Product Description

The ON Semiconductor’s SmartOR CMPWR101 is a low dropout regulator that delivers up to 250 mA of load current at a fixed 3.3 V output. An internal threshold level (typically 4.1 V) is used to prevent the regulator from being operated below dropout voltage. The device continuously monitors the input supply and will automatically disable the regulator when VCC falls below the threshold level. When the regulator is disabled, a low impedance, fully integrated switch is enabled which allows the output to be directly powered from an auxiliary 3.3 V supply.

Features

• Automatic Detection of VCC Input Supply

• Glitch−Free Output During Supply Transitions

• Built−In Hysteresis During Supply Selection

• 250 mA Output Maximum Load Current

• Fully Integrated VAUX Switch

• Overload Current Protection

• Short Circuit Current Protection

• Operates from Either VCC or VAUX

• 8−Pin SOIC Package

• These Devices are Pb−Free and are RoHS Compliant

Applications

• PCI Adapter Cards

• Network Interface Cards (NICs)

• Dual Power Systems

• Systems with Standby Capabilities

CMPWR101属于集成电路（IC） > 线性 + 开关稳压器。安森美半导体公司制造生产的CMPWR101稳压器 - 线性线性稳压器用于提供稳定的输出电压，无论负载电流、输入电压或环境因素如何变化，这些输出电压通常都要保持不变。它们的工作原理要求输入电压维持在高于所需的输出电压，而且要超出某个最小量，并且在工作时会将输入端的任何多余电压转换为热量。对于大多数应用而言，虽然这种稳压器的效率低于开关模式的稳压器，但它们通常更适合对噪声高度敏感的应用。