The PT7711 ExcaliburTM power module is a 20-A integrated switching regulator (ISR) housed a 27-pin space-saving copper package. Operating from a +5V input bus, the PT7711 produces a tightly regulated output voltage that is programmable over the range, 1.3V to 3.5V. The output voltage is selected via 5-bit input code, which is compatible with the VRM specifications defined by Intel. This regulator is most suitable for microprocessor and DSP applications requiring core or I/O logic supply voltages as low as 1.3V. The PT7711 regulator incorporates output short-circuit protection, and a differential remote sense to compensate for voltage drop between the regulator and load.