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L5200 - REGULATED CHARGE PUMP DC/DC CONVERTERS

General Description

The UTC L5200-xx series are low noise, constant frequency charge pump DC/DC converters and designed to increase efficiency in white LED application.

The operating voltage range is 2.7V ~ VOUT input with up to 100mA of output current.

Key Features

  • Low Noise Constant Frequency Operation.
  • Output Current: 100mA.
  • 2MHz Switching Frequency.
  • 4.5V/5.0V Fixed Output Voltage.
  • VIN Range: 2.7V ~ VOUT.
  • Automatic Soft-Start.
  • No Inductors.
  • Less than 1µA of Shutdown Current.

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L5201 REGULATED CHARGE PUMP DC/DC CONVERTERS

Full PDF Text Transcription (Reference)

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UNISONIC TECHNOLOGIES CO., LTD L5200 LOW NOISE, REGULATED CHARGE PUMP DC/DC CONVERTERS 6 5 CMOS IC MSOP-8 4 DESCRIPTION The UTC L5200-xx series are low noise, constant frequency charge pump DC/DC converters and designed to increase efficiency in white LED application. The operating voltage range is 2.7V ~ VOUT input with up to 100mA of output current. Low external parts counts (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the UTC L5200-xx series ideally suited for small, battery-powered applications. A charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The UTC L5200-xx series have thermal shutdown capability to escape the device damaged from a continuous short-circuit.