By the high-power switching power supply L4970A

As shown in FIG constitute grounds L4970A power switching power supply. L4970A is a high-power monolithic integrated switching regulator, the chip uses SIP-15 package, which is

characterized by; (1) Input voltage must be 11V, generally between 15 ~ 40V; (2) Output voltage: Fixed output 5.1V, may be provided through an external circuit to an adjustable output range of 5.1 ~ 40V; (3) the maximum output current of 10A; (4) Operating frequency 200kHz; (5) with internal voltage detection, brownout reset, soft-start and other special power stage circuits.

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