最近用到電磁式蜂鳴器,由於電源部分處理的不好,對電流的實時大小要有很明確的數值,平時用的萬用表就派不上用場了,只好找了一款電流檢測IC-Max471。
MAX471 是一款精密高端的電流檢測放大器,在很多應用場景下都可以用的到,如電池/DC電源供電的系統中可以見到。
MAX471主要有一下特性:
© Complete High-Side Current Sensing
© Precision Internal Sense Resistor (MAX471)
© 2% Accuracy Over Temperature
© Monitors Both Charge and Discharge
© 3A Sense Capability with Internal Sense Resistor
(MAX471)
© Higher Current-Sense Capability with External
Sense Resistor (MAX472)
© 100µA Max Supply Current
© 18µA Max Shutdown Mode
© 3V to 36V Supply Operation
© 8-Pin DIP/SO Packages
下面直接就是典型應用電路: