Monolithic Power Systems Inc. MP62041DQFU-LF-Z

Overview

MP62041DQFU-LF-Z from Monolithic Power Systems is a high-side load switch IC with active-high enable, 1.7V–5.5V input range, 85mΩ R_DS(on) at 4.5V, 2A continuous current rating, and 115μs soft-start rise time. It integrates a P-channel MOSFET and level-shift logic for independent EN voltage domain control, used in portable power sequencing and battery switchover circuits.

For engineers reviewing the MP62041DQFU-LF-Z datasheet, MP62041DQFU-LF-Z pinout, MP62041DQFU-LF-Z application, or MP62041DQFU-LF-Z equivalent, key selection criteria include enable polarity compatibility, thermal performance in UTQFN4 (θ_JA = 173°C/W), inrush current limiting, shutdown current (<1μA), and output slew rate control under varying VIN and load conditions.

Technical Context

The MP62041DQFU-LF-Z implements a high-side P-channel MOSFET switch with integrated gate driver and level-shifting circuitry, enabling EN logic signals referenced to a different supply than VIN. Its soft-start function controls dV/dt via internal slew-rate regulation, limiting inrush current during turn-on.

It operates across industrial temperature range (–40°C to +85°C) with thermal shutdown protection and supports bidirectional voltage translation between EN and VIN domains. The device does not include current-limiting foldback or fault reporting-only controlled turn-on/turn-off timing and low quiescent operation.

Key Specifications

Pinout & Package

MP62041DQFU-LF-Z uses a 4-pin UTQFN package (1.6mm × 1.2mm, 0.55mm height) with exposed thermal pad. Pin 2 is GND and must be soldered to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22915YZPR and NIS5020MNTBG, MP62041DQFU-LF-Z uniquely combines active-high enable, integrated level shifting, and programmable slew rate - making it optimal for mixed-voltage portable systems requiring robust inrush management without added components.

Availability

MP62041DQFU-LF-Z is available at Aetrix Electronics and suitable for portable electronics, battery-powered medical devices, and USB-C power management systems requiring stable component supply, RoHS-compliant packaging, and long-term production continuity.

Supply support for MP62041DQFU-LF-Z 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

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC-DC conversion, LED drivers, and power distribution solutions.

The MP6204x series belongs to MPS's high-side load switch product line, designed specifically for space-constrained, battery-sensitive applications demanding low quiescent current, precise inrush control, and flexible enable interface architecture.

FAQ

What is the maximum continuous output current for MP62041DQFU-LF-Z?

The MP62041DQFU-LF-Z supports 2A continuous output current at TA = +25°C with proper PCB thermal design. Derating applies above +25°C: 1.4A at +85°C ambient. This rating assumes full thermal pad soldering to ≥25mm² copper area and airflow-free conditions per JEDEC JESD51-7 4-layer board test setup.

Does MP62041DQFU-LF-Z include overcurrent protection?

No. MP62041DQFU-LF-Z provides only controlled turn-on/turn-off timing and thermal shutdown. It lacks cycle-by-cycle current limiting or fault latching. External current sensing or downstream polyfuse is required for overcurrent protection in safety-critical applications.

Can EN be driven by a 1.8V logic signal while VIN is 5V?

Yes. The built-in level shifter allows EN to operate independently of VIN. With VIH ≥1.2V and VIL ≤0.4V, a 1.8V GPIO fully satisfies the logic thresholds and safely controls the 5V output rail without external components.

What is the recommended input capacitance for stable operation?

A minimum 10μF ceramic capacitor between IN and GND is required per the datasheet. This suppresses input transients caused by switching noise or shared rail coupling. For systems with high di/dt loads, add a 100nF X7R ceramic in parallel for high-frequency decoupling.

Is the exposed thermal pad electrically connected internally?

Yes. Pin 2 (GND) is bonded directly to the exposed thermal pad. The pad must be soldered to a dedicated PCB ground plane with ≥4 thermal vias (0.3mm diameter) to ensure both electrical continuity and thermal performance. Floating or unconnected pads cause thermal runaway above 1A.

How does soft-start behavior change with different input voltages?

V_OUT rise time varies with VIN: 200μs at 1.7V, 115μs at 3.6V, and 75μs at 5.5V. Lower VIN slows gate charging due to reduced drive strength; designers must verify inrush remains within spec for worst-case low-VIN, high-capacitance load combinations.

What is the function of the body diode in the internal P-MOSFET?

The intrinsic body diode conducts reverse current from OUT to IN when OUT > IN. Continuous conduction is not recommended (per Absolute Maximum Ratings). Use external reverse-blocking diodes if backfeed risk exists, such as in multi-rail OR-ing configurations.