I need a constant current of 5mA for my circuit operation. i have already derived constant current of about 25mA from PWM constant current generator IC for my wide range of input voltage. now i wanted to convert that 25mA to 5mA. How will i do that?
Since you haven't provided any real detail I cannot comment further, but you will have to create a suitable current sink for the other 20 mA, in parallel with your load.
I need a constant current generator of 5mA for the input voltage range of 85 to 265 VDC. i got an IC HV9921 from which i can generate 20mA constant current. but i need 5mA output only. how to do that?
pradeeba. You need to clarify further what your application for this is. It'll be easier for people to realize what you are trying to do and thus help you attain what you are looking for. Since without a context, simply stating that you need 30mA to 5mA and that you can't use a current divider doesnt get you far.