AMS1117 regulator (AMS1117-3, SOT-223)
AMS1117-3.3 · SOT-223 · fixed 3.3 V · 1 A · needs about 1.1 V of headroom at full load (an “LDO” by 1990s standards) · 10 µF on the output for stability
Try it on the benchThe lab drops it on an empty bench and opens its datasheet card.
Pins
- 1 GND / ADJ
- 2 OUT (tab)
- 3 IN
Ratings and limits
| Output | 3.3 V, 1 A |
|---|---|
| Dropout | 1.1 V at 800 mA |
| Input | up to 15 V |
How to use it
The 3.3 V regulator on most ESP32 and Arduino boards. Needs 10 µF on its output; heat is (V_in − V_out) × I.