The KA3525A is a monolithic integrated circuit that Includes all of the control circuits necessary for a pulse width modulating regulator. There are a voltage reference, an error amplifier, a pulse width modulator, an oscillator, an under-voltage lockout, a soft start circuit, and the output driver in the chip. Product Highlights: 5V 1% Reference Oscillator Sync terminal Internal Soft Start. Deadtime Control Under-Voltage Lockout