Fixed 5 V rail with 1.5 A continuous capability
The Texas Instruments UA7805CKTTR is a single-output positive fixed LDO regulator delivering 5 V at up to 1.5 A continuous.
PSRR and protection for analog supply duty
Power-supply rejection ratio is 78 dB typical at 120 Hz, rolling to 68 dB — this attenuates 120 Hz ripple from a full-wave rectifier by roughly 2500×, making the part suitable for powering low-noise analog stages (op-amp rails, ADC reference buffers) where line-frequency hum must stay below the noise floor. Built-in over-temperature shutdown and reverse polarity protection guard against common field faults: a shorted load that drives junction temperature above the die threshold triggers thermal foldback, and a reversed input supply does not damage the output pass element.
DDPAK/TO-263-3 surface-mount package — thermal design note
At 1.5 A output with 7 V input, the power dissipation is roughly 3 W — the board copper area and airflow determine the junction temperature, not the package alone.