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ON Semiconductor

100mA LDO’s Low Quiescent Current Ideal in Battery-Powered Applications

ON Semiconductor’s NCP711 is a series of Low Dropout (LDO) regulators which are suitable for use in battery-powered, always-on applications because of their very low quiescent current and ability to handle a wide range of input voltages.

The NCP711, a CMOS LDO, is rated for a constant output current of up to 100mA from an input voltage ranging between 2.7V and 18V. The NCP711 is available in versions with a fixed output voltage of 3.0V, 3.3V or 5.0V, or with an adjustable output voltage of between 1.2V and 17V.

The NCP711 is ideal for use in regulating the input from a lithium-ion battery pack containing up to nine cells in series, to supply a load such as a microcontroller or analog circuit.

The NCP711A LDOs are supplied in a five-lead SOT-23 package. The NCP711B LDOs in a six-lead DFN package include a Power Good circuit which indicates that the output voltage is in regulation. This signal may be used for power sequencing, or for resetting a microcontroller.

All NCP711 regulators include internal short-circuit and over-temperature protection functions.

Features

  • 1µA quiescent current
  • 100nA shut-down current
  • 215mV drop-out voltage at 100mA output
  • ±1% output-voltage accuracy
  • Soft-start circuit
  • Stable with 1µF ceramic capacitors

Applications

  • Battery-powered equipment
  • Cordless power tools
  • Home automation
  • Metering
  • Remote controls
  • White goods