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LD3985 - ULTRA LOW DROP-LOW NOISE BICMOS VOLTAGE REGULATORS

General Description

The LD3985 provides up to 150 mA, from 2.5 V to 6 V input voltage.

The ultra low drop voltage, low quiescent current and low noise make it suitable for low power applications and in battery-powered systems.

Regulator ground current increases slightly in dropout only, prolonging the battery life.

Key Features

  • Input voltage from 2.5 V to 6 V.
  • Stable with low ESR ceramic capacitors.
  • Ultra low-dropout voltage (60 mV typ. at 150 mA load, 0.4 mV typ. at 1 mA load).
  • Very low quiescent current (85 µA typ. at no load, 170 µA typ. at 150 mA load; max.1.5 µA in OFF mode).
  • Guaranteed output current up to 150 mA.
  • Wide range of output voltages: 1.22 V; 1.8 V; 2.5 V; 2.7 V; 2.8 V; 2.9 V; 3 V; 3.3 V; 4.7 V.
  • Fast turn-on time: typ. 200 µs [CO = 1 µF, CB.

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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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LD3985 Ultra low drop and low noise BiCMOS voltage regulators 627/ Features • Input voltage from 2.5 V to 6 V • Stable with low ESR ceramic capacitors • Ultra low-dropout voltage (60 mV typ. at 150 mA load, 0.4 mV typ. at 1 mA load) • Very low quiescent current (85 µA typ. at no load, 170 µA typ. at 150 mA load; max.1.5 µA in OFF mode) • Guaranteed output current up to 150 mA • Wide range of output voltages: 1.22 V; 1.8 V; 2.5 V; 2.7 V; 2.8 V; 2.9 V; 3 V; 3.3 V; 4.7 V • Fast turn-on time: typ.