I want to use a contant current source to charge 2 NiMH batteries (1.2V each) which are connected in series, using 5V input voltage. I want to control the charging current using PWM of the frequency 100 HZ from microcontroller. Please reply me with the circuit....
I can use this IC's for NiMH charging. But my requirement is to build a constant current source using transistor and to vary the output current using pulse width. I am using PIC microcontroller in my application. So i am using same PIC to sense the battery voltage, according battery voltage i like to vary the charging current. If i get any IC, in which output current can be controlled by PWM, is OK.