W83301R

The W83301R is an ACPI-compliant controller for microprocessor and other computer applications. In substance, the part can mainly operate in alternative configurations mode A and B mode A provides a switch controller to generate a 5VDL voltage from ATX power supply, a linear controller STR1 (2.5V_DUAL), and a bus termination controller 1.25 V_DUAL for high speed bus such as RDRAM/DDRAM current sinking and sourcing; and mode B provides a switch controller to generate a 5VDL voltage from ATX power supply and three linear controllers for specific voltage regulations that is STR1 (2.5V_DUAL), STR2 (3.3V_DUAL) and STR3 (1.8 V_DUAL), all of the outputs can simply configured by V_SET0, V_SET1. Besides, the W83301R also can provide extra voltage up to 0.2V in each regulator output for more performance. In order to reduce the customer's cost, and simplify the circuit design, the W83301R integrates a charge-pump engine into the chip to provide higher driving voltage for single N-channel MOSFETs, that is the W83301R, can drive only N-channel MOSFETs for all applications. In the other hand, the W83301R also offer PWOK and over current detection to protect each output and soft-start protects all linear controllers from rush current attack. The W83301R is available in a 20-pin SOP package.