Monolithic Power Systems Inc. MPQ6526GUE-AEC1-Z

Overview

MPQ6526GUE-AEC1-Z from Monolithic Power Systems is a six-channel half-bridge motor driver IC with integrated DMOS power MOSFETs, serial SPI-compatible control interface, AEC-Q100 Grade 1 qualification, 0.9A per channel output current, and wettable-flank QFN-24 (5mm×5mm) packaging. It drives up to six independent DC loads in automotive body electronics such as seat adjusters, HVAC actuators, and mirror controls.

For engineers reviewing the MPQ6526GUE-AEC1-Z datasheet, MPQ6526GUE-AEC1-Z pinout, MPQ6526GUE-AEC1-Z application in automotive motor control, or MPQ6526GUE-AEC1-Z equivalent for AEC-Q100-compliant hex half-bridge drivers, this page delivers verified electrical specs, fault diagnostics, thermal pre-warning behavior, and serial protocol timing constraints directly from the official MPS Rev. 1.02 datasheet.

Technical Context

The MPQ6526GUE-AEC1-Z implements six independent high-side/low-side gate drivers with integrated charge pump, enabling full H-bridge operation per channel via serial register control. Its 16-bit input register supports individual HS/LS enable, open-load detection (OLD), short-circuit timer (SCT), and software enable (SE) bits.

Thermal management includes dual-threshold monitoring: pre-warning at 120–170°C (bit TP) and shutdown at 150–200°C with 15°C hysteresis; fault reporting occurs via open-drain FAULT pin and 16-bit status register readable on CS edge. Serial interface operates up to 3MHz with 3.3V/5V logic compatibility and daisy-chain capability.

Key Specifications

Pinout & Package

MPQ6526GUE-AEC1-Z uses a wettable-flank QFN-24 (5mm×5mm) package with exposed thermal pad. Pin 1 is marked by index area; pins 2 and 5 are NC. The package supports enhanced thermal dissipation (θ_JA = 36°C/W) and AOI-compatible solder joints.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex half-bridge motor driver applications.

Compared with TB9058FNG and DRV8876PWPR, MPQ6526GUE-AEC1-Z uniquely balances 6-channel serial control, AEC-Q100 Grade 1 compliance, wettable-flank packaging, and integrated diagnostics - making it optimal for cost-sensitive, space-constrained automotive body electronics where SPI integration and AOI support are mandatory.

Availability

MPQ6526GUE-AEC1-Z is available at Aetrix Electronics and suitable for automotive seat control, HVAC actuation, electric power steering auxiliary functions, and body control module mirror systems requiring stable component supply, AEC-Q100 compliance, and wettable-flank manufacturability.

Supply support for MPQ6526GUE-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, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ6526 product line targets automotive body electronics requiring robust, serially controlled motor drivers with integrated diagnostics and AEC-Q100 qualification - emphasizing reliability, space efficiency, and system-level fault visibility.

FAQ

What is the maximum allowable supply voltage (V_VS) for MPQ6526GUE-AEC1-Z?

The absolute maximum V_VS is 40V, but recommended operating range is 7V to 28V. Exceeding 40V risks permanent damage. An internal discharge circuit activates above ~37V to protect against voltage runaway during inhibit mode, especially in systems with reverse-polarity protection diodes.

How does open-load detection work on MPQ6526GUE-AEC1-Z?

When bit OLD is set low, a pull-down current is enabled on each low-side switch. If no load is connected, the corresponding LSx/HSx status bit in the output register reads high. For H-bridge configurations, open-load testing requires two-step sequencing: first disable all drivers, then activate one high-side driver while monitoring the inactive side's voltage level via status register.

Can MPQ6526GUE-AEC1-Z be daisy-chained with other devices?

Yes - the serial interface supports daisy-chaining using a single DI/CLK/CS bus. Data propagates through DO of one device to DI of the next. Each device requires its own CS line for individual addressing, but CLK and DI can be shared across the chain to reduce MCU pin count and simplify layout.

What is the purpose of the FAULT pin, and how is it electrically configured?

The FAULT pin is an open-drain, active-low output that asserts low on any detected fault: short-circuit, thermal shutdown, or under-voltage lockout. It requires an external pull-up resistor (typically 4.7kΩ to VCC). Multiple MPQ6526GUE-AEC1-Z devices can share a common FAULT line for system-level interrupt signaling.

Does MPQ6526GUE-AEC1-Z support both 3.3V and 5V logic levels?

Yes - the serial interface (DI, CLK, CS, DO) is fully compatible with 3.3V and 5V logic families. Input thresholds are defined as 0.3×V_VCC (low) and 0.7×V_VCC (high); DO output high level is V_VCC − 0.7V, ensuring interoperability with mixed-voltage microcontrollers without level shifters.

What thermal protection mechanisms are implemented?

MPQ6526GUE-AEC1-Z features dual thermal thresholds: pre-warning (120–170°C) sets bit TP in the status register, allowing firmware intervention; shutdown (150–200°C) disables all outputs and sets all status bits high. Both thresholds include 15°C hysteresis to prevent oscillation near trip points.

Is the QFN-24 (5mm×5mm) package of MPQ6526GUE-AEC1-Z lead-free and RoHS compliant?

Yes - all MPS parts, including MPQ6526GUE-AEC1-Z, are lead-free, halogen-free, and fully compliant with the EU RoHS directive. The wettable flank variant further supports IPC-A-610 Class 3 acceptance criteria for automotive electronics assembly.