This document describes the features and characteristics of the PROFET® BTS721L1 Semiconductor's smart four-channel high-side power switch, including overload protection, current limitation, short-circuit protection, thermal shutdown, and overvoltage protection.
The BTS721L1 is a smart four‑channel high‑side power switch with overload, over‑voltage, short‑circuit, reverse‑battery and ESD protection. It offers diagnostic open‑load detection, CMOS‑compatible inputs and can replace electromechanical relays for 12 V and 24 V DC loads.
The datasheet details the device’s pinout, maximum ratings, electrical and diagnostic characteristics, truth table, and package information. It also includes block diagrams, protection function specifications, and ordering codes for reference.
| Supply voltage for full short‑circuit protection | 34 V |
|---|---|
| Nominal load current – one channel active | 2.9 A |
All four channels can be paralleled, with current scaling up to four times the single‑channel rating.