Overview
The TPS26400PWPR from Texas Instruments is a high-voltage electronic fuse (eFuse) designed for industrial applications. It offers a comprehensive suite of protection features, making it ideal for various power protection and management scenarios. The device operates within a wide supply input range of 4.2 V to 42 V, with an absolute maximum voltage of 45 V, and can withstand both positive and negative supply voltages up to ±42 V. This eFuse is particularly useful in systems requiring robust protection against overcurrent, overvoltage, undervoltage, and reverse polarity conditions.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Operating Voltage | 4.2 | - | 42 | V |
| Absolute Maximum Voltage | - | - | 45 | V |
| Current Limit | 0.1 | - | 2.23 | A |
| Total RON (Back to Back MOSFETs) | - | 150 | - | mΩ |
| Quiescent Current (Operating) | - | 300 | - | μA |
| Quiescent Current (Shutdown) | - | 20 | - | μA |
| IMON Current Indicator Accuracy | - | ±8.5% | - | % |
| UVLO Turnon Delay | 250 | - | - | μs |
| Temperature Range | -40 | - | 125 | °C |
| Package Options | - | 16-pin HTSSOP, 24-pin VQFN | - | - |
Key Features
- Integrated reverse input polarity protection down to –42 V without additional components.
- Integrated back to back MOSFETs with 150-mΩ total RON.
- Adjustable current limit from 0.1 A to 2.23 A with ±5% accuracy at 1 A.
- Load protection during surge (IEC 61000-4-5) with suitable TVS.
- IMON current indicator output with ±8.5% accuracy.
- Low quiescent current: 300 μA in operating mode, 20 μA in shutdown mode.
- Adjustable UVLO, OVP cut off, and output slew rate control.
- Reverse current blocking feature.
- Selectable current-limiting fault response options: auto-retry, latch off, circuit breaker modes.
Applications
- HMI power protection in factory automation.
- Fire safety systems.
- Electronic thermostats and video doorbells.
- Industrial PCs.
- Elevators.
Q & A
- What is the operating voltage range of the TPS26400PWPR?
The TPS26400PWPR operates within a voltage range of 4.2 V to 42 V, with an absolute maximum voltage of 45 V.
- What kind of polarity protection does the TPS26400PWPR offer?
The device offers integrated reverse input polarity protection down to –42 V.
- What is the total RON of the integrated back to back MOSFETs?
The total RON of the integrated back to back MOSFETs is 150 mΩ.
- What is the range of the adjustable current limit?
The current limit is adjustable from 0.1 A to 2.23 A with ±5% accuracy at 1 A.
- Does the TPS26400PWPR provide load protection during surges?
Yes, it provides load protection during surges (IEC 61000-4-5) with a suitable TVS.
- What is the accuracy of the IMON current indicator output?
The IMON current indicator output has an accuracy of ±8.5%.
- What are the quiescent current values in operating and shutdown modes?
The quiescent current is 300 μA in operating mode and 20 μA in shutdown mode.
- Can the UVLO, OVP, and output slew rate be adjusted?
Yes, the UVLO, OVP, and output slew rate can be adjusted.
- What are the package options for the TPS26400PWPR?
The device is available in 16-pin HTSSOP and 24-pin VQFN packages.
- What are the selectable current-limiting fault response options?
The device offers selectable current-limiting fault response options: auto-retry, latch off, and circuit breaker modes.
