Dual Channel Precision Adjustable Current-Limited Power Switches

Dual Channel Precision Adjustable Current-Limited Power Switches   - TPS2561


The TPS2560 and TPS2561 are dual-channel power-distribution switches intended for applications where precision current limiting is required or heavy capacitive loads and short circuits are encountered. These devices offer a programmable current-limit threshold between 250 mA and 2.8 A (typ) per channel through an external resistor. The power-switch rise and fall times are controlled to minimize current surges during turn on and off.

Each channel of the TPS256x devices limit the output current to a safe level by switching into a constant-current mode when the output load exceeds the current-limit threshold. The FAULTx logic output for each channel independently asserts low during overcurrent and overtemperature conditions.


  • Two Separate Current Limiting Channels
  • Meets USB Current-Limiting Requirements
  • Adjustable Current Limit, 250 mA to 2.8 A (typ)
  • ± 7.5% Current-Limit Accuracy at 2.8 A
  • Fast Overcurrent Response - 3.5-µs (typ)
  • Two 44-mΩ High-Side MOSFETs
  • Operating Range: 2.5 V to 6.5 V
  • 2-µA Maximum Standby Supply Current
  • Built-in Soft-Start
  • 15-kV / 8-kV System-Level ESD Capable
  • UL Listed – File No. E169910
  • CB and Nemko Certified

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Parametrics Compare all products in Precision Adjustable Limit Switch

Vin (Min) (V)
Vin (Max) (V)
Number of Switches
rDS(on) per FET (Typ) (mOhms)
Continuous Current (Max) (A)
Current Limit (A)
Current Limit Accuracy @ 1A
Current Limit Topology
Operating Temperature Range (C)
TPS2561 TPS2560 TPS2560A TPS2561A
2.5    2.5    2.5    2.5   
6.5    6.5    6.5    6.5   
2    2    2    2   
45    45    45    45   
2.5    2.5    2.5    2.5   
0.25 to 2.5    0.25 to 2.5    0.25 to 2.5    0.25 to 2.5   
+/-7.5% (2590mA min / 3005mA max)    +/-7.5% (2590mA min / 3005mA max)    2.1A Min / 2.5A Max Setting (Including Resistor)    2.1A Min / 2.5A Max Setting (Including Resistor)   
Active High    Active Low    Active Low    Active High   
Constant-Current    Constant-Current    Constant-Current    Constant-Current   
Catalog    Catalog    Catalog    Catalog   
-40 to 85    -40 to 85    -40 to 85    -40 to 85   
10VSON    10VSON    10VSON    10VSON   

Other qualified versions of TPS2561

Version Part Number Definition
Automotive TPS2561-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects