CMPWR150集成电路（IC）的线性+开关稳压器规格书PDF中文资料

CMPWR150属于集成电路（IC）的线性+开关稳压器。由安森美半导体公司制造生产的CMPWR150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。

Product Description

California Micro Devices SmartORTM CMPWR150 is a low dropout regulator that delivers up to 500mA of load current at a fixed 3.3V output. An internal threshold level (typically 4.1V) 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, the control signal “Drive” (Active Low) is enabled, which allows an external PMOS switch to power the load from an auxiliary 3.3V supply.

Features

• Automatic detection of VCC input supply

• Drive output logic to control external switch

• Glitch-free output during supply transitions

• 500mA output maximum load current

• Built-in hysteresis during supply selection

• Controller operates from either VCC or VOUT

• 8-pin SOIC Thermal or 5-pin TO-263 packages

Applications

• PCI adapter cards

• Network Interface Cards (NIC’s)

• Dual power systems

• Systems with standby capabilities

• See Application Note AP-211