General description

The NPS4053 is a 5.5 V, 55 mΩ load switch with

precision adjustable current limit from 110 mA to 2.5 A.

The NPS4053 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.

Features and benefits

• 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

• Specified from -40 °C to +125 °C

Applications

• USB ports/hubs, laptops, docking station and

desktops

• Set top box

• HDTV

• Optical socket protection

• Current limiting circuits