Texas Instruments TPS25961 100miliΩ eFuse

Texas Instruments TPS25961 100mΩ eFuse is an integrated FET hot-swap device combined to create a highly integrated circuit protection and power management solution. The TPS25961 features multiple protection modes using very few external components and is a robust defense against overloads, short circuits, voltage surges, and excessive inrush current.

The TI TPS25961 output current limit level is set with a single external resistor. Meanwhile, the inrush current is managed using output slew rate control internally. The eFuse has an option to externally set a user-defined overvoltage cutoff threshold or use a fixed internal threshold. This option protects an input overvoltage condition.

The TPS25961 is characterized for operation over a junction temperature range of –40°C to +125°C and is available in a small, 2mm x 2mm SON package.

Features

• 2.7V to 19V Wide input voltage range
  • 21V absolute maximum
• Overvoltage protection with a response time of 1.3μs (typical)
  • 5.98V (typical) Fixed internal threshold
  • Adjustable threshold using an external resistor divider
• Overcurrent protection:
  • 0.1A to 2A Adjustable current limit threshold
  • Current limit accuracy:
    • ±20% (typical) across the current range
    • ±18% (maximum) at 1.45A current limit, T_A = 25°C
• Low on-resistance Ron = 106mΩ (typical)
• Active high enable input with adjustable undervoltage lockout (UVLO)
• Short-circuit protection with a response time of 5μs (typical)
• 5.17V/ms (typical) Output slew rate control (dVdt)
• Overtemperature protection (OTP)
• Auto-retry after fault
• 130μA (typical) Low quiescent current
• UL 2367 recognition (pending)
• IEC 62368 CB certification (pending)
• Small footprint of 2mm x 2mm SON package

Application Schematic

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