Analog Devices has introduced the ADP160, ADP161, ADP162 and ADP163 LDOs to address the size, power dissipation and power-supply-rejection requirements of wireless mobile devices. The ultra-low-quiescent-current LDOs extend the battery life of portable devices by drawing 560 nA at no load and 42 μA of quiescent current at full load. They provide 70 dB power supply rejection ratio at 60 Hz. The LDOs are designed for applications such as power meter reader and data terminals, portable industrial, medical measurement devices and remotely located equipment operating from batteries or solar power. They provide up to 150mA of output current and operate from 2.2 to 5.5V supplies. The ADP160 and ADP162 fixed-output voltage and ADP161 and ADP163 adjustable-output voltage regulators are available in thin-small-outline transistor packages, whereas the ADP160 and ADP162 are additionally available in wafer-level, chip-scale package packages. The ADP160 and ADP161 also include an output switch to discharge the output load capacitor to 0V when the device is turned Off to ensure that microcontrollers are in a known state for restart. The LDOs also have an initial accuracy of ±1% to meet the needs of 1.8, 1.5 and 1.2V systems.
