The PI3740 is the newest buck-boost regulator in the series. This series offers very wide input and output operation, including universal operation from 12 V, 24 V, or 48 V battery sources. They can delivery up to 140 W at up to 96% efficiency. In addition to the standard functionality available with other PI374x parts, the PI3740 also offers constant-current mode operation for lighting or battery charging applications.