Texas Instruments TPS7A25 LDO Linear Voltage Regulators

The TPS7A25 has fixed and adjustable versions with 1% output regulation accuracy, providing precision regulation for microcontroller (MCU) references. The fixed-voltage version eliminates external resistors and minimizes the printed circuit board (PCB) area. The adjustable version uses feedback resistors to set the output voltage from 1.24V to 17.64V for more flexibility or higher output voltages.

The Texas Instruments TPS7A25 LDO has an efficient operation with a maximum dropout voltage of less than 360mV at 300mA current. The maximum dropout voltage allows for 92.5% efficiency from a 5.4V input voltage (VIN) to a 5.0V output voltage (VOUT). The power-good (PG) indicator can hold an MCU in reset until power is good or for sequencing. The PG pin has an open-drain output, allowing the pin to easily level-shift for monitoring by a rail other than VOUT. In the event of a load short or fault, the built-in current limit and thermal shutdown helps protect the regulator.