Overview
The TPS25947xx family, specifically the TPS259474ARPWR, is a highly integrated circuit protection and power management solution from Texas Instruments. This eFuse device is designed to provide comprehensive protection and management for power paths in various applications. It features a wide operating input voltage range, fast response times for overvoltage and overcurrent protection, and adjustable thresholds for several protection mechanisms.
Key Specifications
| Parameter | Minimum | Typical | Maximum | Units |
|---|---|---|---|---|
| Input Voltage Range | 2.7 | - | 23 | V |
| Absolute Maximum Input Voltage | -15 | - | 28 | V |
| On-Resistance (R_ON) | - | 28.3 | - | mΩ |
| Continuous Switch Current (I_MAX) | - | - | 5.5 | A |
| Overvoltage Clamp Thresholds | 3.65, 5.25, 13.2 | 3.88, 5.74, 13.85 | 4.1, 6.2, 14.5 | V |
| Overcurrent Protection Threshold (ILIM) | 0.5 | - | 6 | A |
| Junction Temperature Range | -40 | - | 125 | °C |
| Package Type | - | - | QFN 2 mm × 2 mm, 0.45-mm pitch | - |
Key Features
- Wide operating input voltage range: 2.7 V to 23 V, with an absolute maximum of 28 V and withstands negative voltages up to –15 V.
- Integrated back-to-back FETs with low on-resistance (R_ON = 28.3 mΩ typical).
- Ideal diode operation with true reverse current blocking.
- Fast overvoltage protection and adjustable overvoltage lockout (OVLO) with a 1.2-µs response time.
- Overcurrent protection with load current monitor output (ILM) and adjustable threshold (0.5 A to 6 A).
- Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 × ILIM.
- Fast-trip response for short-circuit protection with a 500-ns response time.
- Active high enable input with adjustable undervoltage lockout threshold (UVLO).
- Adjustable output slew rate control (dVdt).
- Overtemperature protection.
- Digital outputs for priority power MUX control (AUXOFF), fault indication (FLT), or power good indication (PG) with adjustable threshold (PGTH).
- UL 2367 recognition and IEC 62368-1 CB certified.
- Small footprint: QFN 2 mm × 2 mm, 0.45-mm pitch.
Applications
- Power MUX/ORing configurations.
- Adapter input protection.
- USB PD protection for PCs, notebooks, monitors, and docks.
- Server, PC motherboard, and add-on cards.
- Enterprise storage solutions such as RAID/HBA/SAN/eSSD.
- Patient monitors and other medical devices.
Q & A
- What is the operating input voltage range of the TPS259474ARPWR?
The operating input voltage range is from 2.7 V to 23 V, with an absolute maximum of 28 V.
- What is the typical on-resistance of the TPS259474ARPWR?
The typical on-resistance (R_ON) is 28.3 mΩ.
- How does the TPS259474ARPWR protect against overcurrent conditions?
The device features overcurrent protection with a load current monitor output (ILM) and adjustable threshold (0.5 A to 6 A), as well as fast-trip response for short-circuit protection.
- What is the response time for overvoltage lockout (OVLO) in the TPS259474ARPWR?
The response time for OVLO is typically 1.2 µs.
- Can the output slew rate be adjusted in the TPS259474ARPWR?
- What are the digital output options for the TPS259474ARPWR?
The device offers digital outputs for priority power MUX control (AUXOFF), fault indication (FLT), or power good indication (PG) with an adjustable threshold (PGTH).
- Is the TPS259474ARPWR certified by any safety standards?
- What is the package type and size of the TPS259474ARPWR?
The device is packaged in a QFN 2 mm × 2 mm, 0.45-mm pitch package.
- What is the junction temperature range for the TPS259474ARPWR?
The junction temperature range is from –40°C to +125°C.
- How does the TPS259474ARPWR protect against reverse current?
The device features true reverse current blocking with integrated back-to-back FETs.
