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MAX1574 - 180mA / 1x/2x / White LED Charge Pump in 3mm x 3mm TDFN

Key Features

  • Up to 180mA (60mA/LED) Drive Capability.
  • 83% Average Efficiency (PLED / PBATT) Over Li+ Battery Discharge.
  • 0.5% (typ) LED Current Matching.
  • Adaptive 1x/2x Mode Switchover.
  • Low Input Ripple and EMI.
  • 5% to 100% Dimming Through Single-Wire Serial Pulse Interface.
  • Low 0.1µA Shutdown Current.
  • 2.7V to 5.5V Supply Voltage Range.
  • Soft-Start Limits Inrush Current.
  • Output Overvoltage Protection.
  • Thermal-Shu.

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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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19-3117; Rev 0; 12/03 KIT ATION EVALU E L B AVAILA 180mA, 1x/2x, White LED Charge Pump in 3mm x 3mm TDFN General Description Features ♦ Up to 180mA (60mA/LED) Drive Capability ♦ 83% Average Efficiency (PLED / PBATT) Over Li+ Battery Discharge ♦ 0.5% (typ) LED Current Matching ♦ Adaptive 1x/2x Mode Switchover ♦ Low Input Ripple and EMI ♦ 5% to 100% Dimming Through Single-Wire Serial Pulse Interface ♦ Low 0.1µA Shutdown Current ♦ 2.7V to 5.5V Supply Voltage Range ♦ Soft-Start Limits Inrush Current ♦ Output Overvoltage Protection ♦ Thermal-Shutdown Protection ♦ 10-Pin 3mm x 3mm TDFN Package MAX1574 The MAX1574 charge pump drives up to three white LEDs with regulated constant current for uniform intensity.