TPS25927 18V, 5A, 28mΩ eFuse with BFET Driver for Reverse Current Protection |


18V, 5A, 28mΩ eFuse with BFET Driver for Reverse Current Protection


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The TPS25927x family of eFuses is a highly integrated circuit protection and power management solution in a tiny package. The devices use few external components and provide multiple protection modes. They are a robust defense against overloads, shorts circuits, excessive inrush current, and reverse current.

Current limit level can be set with a single external resistor. Applications with particular voltage ramp requirements can set dV/dT pin with a single capacitor to ensure proper output ramp rates.

Many systems, such as SSDs, must not allow holdup capacitance energy to dump back through the FET body diode onto a drooping or shorted input bus. The BFET pin is for such systems. An external NFET can be connected “Back to Back (B2B)” with the TPS25927x output and the gate driven by BFET to prevent current flow from load to source.


  • 4.5-V to 18-V Protection
  • Integrated 28-mΩ Pass MOSFET
  • Absolute Maximum Voltage of 20 V
  • 1-A to 5-A Adjustable ILIMIT
  • ±8% ILIMIT Accuracy at 3.7A
  • Reverse Current Blocking Support
  • Programmable OUT Slew Rate, UVLO
  • Built-in Thermal Shutdown
  • UL 2367 Recognized – File No. E339631*
    • *RILIM ≤ 130 kΩ (5 A maximum)
  • Safe During Single Point Failure Test (UL60950)
  • Small Foot Print – 10L (3 mm x 3 mm) VSON

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Parametrics Compare all products in eFuses & hot swap controllers

Number of channels (#)
Vin (Min) (V)
Vin (Max) (V)
Imax (A)
Vabsmax_cont (V)
Current limit (Min) (A)
Current limit (Max) (A)
Overcurrent response
Current limit type
UL recognition
Fault response
Current limit function enabled
Ron (Typ) (mOhm)
Operating temperature range (C)
Package Group
Package size: mm2:W x L (PKG)
TPS259270 TPS259271
1     1    
Internal     Internal    
4.5     4.5    
18     18    
5     5    
20     20    
1     1    
5     5    
Analog Current Monitor     Analog Current Monitor    
Current Limiting     Current Limiting    
Adjustable     Adjustable    
Yes     Yes    
Latch Off     Auto Retry    
Always     Always    
28     28    
Catalog     Catalog    
-40 to 85     -40 to 85    
VSON | 10     VSON | 10    
10VSON: 9 mm2: 3 x 3 (VSON | 10)     10VSON: 9 mm2: 3 x 3 (VSON | 10)