TPS25974ARPWR

The TPS2597xx series of electronic fuses is a highly integrated circuit protection and power management solution in a small package. Such devices require only a few external components to provide multiple protection modes and can very effectively withstand overloads, short circuits, voltage surges, and excessive inrush currents. A single external capacitor can be used to adjust the output slew rate and inrush current. The load can be protected from input overvoltage conditions by clamping the output to a safe fixed maximum voltage (selectable via a pin) or by cutting off the output when the input exceeds an adjustable overvoltage threshold. Such devices respond to output overloads by actively limiting the current or disconnecting the circuit. Users can adjust the output current limit threshold and the transient overcurrent blanking timer. The current limit control pin also serves as an analog load current monitor. The devices are available in a 2mm × 2mm 10-pin QFN package, designed to improve thermal performance and reduce system size. These devices are rated for an operating junction temperature range of -40°C to +125°C.

Applications

• Server, PC motherboards and add-in cards
• Enterprise storage - RAID/HBA/SAN/eSSD
• Patient monitors
• Appliances and power tools
• Retail point-of-sale terminals
• Smartphones and tablets

Key features

• Wide operating input voltage range: 2.7V to 23V, absolute maximum 28V
• Integrated FET with low on-resistance: R_ON = 9.8mΩ (typical)
• Fast overvoltage protection clamp (OVC) with pin-selectable thresholds (3.89V, 5.76V, 13.88V), 5μs response time (typical), or adjustable overvoltage lockout (OVLO) with 1.2μs response time (typical)
• Overcurrent protection with load current monitor output (ILM), active current limit or circuit breaker option with adjustable threshold (I_LIM): 0.87A to 7.7A, ±10% accuracy for I_LIM > 1.74A
• Adjustable transient blanking timer (ITIMER) supporting peak currents up to 2×I_LM
• Output load current monitor accuracy: ±8% (maximum)
• Short-circuit protection via fast-trip response, 550ns response time (typical), with adjustable (2×I_LM) and fixed thresholds
• Active-high enable input with adjustable undervoltage lockout threshold (UVLO)
• Adjustable output slew rate control (dVdt)
• Overtemperature protection digital output: fault indicator (FLT) or power good indicator (PG) with adjustable threshold (PGTH)
• UL2367 certified (pending)
• IEC 62368 CB certified (pending)
• Small form factor: QFN 2mm × 2mm, 0.45mm pitch