Are there any other names for PWM D171 3-pin IC?

[sugan]

Hi,
My computer was generating few problems and i gave it for repair.
I was told that the signal from CPU to the monitor was not proper. They also told me to buy PWM D171 3 pin IC. It's not available. Does anyone have the specification document for that IC? Are there any other name for PWM D171 3-pin IC? Are there any other names for PWM D171 3-pin IC?

Thanks in advance.