TPS7A2501DRVR

The TPS7A25 low-dropout (LDO) linear voltage
regulator introduces a combination of a 2.4-V to 18-V
input voltage range with very-low quiescent current
(IQ). These features help modern appliances meet
increasingly stringent energy requirements, and help
extend battery life in portable-power solutions.
The TPS7A25 is available in both fixed and adjustable
versions. For more flexibility or higher output voltages,
the adjustable version uses feedback resistors to set
the output voltage from 1.24 V to 17.64 V. Both
versions have a 1% output regulation accuracy that
provides precision regulation for most microcontroller
(MCU) references.
The TPS7A25 LDO operates more efficiently than
standard linear regulators because the maximum
dropout voltage is less than 340 mV at 300 mA of
current. This maximum dropout voltage allows for
92.5% efficiency from a 5.4-V input voltage (VIN) to
a 5.0-V output voltage (VOUT).
The power-good (PG) indicator can be used to either
hold an MCU in reset until power is good, or for
sequencing. The PG pin is an open-drain output;
therefore, the pin is easily level-shifted for monitoring
by a rail other than VOUT. The built-in current limit
and thermal shutdown help protect the regulator in the
event of a load short or fault.
For a higher output current alternative, consider the
TPS7A26.