NCP731中文资料LDO Regulator, 150mA, 38 V, Low Noise, ADJ/FIX, with PG数据手册ONSEMI规格书

描述 Description

The NCP731 device is based on unique combination of features – very low noise, low quiescent current, fast transient response and high input and output voltage ranges. The NCP731 LDO regulator designed for up to 38 V input voltage and 150 mA output current. Very low noise (10 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) which indicates that output voltage is in regulation. This signal could be used for power sequencing or as a microcontroller reset.

Internal short circuit and over temperature protections saves the device against overload conditions.

特性 Features

• Operating Input Voltage Range: 2.7 V to 38 V
• Wide input voltage range
• Output Voltage Adjustable Range: 1.2 V to 35 V
• Wide output voltage range
• Very Low Noise: 10 µVRMS (10 Hz to 100 kHz)
• Ideal solution for applications where clean voltage rails are critical for system performance
• Low Quiescent Current: 50 µA typ.
• Low current consumption in no load state
• Low Dropout: 290 mV typ. at 150 mA
• Small Vin - Vout difference when low Voltage dropout & performance is required
• Output Voltage Accuracy ±0.6%
• Very good precision of output voltage
• Power Good Output with Programmable Delay (Version B)
• Additional feature for Vout monitoring
• Stable with Small 1 µF Ceramic Capacitors
• Reduced capacitor area
• Built−in Soft Start Circuit
• Suppresses Inrush Current

应用 Application

• MCU Analog Power Supply from Higher Voltage Rail
• Supply Rails for OpAmps, ADCs, DACs and other Precision Analog Circuitry
• Post DC-DC Converter Regulation and Ripple Filtering
• Test and Measurement
• Industrial Instrumentation
• RF Devices
• Smart Metering