Overview
The TPS25980x family of eFuses from Texas Instruments is a highly integrated circuit protection and power management solution designed to operate in a wide range of applications. These devices are packaged in a small 4 mm × 4 mm QFN package and are characterized for operation over a junction temperature range of –40°C to 125°C. They offer a robust defense against overloads, short-circuits, voltage surges, and excessive inrush current, making them suitable for both low-voltage systems requiring minimal I*R voltage drop and higher voltage, high current systems needing low power dissipation.
Key Specifications
| Parameter | Value |
|---|---|
| Input Voltage Range | 2.7 V to 24 V |
| Absolute Maximum Input Voltage | 30 V |
| On-Resistance (RON) | 3 mΩ typical |
| Current Limit Threshold Range | 2 A to 8 A |
| Current Limit Accuracy | ± 8% (typical for ILIM > 5 A) |
| Fast-Trip Response Time | < 400 ns typical |
| Operating Temperature Range | –40°C to 125°C |
| Package Type | 4 mm × 4 mm QFN |
| Certifications | UL 2367 Recognition, IEC 62368 CB Certification |
Key Features
- Wide input voltage range: 2.7 V to 24 V
- Low On-Resistance: 3 mΩ typical
- Adjustable current limit threshold: 2 A to 8 A
- Adjustable over-current blanking timer
- Accurate current monitor output: ± 3% (typical at 25 °C for IOUT > 3 A)
- User configurable fault response: latch-off or auto-retry
- Configurable number of retries and retry delay
- Robust short-circuit protection with fast-trip response time < 400 ns typical
- Immune to line transients - no nuisance tripping
- Adjustable output slew rate (dVdt) control and undervoltage lockout
- Overvoltage lockout (Fixed 3.7-V, 7.6-V, 16.9-V and no-OVLO options)
- Integrated overtemperature protection and power good indication
- Adjustable load detect and handshake timer
Applications
The TPS25980x eFuses are suitable for a variety of applications requiring robust circuit protection and power management. These include:
- Server and data center power supplies
- Industrial control systems
- Automotive systems
- Telecommunications equipment
- High-reliability power systems in aerospace and defense
Q & A
- What is the input voltage range of the TPS25980x eFuse?
The input voltage range is 2.7 V to 24 V.
- What is the typical on-resistance of the TPS25980x eFuse?
The typical on-resistance is 3 mΩ.
- How is the current limit threshold adjusted in the TPS25980x eFuse?
The current limit threshold can be adjusted using a single external resistor.
- What is the fast-trip response time of the TPS25980x eFuse?
The fast-trip response time is less than 400 ns typical.
- Is the TPS25980x eFuse immune to line transients?
Yes, it is immune to line transients and does not experience nuisance tripping.
- Can the fault response of the TPS25980x eFuse be configured?
Yes, the fault response can be configured to either latch-off or auto-retry with configurable retries and retry delay.
- What certifications does the TPS25980x eFuse hold?
The device holds UL 2367 Recognition and IEC 62368 CB Certification.
- What is the operating temperature range of the TPS25980x eFuse?
The operating temperature range is –40°C to 125°C.
- How is the overvoltage protection managed in the TPS25980x eFuse?
Overvoltage protection is managed through internal cutoff circuits with multiple device options for overvoltage thresholds.
- Does the TPS25980x eFuse have integrated overtemperature protection?
Yes, it has integrated overtemperature protection.
