequency

■

525 KHz (LM3410-Y)

1.6 MHz (LM3410-X)

—

170 mΩ NMOS Switch

190 mV Internal Voltage Reference

■

Internal Soft-Start

Current-Mode, PWM Operation

Thermal Shutdown

Applications

LED Backlight Current Source

■

LiIon Backlight OLED & HB LED Driver

Handheld Devices

LED Flash Driver

Typical Boost Application Circuit

30038501

30038502

300385

www.national.com

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