Monolithic Power Systems Inc. MPQ5069GQV-AEC1-Z

Overview

MPQ5069GQV-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 automotive hot-swap protection switch with integrated 7mΩ power MOSFET, adjustable current limit (5–15A), ±10% current monitor accuracy, and 200ns short-circuit response. It protects battery-fed subsystems in infotainment, clusters, and ADAS against input transients, output shorts, inrush current, and thermal overload.

For engineers reviewing the MPQ5069GQV-AEC1-Z datasheet, MPQ5069GQV-AEC1-Z pinout, MPQ5069GQV-AEC1-Z application, or MPQ5069GQV-AEC1-Z equivalent, key selection criteria include its QFN-22 (3mm×5mm) AEC-Q100 package, dual-mode fault recovery (auto-retry/latch-off), IMON-based real-time current monitoring, and integrated damaged-MOSFET detection during startup.

Technical Context

The MPQ5069GQV-AEC1-Z implements a sense-FET current-limit architecture with external RSET programming, enabling precise 5–15A trip thresholds. Its fast-turnoff circuit activates at 25A secondary limit with 200ns total response time, independent of control-loop latency.

It integrates a charge-pump gate driver for full enhancement of the 7mΩ MOSFET across 6–28V input range, while internal UVLO (4.15–5.5V rising), thermal shutdown (167°C), and PG/FLTB open-drain status outputs provide system-level fault visibility and sequencing control.

Key Specifications

Pinout & Package

MPQ5069GQV-AEC1-Z is housed in a thermally enhanced QFN-22 (3mm × 5mm) package with exposed VIN pads (pins 21–22) and GND pad for low-impedance thermal and power paths.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive hot-swap protection applications.

Compared with TPS4H160-Q1 and MAX16054ATL+, MPQ5069GQV-AEC1-Z uniquely combines AEC-Q100 Grade 1 qualification, 7mΩ on-resistance, programmable 5–15A current limit, and integrated ±10% accurate IMON - making it optimal for space-constrained, high-reliability automotive subsystems requiring both protection and telemetry.

Availability

MPQ5069GQV-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, instrument clusters, ADAS camera modules, and telematics control units requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for MPQ5069GQV-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-performance power management ICs for automotive, industrial, and consumer applications.

The MPQ5069 product line delivers AEC-Q100-qualified hot-swap controllers with integrated MOSFETs, current monitoring, and fast-fault protection - designed specifically for 12V battery-fed automotive subsystems demanding robustness, telemetry, and compact layout.

FAQ

What is the minimum soft-start time for MPQ5069GQV-AEC1-Z, and how is it achieved?

The minimum soft-start time is approximately 1 ms, achieved by leaving the SS pin floating. In this configuration, an internal 4 µA current source charges the MOSFET gate directly, bypassing the external capacitor-controlled ramp. This provides fastest possible output voltage rise while still limiting inrush current via the device's inherent current-limit architecture.

How does the MPQ5069GQV-AEC1-Z detect a damaged MOSFET during startup?

During startup, the device monitors VOUT relative to VIN. If VOUT exceeds VIN − 1 V before the MOSFET is fully enhanced, it indicates the pass FET is shorted. The FLTB pin is immediately driven low, and the MOSFET remains off. Normal operation resumes only after VOUT drops to ≤ VIN − 1 V, confirming integrity of the power path.

Can the IMON output be used for closed-loop current regulation?

No - IMON provides only an analog voltage proportional to load current (±10% accuracy), with no feedback path to the internal control loop. It is intended for monitoring, diagnostics, and telemetry. Current regulation is handled exclusively by the internal current-limit amplifier and gate driver; IMON cannot modify switching behavior or override protection thresholds.

What is the purpose of the PD pin, and what happens when it is left floating?

The PD pin enables active output discharge via an internal 500 Ω pull-down resistor when VIN falls below UVLO or EN is disabled. When floating, discharge functionality is disabled - the output voltage decays only through natural load leakage and parasitic paths, which may cause unintended hold-up in downstream circuits.

How does the AUTO pin affect thermal fault recovery behavior?

When AUTO is grounded, thermal faults cause immediate latch-off - the MOSFET stays off until EN is toggled or VIN is cycled. When AUTO is floated or pulled >2.5 V, thermal faults trigger auto-retry: the device shuts down, cools by 28°C hysteresis, then automatically restarts after the TIMER capacitor discharges to 0.2 V, enabling hiccup-mode operation.

Is the PG pin functional when VIN = 0 V?

Yes - PG remains operational with only its external pull-up supply (e.g., 3.3 V). When VIN = 0 V, PG is actively pulled low regardless of EN state, providing unambiguous "no input power" indication to the host system even before main rail activation.

What is the maximum continuous output current supported by MPQ5069GQV-AEC1-Z at 125°C ambient?

At TA = 125°C, the maximum continuous output current is limited by thermal design. With θJA = 46°C/W on a 4-layer board, maximum allowable power dissipation is (150°C − 125°C)/46°C/W ≈ 0.54 W. At 7 mΩ RDS(ON), this corresponds to √(0.54 W / 0.007 Ω) ≈ 8.8 A - assuming adequate PCB copper area and airflow per MPS layout guidelines.