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TPS60230 - White LED Charge Pump Current Source

General Description

The TPS60230 charge pump is optimized for white LED supplies in backlit color display applications.

The device provides a constant current, set by an external resistor, for each LED.

Key Features

  • Regulated Output Current With 0.4% Matching.
  • Drives up to 5 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 With.

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TPS60231 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.

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TPS60230 www.ti.com SLVS516A – MAY 2004 – REVISED JUNE 2004 WHITE LED CHARGE PUMP CURRENT SOURCE WITH PWM BRIGHTNESS CONTROL FEATURES • Regulated Output Current With 0.4% Matching • Drives up to 5 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.