The MCP1755 and MCP1755S from Microchip are 16 volt, CMOS LDO voltage regulators with short circuit current foldback. While accepting an input voltage range of 3.6 V - 16 V and delivering 300 mA output current at output voltages of 1.8 V - 5.5 V, the regulators consume just 68 µA of quiescent current (typical). Additionally, the LDOs have a shutdown pin, enabling them to consume less than 0.1 µA (typical) during shutdown mode. These features, along with the devices’ compact footprint, aid in providing the flexibility necessary for a range of applications, such as automotive, medical, mobile devices and LED lighting controllers. With a 70 dB @ 1 kHz PSRR to filter input noise and provide cleaner output voltages, the LDOs are suited for noise-sensitive applications like GFCI and AFCI circuit breaker designs. Both LDOs are available today for sampling and volume production, starting at $0.45 each/5,000. The MCP1755S is offered in 3-pin SOT223 and 8-pin, 2x3 mm DFN packages, while the MCP1755 is available in 5-pin SOT223 and SOT23, as well as the 8-pin DFN.
LDOs Provide 300 mA, 16V and 70 dB Noise Rejection
16 volt, CMOS LDO voltage regulators with short circuit current foldback accept an input voltage range of 3.6 V - 16 V and deliver 300 mA output current at output voltages of 1.8 V - 5.5 V.