NX5P2553 Precision adjustable current-limited power switch Rev. 1 6 July 2015 Product data sheet 1. General description The NX5P2553 is a precision adjustable current-limited power switch. The device includes undervoltage lockout, overtemperature, and reverse bias protection circuits designed to isolate the switch terminals when a fault condition occurs. It also has an overcurrent protection circuit to limit the output current. The device features two power switch terminals, one input (VIN), and one output (VOUT). It also consists of a current limit input (ILIM) for defining the overcurrent limit, an open-drain fault output (FAULT) to indicate when a fault condition has occurred, and an enable input (EN) to control the state of the switch. The overcurrent limit threshold can be programmed between 85 mA and 1.8 A using an external resistor between the ILIM and GND pins. The device has built-in soft-start. This feature controls the output rise time by minimizing current surges when the switch is enabled. Designed for operation from 2.5 V to 5.5 V, it is used in power domain isolation applications to protect from out of range operation. The enable input includes integrated logic level translation making the device compatible with lower voltage processors and controllers. 2. Features and benefits Wide supply voltage range from 2.5 V to 5.5 V I maximum 1.5 A continuous current SW 6 % current-limit accuracy at 1.8 A (typical) Meets USB current-limiting requirements Adjustable current limit from 85 mA to 1800 mA (typical) Constant current mode in overcurrent situation Overtemperature protection Very low ON resistance: 95 m (typical) for TSOP6 package Fast short-circuit switch-off response (2.0 s typical) ILIM short detection Reverse input-output voltage protection Built-in soft-start ESD protection: HBM ANSI/ESDA/JEDEC JS-001-2012 Class 2 exceeds 2000 V CDM JESD22-C101D exceeds 500 V IEC61000-4-2 contact discharge exceeds 8 kV for VOUT (with external capacitance) Specified from 40 Cto+85 C ambient temperatureNX5P2553 NXP Semiconductors Precision adjustable current-limited power switch 3. Applications USB port/hubs Digital TV and set-top boxes VoIP phones 4. Ordering information Table 1. Ordering information Type number Package Temperature range Name Description Version NX5P2553GV 40 Cto+85 C TSOP6 plastic surface-mounted package (TSOP6) 6 leads SOT457 NX5P2553GU 40 Cto+85 C HXSON6 plastic, thermal enhanced extremely thin small outline SOT1189-1 package no leads 6 terminals body 1.6 1.6 0.5 mm NX5P2553GU6 40 Cto+85 C HXSON6 plastic, thermal enhanced extremely thin small outline SOT1348-1 package no leads 6 terminals body 2.0 2.0 0.5 mm 5. Marking Table 2. Marking codes 1 Type number Marking code NX5P2553GV x53 NX5P2553GU x53 NX5P2553GU6 x53 1 The pin 1 indicator is on the lower left corner of the device, below the marking code. 6. Functional diagram reverse voltage comparator VIN CS VOUT current sense 4-ms DEGLITCH CHARGE PUMP CURRENT EN DRIVER LIMIT UVLO FAULT THERMAL GND SENSE 8-ms DEGLITCH ILIM aaa-007801 Fig 1. Logic diagram NX5P2553 All information provided in this document is subject to legal disclaimers. NXP Semiconductors N.V. 2015. All rights reserved. Product data sheet Rev. 1 6 July 2015 2 of 24