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SP7121 - 2-Channel Adjustable Low Dropout High Side Linear LED Driver

General Description

The SP7121 LED driver provides a simple solution for a matched current source for any color common cathode LEDs.

The common cathode connection allows the user to increase the LED power dissipation by having the cathodes heat sinked to the ground plane of the circuit board.

Key Features

  • LED Driver for Common Cathode Parallel Connected LEDs.
  • Ultra Low Dropout Voltage of 300mV @ 25mA.
  • No EMI, no Switching Noise.
  • Integrated Current Matching.
  • PWM Brightness Control.
  • Enable/Shutdown Control.
  • Shu.

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January 2010 SP7121 2-Channel Adjustable Low Dropout High Side Linear LED Driver Rev. 2.0.0 GENERAL DESCRIPTION The SP7121 LED driver provides a simple solution for a matched current source for any color common cathode LEDs. The common cathode connection allows the user to increase the LED power dissipation by having the cathodes heat sinked to the ground plane of the circuit board. The SP7121 output current value is set by an external resistor. At shutdown mode (EN pin is LOW), the supply current drops to .04μA typical. The SP7121 is available in a small footprint RoHS compliant, lead-free and green/halogen free 6-pin SOT23 packages.