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LM3405 Datasheet - National Semiconductor

LM3405_NationalSemiconductor.pdf

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Datasheet Details

Part number:

LM3405

Manufacturer:

National Semiconductor

File Size:

473.17 KB

Description:

1a constant current buck regulator.

LM3405, 1A Constant Current Buck Regulator

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.

With a 0.2V reference voltage feedback control to minimize power dissipation, an external resistor sets the current as needed for

LM3405 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 shutd

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