Overview
The TPS25940LQRVCRQ1 is a high-performance electronic fuse (eFuse) power switch designed by Texas Instruments. This device is part of the TPS25940xx-Q1 family and is specifically tailored for automotive and other high-reliability applications. It features a wide operating voltage range of 2.7 V to 18 V, making it versatile for controlling various DC bus voltages. The TPS25940LQRVCRQ1 is AEC-Q100 qualified, ensuring it meets stringent automotive standards with a temperature range of –40°C to +125°C. It integrates multiple protection functions, including overcurrent, undervoltage, overvoltage, and reverse current blocking, making it an ideal choice for systems requiring robust power management.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Unit |
|---|---|---|---|---|
| Input Voltage (VIN) | 2.7 | - | 18 | V |
| Current Limit (ILIM) | 0.6 A | - | 5.3 A | A |
| On-Resistance (RON) | 26 mΩ | 42 mΩ | 64 mΩ | mΩ |
| Operating Junction Temperature (TJ) | -40°C | - | 125°C | °C |
| Reverse Voltage Threshold (VREVTH) | -77 mV | -66 mV | -55 mV | mV |
| Thermal Shutdown (TTSD) | 160°C | - | - | °C |
| Package Type | - | - | 20-WQFN (4x3) | - |
Key Features
- Qualified for automotive applications with AEC-Q100 certification.
- Wide operating voltage range: 2.7 V to 18 V.
- Adjustable current limit (0.6 A to 5.3 A) with ±8% accuracy.
- Programmable undervoltage and overvoltage thresholds (±2%).
- Reverse current blocking with 1-μs reverse voltage shutoff.
- Power good and fault outputs for system status monitoring.
- Short-to-battery and short-to-ground protection.
- Latch-off fault response (specific to TPS25940L-Q1).
- True reverse current blocking.
- DevSleep mode for low power consumption.
Applications
- Automotive Infotainment Systems.
- ADAS Cameras and Radar Sensors.
- USB Hubs.
- Power MUXing.
- Holdup Power Management.
Q & A
- What is the operating voltage range of the TPS25940LQRVCRQ1?
The operating voltage range is 2.7 V to 18 V, with a maximum transient voltage of 20 V for 10 ms.
- What is the current limit range of the TPS25940LQRVCRQ1?
The current limit is adjustable from 0.6 A to 5.3 A with ±8% accuracy.
- What protection features does the TPS25940LQRVCRQ1 offer?
The device offers overcurrent, undervoltage, overvoltage, reverse current blocking, short-to-battery, and short-to-ground protection.
- What is the thermal shutdown threshold of the TPS25940LQRVCRQ1?
The thermal shutdown threshold is 160°C with a hysteresis of 12°C.
- What is the package type of the TPS25940LQRVCRQ1?
The device is packaged in a 20-WQFN (4x3) package.
- Is the TPS25940LQRVCRQ1 suitable for automotive applications?
Yes, it is AEC-Q100 qualified and suitable for automotive applications.
- What is the DevSleep mode in the TPS25940LQRVCRQ1?
The DevSleep mode is a low power mode that can be activated by setting the DEVSLP pin high.
- How does the TPS25940LQRVCRQ1 handle fault responses?
The TPS25940L-Q1 has a latch-off fault response, while other variants may have auto-retry.
- What is the purpose of the IMON pin in the TPS25940LQRVCRQ1?
The IMON pin sources a scaled-down ratio of the current through the internal FET, used as an analog current monitor.
- What is the function of the FLT pin in the TPS25940LQRVCRQ1?
The FLT pin is an open-drain output that indicates fault conditions such as undervoltage, overvoltage, reverse voltage, and thermal shutdown.
