LM3404MA+ National Semiconductor, LM3404MA+ Datasheet

LM3404MA+

Manufacturer Part Number

LM3404MA+

Description

Manufacturer

National Semiconductor

Datasheets

1.LM3404MA.pdf (24 pages)

2.LM3404HVMAX.pdf (24 pages)

Specifications of LM3404MA+

Notes

NEW

Date_code

10+

Current page: 1 of 24
Download datasheet (564Kb)

LM3404/04HV

1.0A Constant Current Buck Regulator for Driving High

Power LEDs

General Description

The LM3404/04HV are monolithic switching regulators de-

signed to deliver constant currents to high power LEDs. Ideal

for automotive, industrial, and general lighting applications,

they contain a high-side N-channel MOSFET switch with a

current limit of 1.5A (typical) for step-down (Buck) regulators.

Hysteretic controlled on-time and an external resistor allow

the converter output voltage to adjust as needed to deliver a

constant current to series and series-parallel connected LED

arrays of varying number and type. LED dimming via pulse

width modulation (PWM), broken/open LED protection, low-

power shutdown and thermal shutdown complete the feature

set.

Typical Application

202054

Features

■

Applications

■

Integrated 1.0A MOSFET

1.2A Output Current Over Temperature

Cycle-by-Cycle Current Limit

No Control Loop Compensation Required

Separate PWM Dimming and Low Power Shutdown

Supports all-ceramic output capacitors and capacitor-less

outputs

Thermal shutdown protection

SO-8 Package, PSOP-8 Package

LED Driver

Constant Current Source

Automotive Lighting

General Illumination

Industrial Lighting

Range 6V to 42V (LM3404)

Range 6V to 75V (LM3404HV)

20205401

December 2, 2008

www.national.com

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