TPS259472ARPWR

The TPS25947xx series of electronic fuses are highly integrated circuit protection and power management solutions in a small package. These devices offer multiple protection modes with only a few external components and can effectively protect against overload, short circuit, voltage surge, reverse polarity, and excessive inrush current. With the integrated back-to-back FETs, reverse current flow from the output to the input is always blocked, making these devices ideal for power multiplexer/ORing applications and systems that require a load-side energy hold-up storage solution in case of input power failure. These devices use a linear ORing-based scheme to ensure almost zero DC reverse current and mimic the behavior of an ideal diode with minimal forward voltage drop and power dissipation.

Applications

• Power Multiplexer/ORing
• Adapter Input Protection
• USB PD Protection - PCs, Laptops, Monitors, Docking Stations
• Servers, PC Motherboards and Add-in Cards
• Enterprise Storage - RAID/HBA/SAN/eSSD
• Patient Monitors

Key features

• Wide operating input voltage range: 2.7V to 23V
• Fast overvoltage protection
• Overvoltage clamp (OVC) with pin-selectable thresholds (3.8V, 5.7V, 13.8V), 5 μs typical response time, or adjustable overvoltage lockout (OVLO) with 1.2 μs typical response time
• Overcurrent protection with load current monitor output (ILM)
• Active current limit or circuit breaker option with adjustable threshold (I_LIM): 0.5A to 6A
• ±10% accuracy for I_LIM > 1A
• Adjustable transient blanking timer (ITIMER) supporting peak currents up to 2×I_LM
• Output load current monitor accuracy: ±6% (I ≥ 1A)
• Short-circuit protection via fast trip response, 500 ns typical response time, 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
• Priority power multiplexer control (AUXOFF) and fault indication (FLT), or power good indication (PG) with adjustable threshold (PGTH)
• UL 2367 certified
• Output slew rate and inrush current can be controlled using a single external capacitor. Loads are protected against input overvoltage conditions by clamping the output to a safe fixed maximum voltage (pin-selectable) or by shutting off the output when the input exceeds an adjustable overvoltage threshold. These devices respond to output overloads by actively limiting current or breaking the circuit. The output current limit threshold and transient overcurrent blanking timer are both user-adjustable. The current limit control pin also functions as an analog load current monitor.
• These devices are offered in a 2mm × 2mm 10-pin HotRod 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.