The TPS736xx is a cap-free, NMOS, 400mA low-dropout regulator with reverse current protection. It uses a new topology that allows stable operation with or without output capacitors, including capacitors with low ESR. The TPS736xx features high reverse blockage, constant ground pin current, and low dropout voltage.
The TPS736xx family provides a cap‑free, NMOS‑based LDO regulator that operates from 1.7 V to 5.5 V input and delivers up to 400 mA output current. It offers ultra‑low dropout (75 mV typ) and reverse‑current protection, making it suitable for portable and battery‑powered equipment.
The device is available in multiple fixed‑output versions (1.20 V‑4.3 V) and an adjustable version (1.20 V‑5.5 V). Various package options are offered, including DBV, DCQ, DRB, SOT‑23, SOT‑223 and SON. Detailed electrical characteristics, pin assignments, and typical application circuits are provided in the datasheet.
| Input voltage range | 1.7 V – 5.5 V |
|---|---|
| Typical dropout voltage (400 mA) | 75 mV typ |
| Maximum output current | 400 mA (peak output current internally limited) |
| Fixed output voltage options | 1.20 V – 4.3 V |
| Adjustable output voltage range | 1.20 V – 5.5 V |
| Thermal shutdown temperature | 160 °C |
| ESD rating (HBM) | 2 kV |
The typical dropout voltage is 75 mV at 400 mA output current.
It operates with an input voltage from 1.7 V to 5.5 V.
Fixed‑output versions are available from 1.20 V to 4.3 V.