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LM3406HV - 1.5A Constant Current Buck Regulator

This page provides the datasheet information for the LM3406HV, a member of the LM3406 1.5A Constant Current Buck Regulator family.

Datasheet Summary

Description

The LM3406/06HV are monolithic switching regulators designed 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 2.0A (typical) for step-down (Buck) regulators.

Features

  • Integrated 2.0A MOSFET.
  • VIN Range 6V to 42V (LM3406).
  • VIN Range 6V to 75V (LM3406HV).
  • True average output current control.
  • 1.7A Minimum Output Current Limit Over Temperature.
  • Cycle-by-Cycle Current Limit.
  • PWM Dimming with Dedicated Logic Input.
  • PWM Dimming with Power Input Voltage.
  • Simple Control Loop Compensation.
  • Low Power Shutdown.
  • Supports All-Ceramic Output Capacitors and Capacitor- less Outputs.
  • Thermal Shutdown Protection.

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Datasheet preview – LM3406HV

Datasheet Details

Part number LM3406HV
Manufacturer National Semiconductor
File Size 542.44 KB
Description 1.5A Constant Current Buck Regulator
Datasheet download datasheet LM3406HV Datasheet
Additional preview pages of the LM3406HV datasheet.

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Full PDF Text Transcription

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LM3406/06HV 1.5A Constant Current Buck Regulator for Driving High Power LEDs LM3406/06HV February 8, 2010 1.5A Constant Current Buck Regulator for Driving High Power LEDs General Description The LM3406/06HV are monolithic switching regulators designed 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 2.0A (typical) for step-down (Buck) regulators. Controlled on-time with true average current and an external current sense 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.
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