Overview
The TPS25940AQRVCRQ1, produced by Texas Instruments, is a compact and feature-rich eFuse power switch designed for automotive and other high-reliability applications. This device is part of the TPS25940xx-Q1 family and is AEC-Q100 qualified, ensuring it meets stringent automotive standards. It offers a wide operating voltage range of 2.7-V to 18-V, with a maximum voltage of 20 V, and features integrated back-to-back FETs for bidirectional current control. This makes it ideal for systems that require load side holdup energy management and protection against supply bus failures.
Key Specifications
| Parameter | Value |
|---|---|
| Operating Voltage Range | 2.7 V to 18 V (max 20 V) |
| Total RON | 42 mΩ (typical) |
| Adjustable Current Limit | 0.6 A to 5.3 A (±8% accuracy) |
| Operating Temperature Range | –40°C to +125°C |
| ESD Classification | HBM Level 2, CDM Level C5 |
| Package | WQFN (20 pins), 3.00 mm x 4.00 mm |
| Reverse Current Blocking | True reverse current blocking when V(IN) < (V(OUT) – 66 mV) |
Key Features
- Qualified for automotive applications with AEC-Q100 certification.
- Wide operating voltage range of 2.7 V to 18 V, with a maximum voltage of 20 V.
- Integrated back-to-back FETs for bidirectional current control.
- Adjustable current limit from 0.6 A to 5.3 A with ±8% accuracy.
- IMON current indicator output for precise current monitoring.
- Adjustable under- and overvoltage thresholds (±2%).
- Reverse current blocking and 1-µs reverse voltage shutoff.
- Programmable dV/dt control.
- Power good and fault outputs.
- Short-to-battery and short-to-ground protection.
- Auto-retry (TPS25940A-Q1) and latch-off (TPS25940L-Q1) modes.
Applications
- PCIe/SATA/SAS HDD and SSD drives.
- Enterprise and micro servers.
- Set-top-box (STB), DTVs, and game consoles.
- RAID cards - holdup power management.
- Telecom switches and routers.
- Adapter-powered devices.
Q & A
- What is the operating voltage range of the TPS25940AQRVCRQ1?
The operating voltage range is 2.7 V to 18 V, with a maximum voltage of 20 V.
- What is the typical RON of the TPS25940AQRVCRQ1?
The typical RON is 42 mΩ.
- What are the adjustable current limit ranges for this device?
The adjustable current limit ranges from 0.6 A to 5.3 A with ±8% accuracy.
- What is the operating temperature range of the TPS25940AQRVCRQ1?
The operating temperature range is –40°C to +125°C.
- Does the TPS25940AQRVCRQ1 have reverse current blocking capability?
- What types of protection does the TPS25940AQRVCRQ1 offer?
The device offers overcurrent, undervoltage, overvoltage, short-to-battery, and short-to-ground protections.
- How does the TPS25940AQRVCRQ1 handle fault conditions?
The device provides power good and fault outputs and can operate in auto-retry or latch-off modes depending on the variant.
- What is the purpose of the IMON pin on the TPS25940AQRVCRQ1?
The IMON pin provides a current indicator output for precise current monitoring.
- Can the TPS25940AQRVCRQ1 be used in automotive applications?
- What package type and size does the TPS25940AQRVCRQ1 come in?
The device comes in a WQFN package with 20 pins, measuring 3.00 mm x 4.00 mm.
