LM3405 - 1A Constant Current Buck Regulator

Name: LM3405
SKU: LM3405-571180

National Semiconductor

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Datasheet Details

Part number	LM3405
Manufacturer	National Semiconductor
File Size	473.17 KB
Description	1A Constant Current Buck Regulator
Datasheet	LM3405_NationalSemiconductor.pdf

LM3405 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 |