Automotive single – dual-channel high PSRR LDO delivers current sensing
EP&T MagazineElectronics Semiconductors semiconductors
HMI HL8743 an AEC-Q100 Grade 1 qualified automotive single and dual-channel high PSRR LDO with current sensing, features a high-input voltage, single and dual low-dropout regulator, both equipped with precise current sensing, and capabilities designed to operate with a wide input voltage range from 4.5V to 40V. With 45V load dump protection at the power input pin, device provides power to the low-noise amplifiers of the active antenna through a coaxial cable with 350mA per channel current. Each channel provides an adjustable output voltage from 1.5V to 20V through a resister divider on the feedback pin. The different variations of the HL8743 device provide diagnostics through the current sense and nERR pins. HL8743 can also serve as a general-purpose high-performance LDO.