ZHCSIW6L October 2000 – October 2018 LM4040-N , LM4040-N-Q1
PRODUCTION DATA.
The LM4040 device is effectively a precision Zener diode. The part requires a small quiescent current for regulation, and regulates the output voltage by shunting more or less current to ground, depending on input voltage and load. The only external component requirement is a resistor between the cathode and the input voltage to set the input current. An external capacitor can be used on the input or output, but is not required.