LDOs offer reduced power consumption and improved noise performance

According to ON, the cmos devices utilise the latest technology to deliver reduced power consumption, improved noise performance and a choice of small form factor packages. Potential applications include entertainment systems and portable lithium-ion coin cell powered equipment. The first of the new ranges comprises the 50 and 150mA NCP4640 and NCP4641 devices. These have an input voltage range of 4 to 36V and a maximum input voltage tolerance of 50V. ON claims they have a low quiescent current of 9µA to help reduce power consumption when the devices are idle. Both are offered as standard in a SOT-89-5 package with a SOIC-6-TL power package available on request. Also available are the 150 and 300mA NCP4620 and NCP4625 devices. Both are optimised to deliver excellent ripple injection and low quiescent current values. In addition, the NCP4629 is a 500mA regulator with an input voltage range of 4 to 24V and a maximum input tolerance of 36V. An Enable pin allows the device to be placed in a power saving standby mode, while a wide operating temperature range of -40 to 105°C makes it suitable for high power industrial applications. It comes in a thermally efficient DPAK-5 package. "We are pleased to introduce these devices in the ultra small, ultra thin XDFN package style that helps designers address the demand for increasing amounts of functionality in smaller equipment housings," said Mike Paquette, director of ON Semiconductor's regulation business unit.