The APW7037/A controller IC is designed to provide a low cost synchronous Buck regulator for on-board DC to DC converter applications. The APW7037 together with dual N-channel MOSFETs such as APM7313, provide a low cost solution for such applications. This device features an internal 200KHz oscillator (400KHz for "A" version), Power-On-Reset (POR) for both VCC and VC supplies, an external programmable soft-start function as well as output under-voltage detection that latches off the device when an output short is detected.