CMPWR025集成电路（IC）的线性+开关稳压器规格书PDF中文资料

CMPWR025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CMPWR025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’ SmartOR™ CMPWR025 is a dual input power switch that selects between two different power inputs and delivers it to one output. The device integrates two very low impedance power switches and automatically implements an OR function that selects the higher of the two inputs. A hysteresis is built in (and is user selectable) to prevent switch chatter.

FEATURES

• Automatically selects VCC1 OR VCC2 input source

• Integrated low impedance switches (0.2Ω TYP)

• Operating supply range from 2.8V to 5.5V

• Glitch-free output during supply switching transitions

• Low operating supply current of 20µA (TYP)

• User-selectable hysteresis for supply selection

• 8-pin SOIC Narrow or 8-pin MSOP packages

APPLICATIONS

• PCI cards for Wake-On-LAN/Wake-On-Ring

• Dual power systems

• Systems with standby capabilities

• Battery backup systems

• See Application Note AP211