LM3405 - 1A Constant Current Buck Regulator

Product Overview

National Semiconductor

Datasheet Details

Part number	LM3405
Manufacturer	National Semiconductor
File Size	473.17 KB
Description	1A Constant Current Buck Regulator
Datasheet	LM3405 Datasheet
Additional preview pages of the LM3405 datasheet.

Product details

Description

Integrated with a 1A power switch, the LM3405 is a current mode control switching buck regulator designed to provide a simple, high efficiency solution for driving LEDs.

Features

include user accessible enable/ dim pin for enabling and PWM dimming of LEDs, thermal shutdown, current limit and over voltage protection. Features n Thin SOT23-6 package n 4.0V to 20V input voltage range n 550kHz (LM3405Y) and 1.6MHz (LM3405X) switching frequencies n 300mΩ NMOS switch n 30nA shutdown current n Enable/DIM input for enabling and PWM dimming of LEDs n Requires only low value, ceramic capacitors n Input voltage UVLO n Internally compensated current mode control n Thermal shutdown.

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Published: Feb 9, 2007 |