Monolithic Power Systems Inc. MPQ5072GG-AEC1-Z

Overview

MPQ5072GG-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified programmable load switch with integrated 50mΩ DMOS FET, 1A current limit (adjustable via ILIM resistor), 0.5V–5.5V input range, and fast 200ns short-circuit protection - deployed in automotive infotainment power rails and ADAS domain controllers for controlled power sequencing.

For engineers reviewing the MPQ5072GG-AEC1-Z datasheet, MPQ5072GG-AEC1-Z pinout, MPQ5072GG-AEC1-Z application, or MPQ5072GG-AEC1-Z equivalent, key selection criteria include its programmable current limit accuracy (±15% over temperature), push/pull PG output with 50µs delay, thermal shutdown hysteresis (30°C), and QFN-12 (2mm×2mm) package suitability for space-constrained automotive PCB layouts.

Technical Context

The MPQ5072GG-AEC1-Z integrates a charge-pump–driven low-R_DS(ON) power FET with a precision current-sense amplifier and auto-zero comparator to deliver ±15% current-limit accuracy across –40°C to +125°C. Its soft-start slew rate is set by an external capacitor on the SS pin, with internal 11µA constant-current source enabling predictable V_OUT ramp control.

Short-circuit response uses dual-threshold detection: primary regulation at ~1.4A (set by ILIM) and secondary fast-off at ~7A, triggering sub-200ns turn-off. The PG pin provides rail-to-rail push/pull signaling with 140–450mV voltage-gap threshold and 50µs propagation delay, supporting system-level power-good handshaking in automotive ECUs.

Key Specifications

Pinout & Package

MPQ5072GG-AEC1-Z is housed in a thermally enhanced QFN-12 (2mm × 2mm) package with exposed thermal pad. Pin 1 is marked by a dot; pins 6 and 11 plus the exposed pad are connected to VIN for optimal current handling and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS22919DNYR and NIS5132MN, MPQ5072GG-AEC1-Z uniquely combines AEC-Q100 Grade 1 qualification, programmable current limit, push/pull PG, and output discharge - making it the only option for automotive applications requiring coordinated power sequencing, fault containment, and extended temperature reliability.

Availability

MPQ5072GG-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS domain controllers, and telematics control units requiring stable component supply with full AEC-Q100 documentation and traceable lot history.

Supply support for MPQ5072GG-AEC1-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-efficiency power management ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ5072 belongs to MPS's automotive-qualified load switch product line, engineered specifically for reliable power sequencing, fault protection, and thermal resilience in harsh-temperature vehicle subsystems.

FAQ

What is the minimum SS capacitor value required for stable soft-start operation?

The MPQ5072GG-AEC1-Z requires a minimum 4.7nF ceramic capacitor on the SS pin to ensure the internal 11µA current source dominates the V_SS ramp. Using smaller values causes V_OUT rise time to depend on MOSFET gate charge, leading to inconsistent inrush control and potential current-limit overshoot during startup.

How does the ILIM resistor affect current-limit accuracy over temperature?

With R_ILIM = 24kΩ, the MPQ5072GG-AEC1-Z delivers 1.4A typical current limit at 25°C. Over –40°C to +125°C, the limit varies ±15% due to internal current-sense ratio drift and resistor TCR - using a 1% tolerance, 50ppm/°C metal-film resistor minimizes additional error.

Can the PG pin drive a 3.3V microcontroller input directly?

Yes. The PG pin is a push/pull output that sources up to V_CC (3.3V or 5V) and sinks 1mA at 0.3V. When V_CC = 3.3V, PG high is ≥3.2V and PG low is ≤0.3V - fully compatible with standard 3.3V CMOS inputs without external level-shifting components.

What is the thermal performance impact of connecting NC pins to VOUT?

Connecting pins 7, 8, and 10 (NC) to VOUT reduces θ_JA by ~8°C/W in a 4-layer PCB layout, per MPS thermal characterization. This improves sustained 1A operation margin at +125°C ambient by lowering junction temperature rise - recommended for thermally constrained automotive modules.

Does the MPQ5072GG-AEC1-Z support reverse current blocking?

No. The MPQ5072GG-AEC1-Z is a single-direction load switch with body diode conduction from VOUT to VIN when disabled. Reverse current flow is not blocked - external Schottky diodes or back-to-back FET configurations are required if bidirectional isolation is needed.

How does short-circuit protection behave after the initial 200ns fast-off event?

After the 200ns fast-off, the MPQ5072GG-AEC1-Z holds the FET off for 80µs, then attempts automatic recovery. If the short persists, it reduces the current limit to ~0.5A and cycles until thermal shutdown triggers at 150°C - preventing destructive latch-up while enabling graceful fault escalation.

Is the exposed thermal pad electrically connected to any internal node?

Yes. The exposed pad is internally tied to VIN. It must be soldered to a large PCB copper pour connected to the VIN net to ensure both thermal performance and current-carrying capacity - floating or grounded pads will cause overheating and premature thermal shutdown.