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Demonstration circuit 1989B-A is a high efficiency, high density, μModule regulator with 4.5V to 17V input range. The output voltage is adjustable from 0.5V to 4V, and it can supply 50A maximum load current. The demo board has two LTM4676A μModule regulators, and the LTM4676A is a dual 13A or single 26A step-down regulator with PMBus power system management. Please see LTM4676A data sheet for more detailed information.