Monolithic Power Systems Inc. MPQ7200GLE-AEC1-P

Overview

MPQ7200GLE-AEC1-P from Monolithic Power Systems is a 42V, AEC-Q100 Grade 1 qualified synchronous buck-boost or buck LED driver IC with integrated 44mΩ/40mΩ MOSFETs, delivering up to 1.2A in buck-boost mode or 3A in buck mode, fixed 2.3MHz (buck) / 1.15MHz (buck-boost) switching, and PWM + internal two-step dimming for automotive exterior lighting.

For engineers reviewing the MPQ7200GLE-AEC1-P datasheet, MPQ7200GLE-AEC1-P pinout, MPQ7200GLE-AEC1-P application in DRL/fog lights, or MPQ7200GLE-AEC1-P equivalent for AEC-Q100 LED drivers, this page provides verified pin functions, thermal derating via NTC, fault signaling behavior, and mode-selection resistor thresholds confirmed from MPS Rev. 1.1 documentation.

Technical Context

The MPQ7200 operates in constant-current hysteretic control architecture, eliminating loop compensation while enabling sub-100ns transient response. Its topology is selected by resistor value on IREF: ≤9.09kΩ enables buck-boost (1.2A), ≥14.7kΩ enables buck (3A), with independent current-sense resistor (ISET) programming and dual-mode spread-spectrum EMI reduction.

Thermal protection uses remote NTC sensing with configurable derating-NTC current scales 5× in buck-boost and 50× in buck mode relative to IREF reference current-and fault reporting occurs via open-drain FAULT pin asserting low on LED short/open, OVP, OTP, or OCP latch events.

Key Specifications

Pinout & Package

MPQ7200GLE-AEC1-P is housed in a thermally enhanced QFN-19 (3mm × 4mm) wettable flank package with exposed PGND paddle for thermal dissipation and solder joint inspection. Pin 1 is marked by dot; pins 4/13 (VIN), 5/6/11/12 (PGND), and 15 (AGND) are assigned to separate ground domains per functional role.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED driver applications.

Compared with MPQ7200GLE-AEC1-P, MPQ7200GLE-Z omits automotive qualification but matches performance, while MPQ7220GLE-AEC1-P trades topology flexibility for higher buck current-making the original optimal for mixed-voltage automotive LED arrays requiring both buck and buck-boost operation.

Availability

MPQ7200GLE-AEC1-P is available at Aetrix Electronics and suitable for turn indicator lights, daytime running lights (DRLs), and fog lights requiring stable component supply with AEC-Q100 Grade 1 compliance and production-ready lead times.

Supply support for MPQ7200GLE-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 MPQ7200 product line targets automotive exterior lighting applications, delivering integrated, AEC-Q100-qualified LED drivers that reduce system size, improve thermal robustness, and simplify compliance with functional safety and EMI requirements.

FAQ

What topology does MPQ7200GLE-AEC1-P support, and how is it selected?

The MPQ7200GLE-AEC1-P supports both buck and buck-boost topologies. Selection is determined solely by the resistor value connected to the IREF pin: ≤9.09kΩ configures buck-boost mode (up to 1.2A), while ≥14.7kΩ configures buck mode (up to 3A). This resistor sets the reference current that scales NTC sensing and determines operating mode without firmware or external logic.

How does the FAULT pin behave during over-temperature events?

The FAULT pin asserts active-low on thermal shutdown (TSD) at 170°C typical, and also during thermal derating activation if NTC voltage crosses the 0.38V OTP threshold. The FAULT signal remains latched low until EN/DIM is pulled below 1.58V for >25ms to reset, ensuring persistent fault indication for system diagnostics and safety-critical response.

Can MPQ7200GLE-AEC1-P drive multiple LED strings independently?

No-MPQ7200GLE-AEC1-P is a single-channel constant-current driver designed for one LED string. It does not support multi-string current balancing or independent dimming per string. For multi-string applications, multiple MPQ7200 devices or a dedicated multi-channel controller (e.g., MPQ7290) must be used.

What is the purpose of the DUTY pin, and what happens if it's left unconnected?

The DUTY pin sets the duty cycle for internal two-step dimming (5–15% in 1% steps) when enabled. If left floating, the part detects an open fault on startup and latches off with FAULT asserted low. It must be either grounded via RDUTY or tied to AGND with appropriate resistance-never left unconnected.

Does MPQ7200GLE-AEC1-P require external compensation components?

No-MPQ7200GLE-AEC1-P uses constant-frequency hysteretic control architecture, which eliminates the need for external loop compensation components such as type-II or type-III networks. This simplifies design, improves transient response (<100ns), and enhances stability across input voltage and load variations without tuning.

How is LED current accuracy affected by input voltage variation?

LED current accuracy remains within ±5% over the full 6V–42V input range in buck mode and ±7% in buck-boost mode, as verified in MPS Rev. 1.1 characterization data. This stability is achieved through precision ISET voltage reference (0.592V typ) and current-mode hysteretic regulation, independent of VIN ripple or step changes.

What PCB layout considerations are critical for thermal performance?

Thermal performance depends on maximizing copper area connected to PGND pins (5,6,11,12) and the exposed paddle beneath the QFN-19 package. A minimum 4-layer board with 2oz copper on inner layers is recommended; thermal vias (≥12x 0.3mm) must connect the paddle directly to internal ground planes, and VIN/SW traces must be wide (>0.5mm) to minimize resistive loss and EMI.