5.5 V, 55 mOhm load switch with precision adjustable current limit

The NPS4053-Q100 is a 5.5 V, 55 mΩ load switch with precision adjustable current limit from 110 mA to 2.5 A.

The NPS4053-Q100 switch limits the output current to a constant current by using a constant-current mode when the output load exceeds the current limit threshold or shorted. An internal voltage comparator disables the load switch when the output voltage is higher than the input to protect devices on the input side of the switch. The FLG pin is an active low output to indicate overcurrent, over temperature and reverse voltage conditions.

This product has been qualified to the Automotive Electronics Council (AEC) standard Q100 (Grade 1) and is suitable for use in automotive applications.

Features and benefits

  • Automotive product qualification in accordance with AEC-Q100 (Grade 1)

    • Specified from -40 °C to +125 °C

  • Input operating voltage range (VIN): 2.5 V to 5.5 V

  • Maximum continuous current (IMAX): 2 A

  • ON resistance (RDS(on)):

    • VIN = 5.5 V: 55 mΩ (typical)

    • VIN = 3.6 V: 65 mΩ (typical)

    • VIN = 2.5 V: 80 mΩ (typical)

  • Adjustable current limit: 110 mA to 2.5 A

  • ±6 % current limit accuracy at 1.2 A

  • ILIM pin protection: can be shorted to ground or left floating

  • Constant current during current limit

  • No body diode when disabled (no current path from pin OUT to pin IN)

  • Active reverse voltage protection

  • Built in soft start

  • UL 62368 recognition

  • SOT457 (TSOP6) and SOT8044-1 (HWSON6) package option

  • ESD protection:

    • HBM: ANSI/ESDA/JEDEC JS-001 class 2 exceeds 2000 V

    • CDM: ANSI/ESDA/JEDEC JS-002 class C2a exceeds 500 V

    • IEC 61000-4-2 contact discharge 8000 V

    • IEC 61000-4-2 air-gap discharge 15000 V


  • USB ports/hubs

  • Power distribution in Electronic Control Unit

  • Current limiting circuits

Note: Connect at least 120 µF capacitor at output for USB port application, other applications except USB choose output capacitor according to actual transient requirements.


Type numberPackagePackage informationReflow-/Wave solderingPackingStatusMarkingOrderable part number, (Ordering code (12NC))
( 9356 915 31147 )
( 9356 915 32125 )

Environmental information

Type numberOrderable part numberChemical contentRoHSRHF-indicatorLeadfree conversion date
Quality and reliability disclaimer

Documentation (6)

File nameTitleTypeDate
NPS4053_Q1005.5 V, 55 mOhm load switch with precision adjustable current limitData sheet2023-10-20
SOT8044-1plastic thermal enhanced very very thin Small Outline packages, no leads;6 terminals; 0.65 mm pitch; 2.0 mm x 2.0 mm x 0.75 mm bodyPackage information2023-12-04
MAR_SOT457MAR_SOT457 TopmarkTop marking2013-06-03
WAVE_BG-BD-1Wave soldering profileWave soldering2021-09-08
SOT457plastic, surface-mounted package (SC-74; TSOP6); 6 leadsPackage information2023-03-03
REFLOW_BG-BD-1Reflow soldering profileReflow soldering2021-04-06


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