Monolithic Power Systems Inc. MPQ7200GLE-AEC1-Z

Overview

MPQ7200GLE-AEC1-Z from Monolithic Power Systems is an 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 across 6V–42V input, used in automotive exterior lighting including turn indicators and DRLs.

For engineers reviewing the MPQ7200GLE-AEC1-Z datasheet, MPQ7200GLE-AEC1-Z pinout, MPQ7200GLE-AEC1-Z application, or MPQ7200GLE-AEC1-Z equivalent, key selection considerations include configurable topology (buck vs. buck-boost), thermal derating via NTC sensing, fault-indicated open/short LED protection, and spread-spectrum EMI reduction at 2.3MHz (buck) or 1.15MHz (buck-boost).

Technical Context

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

Protection logic integrates five fault monitors-LED open/short, OVP (18V), UVP (1.35V), OCP (6.3A peak), and thermal shutdown (170°C)-with FAULT pin asserting active-low signal and latch behavior on critical faults like ISET or IREF pin shorts.

Key Specifications

Pinout & Package

MPQ7200GLE-AEC1-Z is housed in a wettable flank QFN-19 (3mm × 4mm) package optimized for automated optical inspection (AOI) and thermal performance, with exposed PGND pad for heat dissipation and solder joint reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPQ7200GLE-AEC1-Z, MPQ7200GQ-AEC1-Z trades wettable flank reliability for lower assembly cost, while MPQ4425AGL-AEC1-Z sacrifices topology adaptability and thermal management for marginally higher efficiency in static buck applications.

Availability

MPQ7200GLE-AEC1-Z is available at Aetrix Electronics and suitable for automotive exterior lighting, ADAS illumination subsystems, and commercial vehicle signaling systems requiring stable component supply with AEC-Q100 qualification and long-term lifecycle assurance.

Supply support for MPQ7200GLE-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 MPQ7200 belongs to MPS's AEC-Q100 automotive LED driver product line, engineered specifically for robust, thermally adaptive exterior lighting in passenger cars and light trucks operating across harsh automotive environments.

FAQ

What topology configurations does MPQ7200GLE-AEC1-Z support?

The MPQ7200GLE-AEC1-Z supports two distinct topologies: buck-boost mode (up to 1.2A) when IREF is pulled to GND with ≤9.09kΩ, and buck mode (up to 3A) when IREF connects to GND with ≥14.7kΩ. The selection is resistor-based and irreversible during operation; no digital interface or register setting is involved.

How does the FAULT pin behave during LED open and short conditions?

The FAULT pin asserts active-low for LED open, short-to-GND, or short-to-battery faults, with a deglitch time of 20μs after startup and 25ms delay during initial power-up. It remains latched low until EN/DIM is held below 1.58V for >25ms to reset, ensuring persistent fault indication for safety-critical systems.

Can MPQ7200GLE-AEC1-Z operate with input voltages below 6V?

No - the VIN under-voltage lockout rising threshold is 6.0V (±0.25V), and operation below this level disables switching. During cold-crank events dipping to 5.2V, the device remains in UVLO and asserts FAULT only if VCC also falls below its 4.7V UVLO threshold; no brown-out recovery is supported.

What is the role of the DUTY pin in two-step dimming mode?

The DUTY pin sets the duty cycle (5–15% in 1% steps) for internal 500Hz two-step dimming. A resistor (RDUTY) between DUTY and AGND configures the level; if DUTY is shorted or open before startup, the IC latches off and FAULT goes low - preventing unintended dimming activation.

How is thermal derating implemented using the NTC pin?

The NTC pin sources current (5× IREF in buck-boost, 50× IREF in buck) into an external NTC thermistor network. When VNTC crosses 1.25V (±2.5%), current begins scaling down linearly; at 0.65V (±2.5%), output drops to 58% of nominal - enabling precise, programmable thermal foldback without microcontroller intervention.

Does MPQ7200GLE-AEC1-Z support analog dimming?

No - the MPQ7200GLE-AEC1-Z does not support analog (DC) dimming. Dimming is exclusively via PWM applied to EN/DIM (100Hz–2kHz) or internal two-step (500Hz) modes. There is no ISET voltage modulation or DAC-controlled current adjustment capability.

What is the maximum allowable PCB temperature rise for continuous 3A buck operation?

At TA = 25°C, the QFN-19 package has θJA = 48°C/W. With 3.9W max power dissipation and 150°C max junction temperature, the theoretical max ambient is 52°C for full 3A operation. Real-world designs using 2oz copper and thermal vias typically sustain 3A up to 70°C ambient with <110°C junction.