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L1923 - 500mA HIGH PSRR LDO REGULATORS

General Description

The UTC L1923 is a low supply current, low dropout linear regulator.

It is operating at 2.5V - 5.5V.

load condition.

In the shutdown mode, the maximum supply current is less than 1μA.

Key Features

  • Low No-Load Supply Current: 90µA.
  • Guaranteed 500mA Output Current.
  • Dropout Voltage is 200mV @ 250mA Load.
  • OTP(Over-Temperature Protection) and Short-Circuit Protection.
  • Two Modes Of Operation: Fixed Mode：3.3V，3.5V，3.9V Adjustable Mode: 1.25V - 5.5V.
  • Maximum Supply Current In Shutdown Mode is Less than 1µA.
  • Low Output Noise at 238µVRMS.
  • Stability with Lost Cost Ceramic Capacitors.

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Full PDF Text Transcription (Reference)

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UNISONIC TECHNOLOGIES CO., LTD L1923 Preliminary CMOS IC 500mA HIGH PSRR LDO REGULATORS „ DESCRIPTION 4 5 2 3 The UTC L1923 is a low supply current, low dropout linear regulator. It is operating at 2.5V - 5.5V. The supply current is as low as 55μA in the no–load condition. In the shutdown mode, the maximum supply current is less than 1μA. A built-in over-temperature protection circuit is designed to protect the device from being damaged by thermal overload. The over-current protection limit is set at 800mA (TYP.) The UTC L1923 can be operated on the following two modes. When the SET pin is connected to ground, the output of L1923 is a pre-set value and the external components are not needed to decide the output voltage.