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Parameters

FET Internal Ron (Typ) (mOhm) 31 Vin (Min) (V) 2.7 Vin (Max) (V) 5.7 Vabsmax_cont (V) 28 Current limit (Min) (A) 0.5 Current limit (Max) (A) 4.44 Overcurrent response Current Limiting Fault response Auto Retry, Latch Off UL recognition UL2367, IEC62368 (pending) open-in-new Find other eFuses & hot swap controllers

Package | Pins | Size

VQFN-HR (RPW) 10 open-in-new Find other eFuses & hot swap controllers

Features

  • Wide operating input voltage range: 2.7 V to 5.7 V
  • 28-V absolute maximum
  • Withstands negative voltages up to – 15 V
  • Integrated back-to-back FETs with low On-Resistance: RON = 31 mΩ (typ)
  • Ideal diode operation with true reverse current blocking
  • Fast overvoltage clamp (OVC) with pin-selectable threshold (3.8 V, 5.7 V) with 5-µs (typ) response time
  • Overcurrent protection with load current monitor output (ILM)
    • Active current limit response
    • Adjustable threshold (ILIM) 0.5 A - 4.44 A
      • ±10% accuracy for ILIM > 1 A
    • Adjustable transient blanking timer (ITIMER) to allow peak currents up to 2 x ILIM
    • Output load current monitor accuracy: ±6% (IOUT ≥ 1 A)
  • Fast-trip response for short-circuit protection
    • 500-ns (typ) response time
    • Adjustable (2 x ILIM) and fixed thresholds
  • Active High Enable input with adjustable undervoltage lockout threshold (UVLO)
  • Adjustable output slew rate control (dVdt)
  • Overtemperature protection
  • Power Good indication (PG) with adjustable threshold (PGTH)
  • IEC 62368 CB certification (pending)
  • UL 2367 recognition (pending)
  • Small footprint: QFN 2 mm × 2 mm, 0.45-mm pitch

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Description

The TPS2521x family of eFuses is a highly integrated circuit protection and power management solution in a small package. The devices provide multiple protection modes using very few external components and are a robust defense against overloads, short-circuits, voltage surges, reverse polarity and excessive inrush current. With integrated back-to-back FETs, reverse current flow from output to input is blocked at all times, making the device well suited for systems which need load side energy hold up storage in case input power supply fails.

Output current limit level can be set with a single external resistor. It is also possible to get an accurate sense of the output load current by measuring the voltage drop across the current limit resistor.

Applications with particular inrush current requirements can set the output slew rate with a single external capacitor. Loads are protected from input overvoltage conditions by clamping the output to a safe fixed maximum voltage (pin selectable).

The devices are available in a 2-mm × 2-mm, 10-pin HotRod QFN package for improved thermal performance and reduced system footprint.

The devices are characterized for operation over a junction temperature range of –40°C to +125°C.

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Technical documentation

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Type Title Date
* Datasheet TPS2521xx, 2.7 - 5.7 V, 4 A, 31-mΩ True Reverse Current Blocking eFuse with Input Reverse Polarity Protection datasheet Mar. 30, 2021
User guide TPS25210EVM: Evaluation Module for TPS25210 eFuse Mar. 31, 2021

Design & development

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PSPICE-FOR-TI — PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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  • Dynamic updates ensure you have access to most current device models
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  • Supports simultaneous analysis of multiple products
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