RT6543B controller equivalent, high efficiency single synchronous buck pwm controller.
* A High Efficiency Step-Down DC-DC Controller
* Built-in 1% Reference Voltage
* 2-Bit Programmable Output Voltage with Integrated
* Adjustable Switching .
* Notebook Computers
* CPU/GPU Core Supply
* Chipset/RAM Supply
* Generic DC-DC Power Regulator
CS_DIS .
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