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TPS60231 - White LED Charge Pump Current Source

General Description

The TPS60231 charge pump is optimized for white LED supplies in color display backlight applications.

The device provides a constant current for each LED, which the initial value can be set by an external resistor.

Key Features

  • 1.
  • Regulated Output Current With 0.4% Matching.
  • Drives up to 3 LEDs at 25 mA Each.
  • LED Brightness Control Through PWM Control Signal.
  • High Efficiency by Fractional Conversion With 1x and 1.5x Modes.
  • 1 MHz Switching Frequency.
  • 2.7 V to 6.5 V Operating Input Voltage Range.
  • Internal Softstart Limits Inrush Current.
  • Low Input Ripple and Low EMI.
  • Overcurrent and Overtemperature Protected.
  • Undervoltage Lockout Wi.

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Other Datasheets by Texas Instruments

Part Number Description
TPS60230 White LED Charge Pump Current Source
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

View original datasheet text
TPS60231 www.ti.com SLVS544A – OCTOBER 2004 – REVISED FEBRUARY 2010 WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL Check for Samples: TPS60231 FEATURES 1 • Regulated Output Current With 0.4% Matching • Drives up to 3 LEDs at 25 mA Each • LED Brightness Control Through PWM Control Signal • High Efficiency by Fractional Conversion With 1x and 1.5x Modes • 1 MHz Switching Frequency • 2.7 V to 6.