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LM3433 Datasheet Common Anode Capable High Brightness Led Driver

Manufacturer: Texas Instruments

Overview: LM3433 www.ti.com SNVS535C – OCTOBER 2007 – REVISED MAY 2013 LM3433 Common Anode Capable High Brightness LED Driver with High Frequency Dimming Check for Samples:.

General Description

The LM3433 is an adaptive constant on-time DC/DC buck (step-down) constant current controller (a true current source).

The LM3433 provides a constant current for illuminating high power LEDs.

The output configuration allows the anodes of multiple LEDs to be tied directly to the ground referenced chassis for maximum heat sink efficacy.

Key Features

  • 1.
  • 2 Operating Input Voltage Range of -9V to -14V w. r. t. LED Anode.
  • Control Inputs Referenced to the LED Anode.
  • Output Current Greater than 6A.
  • Greater than 30kHz PWM Frequency Capable.
  • Negative Output Voltage Capability Allows LED Anode to be Tied Directly to Chassis for Maximum Heat Sink Efficacy.
  • No Output Capacitor Required.
  • Up to 1MHz Switching Frequency.
  • Low IQ, 1mA Typical.
  • Soft Start.
  • Adaptive Progra.

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