The Infineon BTS737S3 datasheet provides specifications, functional diagrams, pin definitions, ratings, and protection features for the four‑channel Smart…
The BTS737S3 is a four‑channel N‑channel vertical power MOSFET with integrated charge pump, CMOS‑compatible input, and diagnostic feedback. It is designed for µC‑compatible high‑side switching of 12 V and 24 V grounded loads, including resistive, capacitive, and lamp loads, and can replace electromechanical relays, fuses, and discrete circuits.
Key specifications include an operating voltage range of 5.0 V to 40 V, on‑state resistance as low as 30 mΩ, nominal load current of 5.4 A per channel, and a current‑limit capability up to 45 A. The device incorporates multiple protection functions such as short‑circuit, overload, current‑limit, thermal shutdown, reverse‑battery, over‑voltage, loss‑of‑ground, and ESD protection, along with a proportional load‑current sense output for diagnostics.
| Operating voltage Vbb(on) | 5.0 – 40 V |
|---|---|
| Maximum supply voltage Vbb | 40 V |
| Nominal load current I L(NOM) | 5.4 A |
| Current limit I L(lim) | 45 A |
The device can tolerate a supply voltage up to 40 V.
It includes short‑circuit, overload, current‑limit, thermal shutdown, reverse‑battery, over‑voltage, loss‑of‑ground, and ESD protection.
Each channel is rated for a nominal load current of 5.4 A.