The PT7716 ExcaliburTM power module is a 20-A integrated switching regulator (ISR) housed a 27-pin space-saving copper package. Operating from a 3.3V-input bus, the PT7716 produces a tightly regulated supply voltage that is programmable over the range, 1.075V to 1.85V. The output voltage is selected via a 5-bit code. The code adjusts the output voltage in steps of 25mV and is VRM 9.0 compatible. This regulator is ideally suited for applications that employ microprocessor and DSP products that require core supply voltages as low as 1.075V.