NCP731 Linear Regulators (LDO)
onsemi's NCP731 LDO regulator, 150 mA, 38 V, 8 µVrms low noise, with enable and external soft start
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.
- Operating input voltage range: 2.7 V to 38 V
- Output voltage adjustable range: 1.2 V to 35 V
- Very low noise: 8 µVRMS (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
- Supply rails for OpAmps, ADCs, DACs, and other precision analog circuitry, and audio
- Post DC/DC converter regulation and ripple filtering
- Test and measurement
- Industrial instrumentation
- Metering
- HVAC and industrial sensors
- Material handling
- Telecom
