Low-Dropout (LDO), High-Current, and No-Bias Rail Reference Design for Industrial Applications

1 января 2018

TI Design TIDA-01322 demonstrates a low-noise, low-dropout (LDO), high-current power stage with no voltage-bias-rail requirement utilizing the LP5922 LDO linear regulator. The power stage demonstrated is ideal for industrial applications. Within industrial applications, low-noise power is often achieved by introducing an LDO at the point-of-load to clean up voltage ripple from a previous switching regulator power stage. The LP5922 device makes this possible in an efficient manner by supporting very low dropout, which also eliminates any need for a voltage bias at its input.

Особенности

Low dropout (LDO) allows up to 80% high system efficiency Two high-current outputs High 70-dB PSRR Low-Noise (26-µVRMS) output for sensitive devices Low quiescent current, 25 mA at no load