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LM3402 Datasheet 0.5-a Constant Current Buck Regulator

Manufacturer: Texas Instruments

Overview: Product Folder Sample & Buy Technical Documents Tools & Software Support & Community LM3402, LM3402HV SNVS450F – SEPTEMBER 2006 – REVISED OCTOBER 2015 LM3402/HV 0.

General Description

The LM3402/HV 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 Nchannel MOSFET switch with a current limit of 735 mA (typical) for step-down (Buck) regulators.

Hysteretic control with controlled ON-time coupled with an external resistor allow the converter output voltage to adjust as needed to deliver a constant current to series and series - parallel connected arrays of LEDs of varying number and type, LED dimming by pulse width modulation (PWM), broken/open LED protection, low-power shutdown and thermal shutdown complete the

Key Features

  • 1 Integrated 0.5-A N-channel MOSFET.
  • VIN Range from 6 V to 42 V (LM3402).
  • VIN Range from 6 V to 75 V (LM3402HV).
  • 500 mA 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.
  • VSSOP, SO PowerPAD™ Packages 2.

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Similar Datasheet

Brand Logo Part Number Description Manufacturer
National Semiconductor Logo LM3402 0.5A Constant Current Buck Regulator National Semiconductor
National Semiconductor Logo LM3402HV 0.5A Constant Current Buck Regulator National Semiconductor

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