Automotive 300-mA, off-battery (40-V), ultra-low-IQ LDO with enable in AEC-Q100 Grade-0 and Grade-1

In automotive battery-connected applications, low

quiescent current (IQ) is important to save power and extend battery

lifetime. Ultra-low IQ must be included for always-on systems.

The TPS7B82-Q1 is a low-dropout linear regulator

designed to operate with a wide input-voltage range from 3V to 40V (45V load dump

protection). Operation down to 3V allows the TPS7B82-Q1 to continue operating during

cold-crank and start and stop conditions. With only 2.7µA typical quiescent current

at light load, this device is an optimum design for powering microcontrollers (MCUs)

and CAN/LIN transceivers in standby systems.

The device features integrated short-circuit and

overcurrent protection. This device operates in ambient temperatures from –40°C to

+125°C and with junction temperatures from –40°C to +150°C. Additionally, this

device uses a thermally conductive package to enable sustained operation despite

significant dissipation across the device. Because of these features, the device is

designed as a power supply for various automotive applications.