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LM3406HV-Q1 Datasheet 1.5-a Constant Current Buck Regulator

Manufacturer: Texas Instruments

Overview: LM3406, LM3406HV, LM3406HV-Q1 SNVS512E – SEPTEMBER 2008 – REVISED MARCH 2014 LM3406 1.

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

General Description

The LM3406 family 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

  • 1 LM3406HV-Q1.
  • Automotive Grade Device.
  • AEC-Q100 Grade 1 Qualified.
  • Operating Ambient Temperature:.
  • 40°C to 125°C.
  • Integrated 2.0A MOSFET.
  • VIN Range 6V to 42V (LM3406).
  • VIN Range 6V to 75V (LM3406HV).
  • VIN Range 6V to 75V (LM3406HV-Q1).
  • True Average Output Current Control.
  • 1.7A Minimum Output Current Limit Over Temperature.
  • Cycle-by-Cycle Current Limit.
  • PWM Dimming with Dedicated Lo.

LM3406HV-Q1 Distributor