Key facts
- Brand
- Infineon
- Model
- BTS721L1
- Industry
- Industrial
- Documents
- 3
- Languages
- EN
- Last added
- 2012-04-06
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Infineon BTS721L1 Smart Four-Channel Highside Power Switch Datasheet
The BTS721L1 is a smart four‑channel high‑side power switch designed for 12 V and 24 V DC grounded loads. It integrates overload protection, current limitation, over‑voltage and undervoltage shutdown with auto‑restart, reverse‑battery protection, open‑load detection, and ESD protection. The device is offered in a P‑DSO‑20‑9 package and replaces electromechanical relays in many applications.
The datasheet provides pin definitions, maximum ratings, electrical and diagnostic characteristics, truth tables, and package ordering information. It also details the protection functions, timing diagrams, and recommended external components such as current‑limit resistors for GND and status pins.
Infineon BTS721L1 specifications
| On‑state resistance (typical, single channel, 25 °C) | 85 mΩ |
|---|---|
| Nominal load current (single channel) | 2.9 A |
| ESD protection capability | 1.0 kV (Human Body Model) |
Source: Infineon BTS721L1 Smart Four-Channel Highside Power Switch Datasheet
All Infineon BTS721L1 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
How many channels does the BTS721L1 have?
It has four independent high‑side channels.
From: Infineon BTS721L1 Smart Four-Channel Highside Power Switch Datasheet
What is the typical on‑state resistance for a single channel?
Approximately 85 mΩ at 25 °C.
From: Infineon BTS721L1 Smart Four-Channel Highside Power Switch Datasheet
How many channels can be operated in parallel?
All four channels can be paralleled, with current scaling up to four times the single‑channel rating.
From: Infineon BTS721L1 Smart Four-Channel Highside Power Switch Datasheet