Monolithic Power Systems Inc. MPQ5073GG-AEC1-P

Overview

MPQ5073GG-AEC1-P from Monolithic Power Systems is an AEC-Q100 qualified 2A load switch with programmable current limit, integrated 50mΩ DMOS FET, soft-start control via external capacitor, output discharge, and push-pull PG indicator - designed for power rail sequencing and inrush suppression in automotive infotainment and ADAS domain controllers operating from 0.5V to 5.5V input.

For engineers reviewing the MPQ5073GG-AEC1-P datasheet, MPQ5073GG-AEC1-P pinout, MPQ5073GG-AEC1-P application, or MPQ5073GG-AEC1-P equivalent, key selection criteria include programmable ILIM resistor-based current limiting (1.4A typical), <200ns short-circuit response, thermal shutdown at 150°C, and QFN-12 (2mm×2mm) package compatibility with space-constrained automotive PCB layouts.

Technical Context

The MPQ5073GG-AEC1-P implements a sense-FET topology with internal charge pump driving a low-R_DSON DMOS power switch, enabling precise current regulation independent of input voltage. Its ILIM pin accepts an external resistor to set overload threshold per I_LIMIT = (1/R_ILIM) × 33000 (at V_IN = 3.6V), with typical accuracy across –40°C to +125°C.

It integrates dual protection layers: primary current-limit regulation (20µs response) and secondary fast-off circuitry (200ns response at ~7A peak), plus thermal shutdown with 30°C hysteresis. The PG pin delivers push-pull status with 50µs delay and 140–450mV voltage-gap detection between V_OUT and V_IN.

Key Specifications

Pinout & Package

MPQ5073GG-AEC1-P uses a thermally enhanced QFN-12 (2mm × 2mm) package with exposed thermal pad (pins 6, 11, and exposed pad connected to VIN). Pin 7/8/10 are NC but recommended to connect to V_OUT for improved thermal performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22919DCKR and NIS5132MN, MPQ5073GG-AEC1-P uniquely combines AEC-Q100 qualification, programmable current limit, 50mΩ R_DSON, push-pull PG, and 200ns short-circuit response - making it the only option meeting full ISO 26262 power-switching requirements for modern automotive domain controllers.

Availability

MPQ5073GG-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, and telematics control units requiring stable component supply under AEC-Q100 compliance and extended temperature operation.

Supply support for MPQ5073GG-AEC1-P 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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ5073 belongs to MPS's automotive-grade load switch product line, engineered specifically for robust power rail control in safety-critical vehicle subsystems - emphasizing low R_DSON, fast fault response, and AEC-Q100 reliability.

FAQ

What is the minimum input voltage supported by MPQ5073GG-AEC1-P?

The MPQ5073GG-AEC1-P operates down to 0.5V input voltage, enabling use in low-V_IN always-on domains such as backup battery rails and real-time clock power supplies. This is verified across –40°C to +125°C and confirmed in the Absolute Maximum Ratings table (VIN ≥ –0.3V, Recommended Min = 0.5V).

How is current limit set, and what resistor value gives 2A?

Current limit is set by connecting a resistor from ILIM to GND. Using the formula I_LIMIT = 33000 / R_ILIM (kΩ), a 15kΩ resistor yields 2.2A - matching the typical 2A load with 10% margin. This relationship holds across temperature and is validated in Electrical Characteristics Table (R_ILIM = 15kΩ → I_OUT = 1.4A min, 2.2A typ).

Does MPQ5073GG-AEC1-P support output discharge during disable?

Yes - MPQ5073GG-AEC1-P includes an internal 200Ω pull-down resistor between V_OUT and GND that activates automatically when EN is low. This discharges residual output capacitance, preventing floating voltages that could interfere with downstream logic or violate safety isolation requirements.

What is the thermal performance of the QFN-12 package?

The QFN-12 (2mm×2mm) package has θ_JA = 80°C/W and θ_JC = 16°C/W when mounted on a 4-layer PCB per JESD51-7. With 2A load and 50mΩ R_DSON, power dissipation is ~200mW, resulting in ~16°C junction rise above ambient - well within the 125°C max operating temperature.

Is the PG pin truly push-pull, and what are its voltage thresholds?

Yes - PG is a true push-pull output (not open-drain). It drives high to V_CC (min 3.2V at V_CC = 3.3V) or low to GND (max 0.3V at 1mA sink). Activation occurs when |V_IN–V_OUT| falls below 280mV, with 50µs delay; deactivation triggers at >340mV gap - providing clean rail-status signaling for sequencers.

Can MPQ5073GG-AEC1-P replace discrete MOSFET + gate driver solutions?

Yes - it integrates a 50mΩ DMOS FET, charge pump gate driver, current-sense amplifier, thermal sensor, and protection logic into one QFN-12 package. This replaces ≥4 discrete components (MOSFET, driver, sense resistor, comparator) while improving response time, accuracy, and board area efficiency.

What is the short-circuit fault recovery behavior?

Upon short detection (<200ns), MPQ5073GG-AEC1-P forces immediate turn-off for 80µs, then attempts automatic restart. If short persists, it reduces current limit and cycles until thermal shutdown (150°C) occurs - ensuring controlled fault containment without latch-up or uncontrolled oscillation.