Datasheet4U Logo Datasheet4U.com

LM3406HV Datasheet 1.5a Constant Current Buck Regulator

Manufacturer: National Semiconductor (now Texas Instruments)

Overview: LM3406/06HV 1.5A Constant Current Buck Regulator for Driving High Power LEDs LM3406/06HV February 8, 2010 1.

This datasheet includes multiple variants, all published together in a single manufacturer document.

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.

Key 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.

LM3406HV Distributor