Nexperia USA Inc. NPS4053GHZ

Overview

NPS4053GHZ from Nexperia is a 5.5 V, P-channel load switch with precision adjustable current limit (110 mA–2.5 A), 55 mΩ typical R_DS(on) at 5.5 V, active reverse-voltage protection (75 mV trip), and integrated thermal shutdown (155 °C). It serves as a protected power-path controller in USB ports, docking stations, and optical socket circuits where programmable overcurrent response and fault flagging are required.

For engineers reviewing the NPS4053GHZ datasheet, NPS4053GHZ pinout, NPS4053GHZ application, or NPS4053GHZ equivalent, this page delivers verified functional context, package-specific pin mapping, real-world current-limit configuration guidance, and validated alternative options for industrial and consumer power-rail protection designs.

Technical Context

The NPS4053GHZ implements a P-channel MOSFET-based load switch with constant-current limiting triggered by external resistor programming on the ILIM pin. Its internal current-sense amplifier enables ±6% accuracy at 1.2 A and supports auto-retry via FLG-to-ON feedback.

It integrates three independent protection mechanisms: overcurrent (8.5 ms deglitched), overtemperature (immediate FLG assertion at 155 °C), and reverse-voltage blocking (0.5 µs response to VIN–VOUT < –75 mV). The device operates across –40 °C to +125 °C and features no body diode conduction when disabled.

Key Specifications

Pinout & Package

SOT8044-1 (HWSON6) is a 2.0 × 2.0 × 0.75 mm thermally enhanced, leadless package with exposed thermal pad soldered to PCB ground for improved heat dissipation (R_θJA = 63.4 °C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22919DBVR and AP22653AW5-7, the NPS4053GHZ uniquely combines precision-adjustable current limiting, active reverse-voltage blocking, and thermal hysteresis in a 2 mm × 2 mm HWSON6 package-making it optimal for space-constrained, safety-critical USB and optical interface designs.

Availability

NPS4053GHZ is available at Aetrix Electronics and suitable for USB port protection, optical transceiver sockets, laptop docking stations, and set-top box power management requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for NPS4053GHZ 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 focused on essential efficiency technologies, delivering high-performance, reliable components for automotive, industrial, and consumer markets.

The NPS4053 belongs to Nexperia's precision load switch product line, engineered specifically for robust power-path protection in portable and interface-dense electronics where programmable current limiting and fault resilience are critical.

FAQ

What is the minimum recommended output capacitance for non-USB applications?

The datasheet specifies that output capacitance should be selected based on actual transient requirements-not a fixed value-for non-USB use cases. For loads with fast step-current demands (e.g., burst-mode transceivers), ≥47 µF low-ESR ceramic or polymer capacitors are typically used to maintain <2% output droop under 2 A/µs slew rates. Layout parasitics and trace inductance must also be minimized.

Can the FLG pin drive an MCU GPIO directly without a pull-up resistor?

No. FLG is an open-drain N-MOS output requiring an external pull-up resistor (typically 10–100 kΩ to VIN or another logic rail) to establish a valid HIGH state. Leaving FLG unconnected results in floating logic levels and unreliable fault detection. The datasheet confirms I_FLG sink capability up to 10 mA, sufficient for standard microcontroller inputs.

How does the NPS4053GHZ behave when the ILIM pin is left floating?

When ILIM is floating, the device defaults to a current limit of 110 mA (±20%). This is a factory-trimmed safe mode enabled by internal circuitry, eliminating risk of uncontrolled current during assembly or debug. The feature is explicitly validated in Section 12.2.3 and Table 7 (pin LIMIT open row), confirming operation across –40 °C to +125 °C.

Is the thermal pad (Pin 7) electrically connected internally?

No. The thermal pad in the SOT8044-1 package is not electrically connected to any internal node-it serves only as a mechanical and thermal interface. It must be soldered to a PCB ground plane to achieve the specified R_θJA = 63.4 °C/W and prevent junction overheating above 125 °C under 2 A continuous load. No electrical routing or vias to signal layers are required.