Monolithic Power Systems Inc. MPQ6526GUE-AEC1-P

Overview

MPQ6526GUE-AEC1-P from Monolithic Power Systems is a six-channel half-bridge motor driver IC with integrated DMOS power MOSFETs, serial SPI-compatible interface (up to 3 MHz), AEC-Q100 Grade 1 qualification, 0.9A per channel output current, and wettable-flank QFN-24 (5mm×5mm) packaging. It enables independent control of up to six DC loads in automotive body electronics such as seat adjusters, HVAC actuators, and mirror positioning systems.

For engineers reviewing the MPQ6526GUE-AEC1-P datasheet, MPQ6526GUE-AEC1-P pinout, MPQ6526GUE-AEC1-P application, or MPQ6526GUE-AEC1-P equivalent, key selection criteria include serial daisy-chain capability, open-load/short-circuit diagnostics, thermal pre-warning flag, fault reporting via open-drain FAULT pin, and ultra-low 6μA standby quiescent current across -40°C to +150°C junction temperature.

Technical Context

The MPQ6526GUE-AEC1-P implements six independent high-side/low-side gate drivers with integrated charge pump, enabling full H-bridge or half-bridge configurations per channel. Each output pair features matched R_DS(ON) (HS+LS) ≤2Ω at 150°C and supports inductive load switching with programmable short-circuit shutdown delay (1.5 ms or 12 ms).

Its 16-bit serial interface uses CS/CLK/DI/DO signals with tri-state DO and hardware/software enable (EN + SE bit), supporting status readback (TP, SCD, PSF, LSx/HSx states) without full register transfer. Fault handling includes over-temperature pre-warning (120–170°C), thermal shutdown (150–200°C), UVLO (6.5V rising threshold), and discharge circuit activation above ~37V VS.

Key Specifications

Pinout & Package

MPQ6526GUE-AEC1-P is housed in a wettable-flank QFN-24 (5mm×5mm) package with exposed thermal pad. Pin 1 is marked by index area on top surface; leads are coplanar ≤0.08mm. The package supports automated optical inspection (AOI) and X-ray void detection due to solderable side walls.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TB9051FTG and DRV8876PWPR, MPQ6526GUE-AEC1-P uniquely combines AEC-Q100 Grade 1 qualification, wettable flank packaging, integrated open-load/short-circuit diagnostics, and six-channel serial control in a single QFN-24 - optimizing BOM count, footprint, and functional safety compliance for multi-actuator automotive modules.

Availability

MPQ6526GUE-AEC1-P is available at Aetrix Electronics and suitable for automotive seat control, HVAC actuation, electronic parking brake, and power mirror adjustment requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

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

The MPQ6526 product line delivers AEC-Q100-qualified motor drivers for automotive body electronics, emphasizing integrated diagnostics, low-power standby, and robust packaging to meet stringent automotive reliability and safety standards.

FAQ

What is the maximum supply voltage the MPQ6526GUE-AEC1-P can withstand?

The absolute maximum VS supply voltage is 40V. Operation is specified from 7V to 28V; exceeding 40V risks permanent damage. An internal discharge circuit activates above ~37V to protect against capacitor charging during long inhibit periods, but this is a fail-safe mechanism-not an operating condition.

How does open-load detection work without external components?

When the OLD bit (bit13) is set low, the IC internally sources a 1.4–2.4mA pull-down current on each low-side output. An open load causes the corresponding LSx/HSx status bit in the DO register to go high. No external resistors or sense lines are required-detection is fully integrated and configurable per device.

Can multiple MPQ6526GUE-AEC1-P devices share the same SPI bus?

Yes. Devices support daisy-chaining: connect DI of device N+1 to DO of device N, while sharing CS, CLK, and DI (first device). Each device outputs its own status on its DO pin, allowing independent fault reporting without additional GPIOs or address decoding logic.

What is the purpose of the FAULT pin, and how should it be interfaced?

FAULT is an open-drain, active-low output that asserts when any channel experiences over-current, thermal shutdown, or UVLO. It must be pulled up externally (typically to VCC) and monitored by the host MCU. Do not apply more than 6V to FAULT; it sinks current only during fault conditions.

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

Yes. The serial interface (CS, CLK, DI, DO) is compatible with 3.3V and 5V logic supplies. Input thresholds are defined as 0.3×VCC (low) and 0.7×VCC (high); DO output high level is VCC−0.7V, ensuring interoperability with mixed-voltage MCU systems.

How is thermal pre-warning used in system-level fault mitigation?

The TP bit (bit0 of DO) asserts when junction temperature exceeds 120–170°C, before thermal shutdown occurs. The host MCU can read TP independently (by pulsing CS) and respond by reducing PWM duty, disabling non-critical channels, or triggering cooling-preventing shutdown and maintaining partial functionality.

Is the wettable flank feature mandatory for automotive use?

No, but it is strongly recommended for AEC-Q100 applications. Wettable flanks enable automated X-ray inspection of solder joints, improving process control and field reliability. The MPQ6526GUE-AEC1-P variant specifically includes this feature, unlike the GU-AEC1 (non-wettable) version.