Monolithic Power Systems Inc. MPQ7920GRM-0000-AEC1-P

Overview

MPQ7920GRM-0000-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 automotive power management IC integrating four synchronous buck converters (4.5A/2.5A/4.5A/2A), five LDOs (including RTC-dedicated 10mA LDO), I²C/MTP programmability, and configurable power sequencing in a QFN-26 (3.5mm×4.5mm) wettable-flank package. It delivers stable 5V-system rail generation for infotainment and display electronics.

For engineers reviewing the MPQ7920GRM-0000-AEC1-P datasheet, MPQ7920GRM-0000-AEC1-P pinout, MPQ7920GRM-0000-AEC1-P application, or MPQ7920GRM-0000-AEC1-P equivalent, key selection criteria include its dual parallel-capable buck pairs, ±4kV HBM ESD rating, 2.7V–5.5V input range, 0.4V–3.5875V adjustable output with 12.5mV steps, and MTP-programmable power-on/off timing slots (0.5ms/2ms/8ms/16ms).

Technical Context

The MPQ7920GRM-0000-AEC1-P implements constant-on-time (COT) control across all four buck regulators to achieve fast transient response and stable operation without external compensation. Its switching frequency is adjustable up to 2.75MHz in CCM mode, enabling compact external magnetics and capacitors.

System-level flexibility is enabled by dual configuration interfaces: I²C (3.4MHz max, 1.4V VIH) for real-time dynamic voltage scaling and register access, and two-time programmable MTP for persistent power sequencing, soft-start timing, and default output settings-supporting automotive-grade reliability with full UVLO, OCP, OVP, and thermal shutdown protection.

Key Specifications

Pinout & Package

MPQ7920GRM-0000-AEC1-P is housed in a space-efficient QFN-26 (3.5mm × 4.5mm) package with wettable flanks for automated optical inspection (AOI) and enhanced solder joint reliability in automotive reflow processes.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail automotive PMIC applications.

Compared with PCF5140 and ISL78600, MPQ7920GRM-0000-AEC1-P uniquely balances high-current parallel buck capability, MTP-based traceable configuration, and compact wettable-flank packaging-making it optimal for cost-sensitive, space-constrained automotive infotainment platforms requiring field-programmable sequencing.

Availability

MPQ7920GRM-0000-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment head units, digital instrument clusters, and HUD systems requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for MPQ7920GRM-0000-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 solutions for automotive, industrial, and computing markets, with over 20 years of analog design expertise.

The MPQ7920 product line delivers integrated, AEC-Q100-qualified power management for 5V automotive subsystems-designed specifically to replace multi-chip discrete solutions in infotainment, display, and ADAS edge nodes.

FAQ

What is the MTP programming limit for MPQ7920GRM-0000-AEC1-P?

This standard sampling version supports two-time programmable (2TP) MTP writes-once during initial configuration and once for field update. Each write permanently stores power-on sequence, output voltages, soft-start times, and timing slot selections. No further changes are possible after second programming.

Can Buck 1 and Buck 3 be paralleled, and what is required?

Yes-Buck 1 and Buck 3 can be paralleled to deliver up to 9A combined output. Requires matching external inductors and output capacitors, synchronization via phase delay register setting, and shared feedback (FB1/FB3 tied together). Layout must mirror both power paths symmetrically to ensure current sharing within ±10%.

Does MPQ7920GRM-0000-AEC1-P support dynamic voltage scaling (DVS)?

Yes-via I²C interface, all four buck outputs can be adjusted in real time from 0.4V to 3.5875V in 12.5mV steps (or 7.4mV for 0.4V–2.2V range). DVS is supported during active operation without interrupting power delivery, enabling CPU frequency scaling and energy optimization.

What is the purpose of the AVIN pin, and how must it be connected?

AVIN supplies internal analog circuitry including bandgap reference, comparators, and I²C interface. It must be connected to the main 5V bus through a 4.7Ω resistor and bypassed with a 0.1µF ceramic capacitor to AGND. Direct connection without the resistor risks instability due to supply coupling into sensitive analog blocks.

How does the RSTO pin behave during power-up and fault conditions?

RSTO is an open-drain reset output that remains low until all enabled rails reach 90% of their target voltage (PG rising threshold). It stays asserted during thermal shutdown, OVP, or OCP events and releases only after recovery and stabilization-providing reliable CPU reset signaling compliant with automotive boot requirements.

Is there an evaluation kit available, and what does it include?

Yes-the EVKT-MPQ7920 kit includes the MPQ7920GRM evaluation board (EVQ7920-R-00A), USB-to-I²C interface (EVKT-USBI2C-02), and two MPQ7920-0000 sample ICs for MTP programming. It supports full register access, real-time voltage monitoring, and sequence validation via MPS's GUI software.