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TPS61042 - Constant Current LED Driver

Description

The TPS61042 is a high frequency boost converter with constant current output that drives white LEDs or similar.

The LED current is set with the external sense resistor (RS) and is directly regulated by the feedback pin (FB) that regulates the voltage across the sense resistor RS to 252 mV (typ).

Features

  • 1 Current Source With Overvoltage Protection.
  • Input Voltage Range: 1.8 V to 6 V.
  • Internal 30 V Switch.
  • Up to 85% Efficiency.
  • Precise Brightness Control Using PWM Signal or Analog Signal.
  • Switching Frequency: Up to 1 MHz.
  • Internal Power MOSFET Switch: 500 mA.
  • Operates With Small Output Capacitors Down to 100 nF.
  • Disconnects LEDs During Shutdown.
  • No Load Quiescent Current: 38 µA Typ.
  • Shutdown Current.

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TPS61043 Constant Current LED Driver

Full PDF Text Transcription

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Product Folder Sample & Buy Technical Documents Tools & Software Support & Community TPS61042 SLVS441D – DECEMBER 2002 – REVISED DECEMBER 2014 TPS61042 Constant Current LED Driver 1 Features •1 Current Source With Overvoltage Protection • Input Voltage Range: 1.8 V to 6 V • Internal 30 V Switch • Up to 85% Efficiency • Precise Brightness Control Using PWM Signal or Analog Signal • Switching Frequency: Up to 1 MHz • Internal Power MOSFET Switch: 500 mA • Operates With Small Output Capacitors Down to 100 nF • Disconnects LEDs During Shutdown • No Load Quiescent Current: 38 µA Typ • Shutdown Current: 0.
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