Nexperia USA Inc. NPS4053GH-Q100Z

Overview

NPS4053GH-Q100 from Nexperia is an AEC-Q100 Grade 1 qualified 5.5 V P-channel load switch with 55 mΩ typical R_DS(on) at 5.5 V, precision adjustable current limit (110 mA–2.5 A), active reverse-voltage protection (75 mV trip), and integrated thermal shutdown (155 °C). It serves as a protected power-path controller in automotive USB ports and ECU power distribution.

For engineers reviewing the NPS4053GH-Q100 datasheet, NPS4053GH-Q100 pinout, NPS4053GH-Q100 application, or NPS4053GH-Q100 equivalent, key selection criteria include programmable current-limit accuracy (±6 % at 1.2 A), reverse-voltage blocking response time (0.5 µs), FLG fault flag deglitch timing (8.5 ms overcurrent / 0.2 ms reverse voltage), and SOT8044-1 thermal performance (R_θJA = 63.4 °C/W).

Technical Context

The device implements a constant-current limiting architecture triggered when output load exceeds the resistor-programmed threshold, maintaining regulated current until fault removal. Its internal P-MOSFET features no body diode conduction path when disabled, eliminating backfeed from OUT to IN.

Reverse-voltage protection operates via a dedicated comparator that disables the switch within 0.5 µs when V_OUT exceeds V_IN by ≥75 mV. The FLG pin provides open-drain fault reporting for overcurrent, overtemperature (immediate assertion), and reverse-voltage events, each with distinct deglitch timing.

Key Specifications

Pinout & Package

SOT8044-1 (HWSON6) is a 2.0 × 2.0 × 0.75 mm thermally enhanced no-lead package with exposed thermal pad (soldered to PCB GND) and 0.65 mm pitch. Junction-to-ambient thermal resistance is 63.4 °C/W, enabling higher continuous current vs. SOT457.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar load switch applications.

Compared with TPS22919QPWRQ1 and MPQ2722GJ-AEC1, the NPS4053GH-Q100 uniquely combines sub-microsecond reverse-voltage detection, resistor-programmable current limit with ±6 % accuracy, and no-body-diode isolation - making it optimal for USB and safety-critical ECU power domains requiring bidirectional fault immunity.

Availability

NPS4053GH-Q100 is available at Aetrix Electronics and suitable for automotive USB ports, ECU power distribution, current-limiting circuits, and lighting control requiring stable component supply across extended temperature and AEC-Q100 lifecycle demands.

Supply support for NPS4053GH-Q100 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert specializing in high-performance, high-reliability logic, discrete, and MOSFET solutions, with leadership in automotive-qualified components.

The NPS4053-Q100 product line delivers AEC-Q100 Grade 1 load switches optimized for automotive power management, emphasizing precision current limiting, reverse-voltage immunity, and thermal robustness in compact packages.

FAQ

What is the minimum recommended output capacitance for USB applications?

The datasheet specifies a minimum 120 µF bulk capacitor at the OUT pin for USB port applications to meet transient regulation requirements during plug-in events. This value ensures voltage droop remains within USB specification limits under full 500 mA/900 mA load steps. For non-USB applications, output capacitance should be selected based on actual load transient profiles and acceptable ripple, typically starting from 10 µF for low-current logic rails.

How does the ILIM pin behave when left floating or shorted to GND?

The ILIM pin is internally protected: when shorted to GND, the device defaults to ~2.46 A current limit; when left floating, it defaults to ~110 mA. Both states are safe and functional, eliminating need for pull-up/pull-down resistors. This feature reduces BOM count and simplifies layout in cost-sensitive designs where precise current setting is not required.

Can the NPS4053GH-Q100 be used in hot-swap applications?

Yes - its built-in soft-start (0.2–1 ms controlled slew rate), precise current limiting, and fast reverse-voltage protection (0.5 µs response) make it suitable for hot-swap scenarios. The device limits inrush current during plug-in, prevents backfeed if downstream voltage is present, and asserts FLG within 8.5 ms for overcurrent events - enabling reliable system-level fault handling without external circuitry.

What thermal considerations apply to the SOT8044-1 package?

The SOT8044-1 package achieves R_θJA = 63.4 °C/W when the thermal pad is fully soldered to a 1-in² copper pour on the PCB. At 2 A continuous load and 25 °C ambient, junction temperature rise is ~80 °C (2 A² × 0.055 Ω × 63.4 °C/W), resulting in ~105 °C junction temperature - well below the 125 °C normal operating limit. Layout must ensure low-thermal-resistance GND connection to the pad.