Precision Dual Voltage Regulator Controllers

The ADM1051/ADM1051A are dual, precision, voltage regulator controllers intended for power rail generation and active bus termination on personal computer motherboards. They contain a precision 1.2 V bandgap reference and two channels consisting of control amplifiers driving external power devices. Each channel has a shutdown input to turn off amplifier output and Hiccup Mode protection circuitry for the external power device. The shutdown input on the 1.5 V channel can also be used with the TYPEDET signal on a PC motherboard to select the output voltage.

* Two Independent Controllers on One Chip * 1.515 V and 1.818 V Outputs * Shutdown Inputs to Control Each Channel * Compatible with PC Motherboard TYPEDET Signal * ±2.5% Accuracy Over, Line, Load, and Temperature * Works with External N-Channel MOSFETs for Low Cost