The LM5025A is a functional variant of the LM5025 active clamp PWM controller. The functional differences of the LM5025A are: The CS1 and CS2 current limit thresholds have been increased to 0.5V. The internal CS2 filter discharge device has been disabled and no longer operates each clock cycle. The internal VCC and VREF regulators continue to operate when the line UVLO pin is below threshold.