LDOs extend battery life in wireless devices
1 min read
Analog Devices has introduced four low dropout regulators (LDOs) that it claims address the size, power dissipation and power supply rejection requirements of wireless mobile devices.
The ADP160, ADP161, ADP162 and ADP163 ultra low quiescent current LDOs are designed to extend the battery life of portable devices by drawing only 560nA (typical) at no load and 42µA of quiescent current (typical) at full load.
The LDOs provide 70dB power supply rejection ratio (psrr) at 60Hz, which, according to ADI, is more than twice that of competing LDOs at full load current. The LDOs are designed for applications such as power meter reader/data terminals, portable industrial, medical measurement devices and remotely located equipment operating from batteries or solar power.
"Using innovative design techniques, the ADP16x LDO series provides both ultra low quiescent current and superior power supply rejection performance for digital and rf applications," said Walt Heinzer, product line manager, Power Management Group, Analog Devices. "These new LDOs are optimised for use with small, 1µF ceramic capacitors and will meet the requirements of high performance, space constrained designs."
