MAX1931 is a 60 mΩ switch with an accurate preset current limit of 0.64A to 1.06A, making it ideally suited for USB applications.
The MAX1931 is a P‑channel MOSFET power switch that limits output current to 0.64 A–1.06 A and provides built‑in fault blanking, thermal shutdown and short‑circuit protection. It operates from 2.7 V to 5.5 V, making it suitable for 3 V and 5 V USB systems.
The datasheet includes absolute maximum ratings, electrical characteristics, typical operating curves, pin descriptions, layout recommendations and application circuits. Key features such as a 10 ms fault‑blanking timeout, 14 µA quiescent supply current and a 10‑pin µMAX package are highlighted for designers.
| Input voltage range | 2.7 V to 5.5 V |
|---|---|
| Quiescent supply current | 14 µA |
| Continuous switch current (limited) | 1.2 A (internally limited) |
| Fault‑blanking timeout | 10 ms |
| Package type | 10‑pin µMAX |
The device provides a 10 ms fault‑blanking timeout to ignore momentary faults.
It operates with input voltages from 2.7 V to 5.5 V.
The quiescent supply current is 14 µA.