Model No: TPS25944ARVCR
Texas Instruments TPS25944ARVCR
Manufacturer: Texas Instruments
SEMICON NO.: TPS25944ARVCR
Package: 20-WQFN
Stock: In stock
Description: Electronic Fuse Regulator 5.3A
SEMICON NO.: TPS25944ARVCR
Package: 20-WQFN
Stock: In stock
Description: Electronic Fuse Regulator 5.3A
Quantity :
| Mfr | Texas Instruments |
| Input Voltage Range (VIN) | 4.2V to 44V |
| Continuous Current (ILIM) | Programmable, up to 8A |
| On-Resistance (RDS(on)) | 55mΩ (Typical, Internal FET) |
| Inrush Control | Adjustable Slew Rate Control (dV/dt) |
| Power Good Output (PG) | Open-Drain, indicates output is within regulation |
| Adjustability | ILIM, dV/dt, UVLO/OVP thresholds via single external resistor |
| Operating Temperature | -40°C to +125°C |
| Package | 20-WQFN |
| Mounting Type | Surface Mount (SMD/SMT) |
| Compliance | RoHS Compliant |
TPS25944ARVCR eFuse / Hot Swap Controller
The TPS25944ARVCR from TI is an advanced, 36V-rated, single-channel eFuse (electronic fuse) and integrated protection device, designed to safeguard downstream circuits from potentially damaging overcurrent, overvoltage, and inrush current events in high-reliability systems. It features a wide input voltage range of 4.5V to 36V and supports a high continuous current of up to 5A, making it suitable for a broad array of industrial, communications, and enterprise applications. Housed in a compact, thermally efficient 3.5mm x 3.5mm QFN package, this device integrates a low-Rds(on) (25mΩ typical) N-channel MOSFET with precision control logic to provide robust, programmable protection and smooth power sequencing.
The eFuse's architecture centers on a smart gate driver that actively controls the slew rate of the internal FET to manage inrush current, a critical feature for powering capacitive loads and ensuring compliance with hot-swap specifications. It offers highly accurate, user-adjustable current limiting via an external sense resistor, with fast response to short-circuit events. The overvoltage clamp function actively regulates the output during input transients, protecting sensitive loads. Additional features include programmable undervoltage lockout (UVLO), thermal shutdown, and a fault-indication flag (FLT) pin. Its adjustable timer-based retry or latch-off response to faults provides flexible system-level fault management strategies.
TPS25944ARVCR Hot Swap Controller Applications
1. Industrial Automation & PLCs: Protects controller I/O modules, sensor hubs, and communication ports from wiring errors, transients, and overloads in harsh 24V industrial bus environments.
2. Network & Communications Equipment: Serves as a robust hot-swap and protection solution for line cards, PoE (Power over Ethernet) systems, routers, and switches, managing inrush current and isolating faults.
3. Server & Enterprise Storage: Provides essential protection for SSD/HDD backplanes, fan trays, and PCIe cards in servers and RAID systems, ensuring safe board insertion/removal and system reliability.
4. Automotive Infotainment & ADAS: Used in 12V/24V automotive power distribution to protect telematics control units, displays, and camera modules from load dump, reverse polarity, and short-circuit events.
AlternativeeFuse IC Models
● Analog Devices (ADI) / Maxim Integrated MAX17525: A 60V, 5.5A adjustable overcurrent protector with integrated FET and a wide operating range, featuring a low 30mΩ Rds(on) and fast response time for industrial and automotive applications.
● onsemi NCP4545: A dual-channel integrated load switch and eFuse with independent enable/flag pins, offering current limiting, thermal protection, and controlled turn-on for space-constrained multi-rail systems.
● Diodes Incorporated AP22653: A simple yet effective 5.5V, 2A load switch with adjustable current limit and fast short-circuit protection, known for its cost-efficiency and small package for consumer and portable electronics.
● STMicroelectronics STEF12: An 18V, 2A intelligent electronic fuse with advanced protection features, including active inrush control and power limitation, designed for USB ports and general-purpose system protection.
The TPS25944ARVCR from TI is an advanced, 36V-rated, single-channel eFuse (electronic fuse) and integrated protection device, designed to safeguard downstream circuits from potentially damaging overcurrent, overvoltage, and inrush current events in high-reliability systems. It features a wide input voltage range of 4.5V to 36V and supports a high continuous current of up to 5A, making it suitable for a broad array of industrial, communications, and enterprise applications. Housed in a compact, thermally efficient 3.5mm x 3.5mm QFN package, this device integrates a low-Rds(on) (25mΩ typical) N-channel MOSFET with precision control logic to provide robust, programmable protection and smooth power sequencing.
The eFuse's architecture centers on a smart gate driver that actively controls the slew rate of the internal FET to manage inrush current, a critical feature for powering capacitive loads and ensuring compliance with hot-swap specifications. It offers highly accurate, user-adjustable current limiting via an external sense resistor, with fast response to short-circuit events. The overvoltage clamp function actively regulates the output during input transients, protecting sensitive loads. Additional features include programmable undervoltage lockout (UVLO), thermal shutdown, and a fault-indication flag (FLT) pin. Its adjustable timer-based retry or latch-off response to faults provides flexible system-level fault management strategies.
TPS25944ARVCR Hot Swap Controller Applications
1. Industrial Automation & PLCs: Protects controller I/O modules, sensor hubs, and communication ports from wiring errors, transients, and overloads in harsh 24V industrial bus environments.
2. Network & Communications Equipment: Serves as a robust hot-swap and protection solution for line cards, PoE (Power over Ethernet) systems, routers, and switches, managing inrush current and isolating faults.
3. Server & Enterprise Storage: Provides essential protection for SSD/HDD backplanes, fan trays, and PCIe cards in servers and RAID systems, ensuring safe board insertion/removal and system reliability.
4. Automotive Infotainment & ADAS: Used in 12V/24V automotive power distribution to protect telematics control units, displays, and camera modules from load dump, reverse polarity, and short-circuit events.
AlternativeeFuse IC Models
● Analog Devices (ADI) / Maxim Integrated MAX17525: A 60V, 5.5A adjustable overcurrent protector with integrated FET and a wide operating range, featuring a low 30mΩ Rds(on) and fast response time for industrial and automotive applications.
● onsemi NCP4545: A dual-channel integrated load switch and eFuse with independent enable/flag pins, offering current limiting, thermal protection, and controlled turn-on for space-constrained multi-rail systems.
● Diodes Incorporated AP22653: A simple yet effective 5.5V, 2A load switch with adjustable current limit and fast short-circuit protection, known for its cost-efficiency and small package for consumer and portable electronics.
● STMicroelectronics STEF12: An 18V, 2A intelligent electronic fuse with advanced protection features, including active inrush control and power limitation, designed for USB ports and general-purpose system protection.
