TPS2561 Dual Channel Precision Adjustable Current-Limited Power Switches | TI.com

TPS2561 (ACTIVE) Dual Channel Precision Adjustable Current-Limited Power Switches

 

Description

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.

Features

  • 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

Parametrics

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Part number Order Vin (Min) (V) Vin (Max) (V) Continuous current (Max) (A) Current limit (A) Enable Number of switches Rating
TPS2561 Order now 2.5     6.5     2.5     0.25 to 2.5     Active High     2     Catalog    
TPS2560 Order now 2.5     6.5     2.5     0.25 to 2.5     Active Low     2     Catalog    
TPS2560A Order now 2.5     6.5     2.5     0.25 to 2.5     Active Low     2     Catalog    
TPS2561A Order now 2.5     6.5     2.5     0.25 to 2.5     Active High     2     Catalog