Overview
The TPS26611DDFR, produced by Texas Instruments, is a compact and feature-rich current loop protector designed for various industrial and automation applications. This device is part of the TPS2661x family, which offers universal input protection for ±20 mA, 0 mA to 20 mA, and 4 mA–20 mA current loops. It is particularly suited for analog inputs, analog outputs, sensor transmitters, HART inputs, and UART IO protection.
The TPS26611DDFR operates within a wide voltage range, supporting both bipolar and unipolar supplies. It features integrated fixed bipolar 32-mA current limit, low RON of 7.5 Ω, and low quiescent current (< 100 nA). The device also includes robust protection mechanisms against miswiring, surge, and EFT transients, ensuring reliable operation in harsh environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage | ±2.25 | ±30 | V | |
| Absolute Maximum Voltage | –55 | 55 | V | |
| Current Limit | 25 | 32 | 40 | mA |
| RON | 7.5 | Ω | ||
| Quiescent Current (IQ) | < 100 | nA | ||
| Turn ON Delay | 120 | μs | ||
| Turn OFF Delay | 10 | μs | ||
| Package | 8-pin SOT-23 | |||
| Body Size | 2.9 mm × 1.6 mm |
Key Features
- ±50-V operating voltage, ±55-V absolute maximum
- Integrated fixed bipolar 32-mA current limit
- Low RON of 7.5 Ω
- Low quiescent current (< 100 nA)
- Protection against miswiring conditions on IN and OUT
- Protection during signal line surge (IEC61000-4-5) and EFT (IEC61000-4-4) immunity with external TVS
- Enable control and SGOOD for system health monitoring
- Thermal shutdown and loop testing without supply (for specific models)
- HART compliant and supports loop testing in unpowered state
- Compact 8-pin SOT-23 package, reducing system footprint
Applications
- Factory automation and control – PLCs, analog input and output modules
- Motor drives control
- HART inputs
- HVAC controllers
- UART IO protection
- Thermal controllers
- Analog outputs and sensor transmitters
Q & A
- What is the operating voltage range of the TPS26611DDFR?
The TPS26611DDFR operates within a voltage range of ±2.25 V to ±30 V.
- What is the absolute maximum voltage rating for the TPS26611DDFR?
The absolute maximum voltage rating is ±55 V.
- What is the typical RON value of the TPS26611DDFR?
The typical RON value is 7.5 Ω.
- Does the TPS26611DDFR have built-in protection against miswiring?
Yes, it has protection against miswiring conditions on IN and OUT.
- Is the TPS26611DDFR HART compliant?
Yes, it is HART compliant.
- What is the package type and size of the TPS26611DDFR?
The package type is 8-pin SOT-23, and the body size is 2.9 mm × 1.6 mm.
- Does the TPS26611DDFR support loop testing without a supply?
No, this feature is specific to the TPS26610 and TPS26613 models.
- What kind of thermal protection does the TPS26611DDFR offer?
The device features thermal shutdown.
- Can the TPS26611DDFR be used in motor drive control applications?
Yes, it can be used in motor drive control applications.
- Does the TPS26611DDFR have an enable control feature?
Yes, it has an enable control feature through the EN pin.
