NCP731 Linear Regulators (LDO) from DigiKey

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onsemi's NCP731 device is based on a unique feature combination of very low noise, low quiescent current, fast transient response, and high ‎input and output voltage ranges. The NCP731 LDO regulator is designed for up to 38 V input voltage and 150 mA output current. ‎Very low noise (8 µVRMS) makes this device an ideal solution for applications where clean voltage rails are critical for system ‎performance (power operational amplifiers, analog-to-digital/digital-to-analog converters, and other precision analog circuitry). The ‎device (version B) implements power good circuit (PG), indicating that output voltage is regulated. This signal could be used for ‎power sequencing or as a microcontroller reset. Internal short circuit and overtemperature protections save the device from overload ‎conditions‎.

Features

Operating input voltage range: 2.7 V to 38 V
Output voltage adjustable range: 1.2 V to 35 V
Very low noise: 8 µV_RMS (10 Hz to 100 kHz)
Low quiescent current: 48 µA typ.
Low dropout: 230 mV typ. at 150 mA

Output voltage accuracy: ±0.6%
PG output with programmable delay (version B)
Stable with small 1 µF ceramic capacitors
Soft start input pin

Applications

Supply rails for OpAmps, ADCs, DACs, and other precision analog circuitry, and audio
Post DC/DC converter regulation and ripple filtering
Test and measurement