The TPS74401 is a low-dropout (LDO) linear regulator that provides an easy-to-use robust power management solution for a wide variety of applications.
The TPS74401 linear regulator from Texas Instruments provides a robust power‑management solution for a wide range of applications. It features a programmable soft‑start pin, 1 % accuracy over line, load and temperature, and an open‑drain power‑good output for easy sequencing.
The device is offered in compact 5 mm × 5 mm × 1 mm QFN and DDPAK‑7 packages, supports input voltages as low as 0.9 V, and delivers up to 3 A with an ultra‑low dropout of 115 mV (typ). Detailed electrical characteristics, pin descriptions, and mechanical data are provided in the document.
| Output voltage range | 0.8 V to 3.6 V |
|---|---|
| Maximum output current | 3.0 A |
| Dropout voltage (typ) | 115 mV at 3.0 A |
| Accuracy | ±1 % over line, load, temperature |
| Minimum input voltage | 0.9 V |
| Package options | 5 mm × 5 mm × 1 mm QFN, DDPAK‑7 |
The SS pin provides a linear startup with a ramp time set by an external capacitor, reducing inrush current on power‑up.
The PG pin is an open‑drain, active‑high output that indicates when the regulated output voltage exceeds a trip threshold.
The output voltage is set by selecting resistor values for the feedback network as shown in the standard resistor table.