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50mA low-dropout linear voltage regulator

ON Semiconductor has introduced the NCP508, a low-current voltage regulator that offers an efficient and economical solution to generate a low power voltage rail. The new regulator provides a solution that supports low power, space-efficient and cost-effective designs in applications such as touch screens, keypads, smart phones, portable meters, printers, and remote controls. The device can drive currents in excess of 50mA and is housed in a compact SC-88A package with a footprint measuring 2.2x2.2mm with an overall height of 1.10mm. The new device offers high ripple rejection of 70dB typical (at 1kHz) that makes it an effective filter for voltage supplies. High noise performance of 40µVrms (at 1.5V) contributes to a clean output voltage, and when disabled a current consumption of less than 1µA helps to further extend battery life in portable equipment. Low voltage dropout performance of 140mV at 30mA load provides flexibility in designing auxiliary power rails. A switch on time of less than 20µs allows designers to maximise energy savings by powering down the device when the functionality it supports is not in use. The device has a maximum operating voltage of 7V and it can withstand high voltage transients of up to 13V. Standard output voltage versions of 1.5, 1.8, 2.5, 2.8, and 3.3V are offered with other voltage values available in 100mV steps.