PROFET® BTS 733 L1 is a dual channel high side power switch produced by Infineon Technologies AG in Germany. The features include overload protection, current limitation, short circuit protection, thermal shutdown, overvoltage protection (including load dump), reverse battery protection1), undervoltage and overvoltage shutdown with auto-restart and hysteresis, open drain diagnostic output, open load detection in ON-state, CMOS compatible input, ground reference loss and Vbb protection, electrostatic discharge (ESD) protection. It is used for 12 V DC grounded loads of µC compatible power switch, and is most suitable for resistive and lamp loads. It can replace electromechanical relays, fuses and discrete circuits.
The PROFET BTS 733 L1 is a smart two‑channel high‑side power switch with integrated protection functions such as overload, over‑ and undervoltage, thermal shutdown, reverse‑battery and ESD protection. It is designed for 12 V DC grounded loads, suitable for resistive and lamp applications and can replace electromechanical relays or fuses.
The document provides detailed pin definitions, block diagrams, maximum ratings, thermal and electrical characteristics, protection functions, and package information. It also includes timing diagrams, truth tables, and recommended external components for current limiting and status feedback.
| Overload protection voltage (Vob) | 43 V |
|---|---|
| Operating voltage (Vip) | 24 V |
| Nominal load current (one channel active) | 4.4 – 4.8 A |
| Nominal load current (two parallel channels active) | 6.7 – 7.3 A |
| Power dissipation (all channels active, 25 °C) | 3.8 W |
| ESD protection capability | 1.0 kV (HBM) |
| Input voltage range | -10 V … +16 V |
| Turn‑on time (to 90 % Vout) | 80 – 180 µs |
| Turn‑off time (to 10 % Vout) | 80 – 250 µs |
The nominal load current for one active channel is 4.4 A to 4.8 A.