PROFET® BTS721L1 4-channel high-side power switch features overload protection, current limitation, short-circuit protection, thermal shutdown, overvoltage protection (including load dump), fast demagnetization of inductive loads, reverse battery protection, undervoltage and overvoltage shutdown with auto-restart and hysteresis, open drain diagnostic output, open load detection in ON-state, CMOS compatible input, loss of ground and loss of Vbb protection, electrostatic discharge (ESD) protection.
The Siemens BTS721L1 is a smart four‑channel high‑side power switch built with N‑channel vertical power FETs and integrated charge‑pump technology. It offers over‑voltage, short‑circuit, thermal shutdown, reverse‑battery, and ESD protection, plus diagnostic open‑load detection.
The document provides pin definitions, block diagrams, maximum ratings, electrical characteristics, protection functions, diagnostic parameters, truth tables, and package dimensions for designers and system integrators.
| Supply voltage for full short‑circuit protection | 34 V |
|---|---|
| On‑state resistance (typical, 25 °C) | 85 mΩ |
| Nominal load current (one channel active) | 2.9 A |
The BTS721L1 provides four independent high‑side channels.
Yes, the device incorporates reverse‑battery protection.
Typical on‑state resistance is 85 mΩ at 25 °C.