Monolithic Power Systems Inc. MPQ3414BGJ-5-AEC1-Z

Overview

MPQ3414BGJ-5-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified synchronous step-up DC/DC converter delivering fixed 5V output with up to 0.5A average / 1A peak output current, 2.2MHz switching frequency, 52μA quiescent current, and integrated output disconnect. It operates from 2.8V–4V input and supports automotive secondary regulation and single-cell Li-ion backup power systems.

For engineers reviewing the MPQ3414BGJ-5-AEC1-Z datasheet, MPQ3414BGJ-5-AEC1-Z pinout, MPQ3414BGJ-5-AEC1-Z application, or MPQ3414BGJ-5-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, output disconnect capability for zero-load shutdown current (<1μA), internal synchronous rectification eliminating external Schottky diodes, and dual-mode operation (AAM/FCCM) for light-load efficiency optimization.

Technical Context

The MPQ3414B employs current-mode PWM control with internal compensation and soft-start, enabling stable regulation across 2.8V–4V input while maintaining fixed 5V output via a 0.6V internal reference and feedback divider. Its architecture integrates both high-side P-channel and low-side N-channel MOSFETs with R_DS(ON) of 80mΩ and 70mΩ respectively, supporting up to 85% efficiency at 0.5A load.

It features dual operating modes: Advanced Asynchronous Modulation (AAM) for high light-load efficiency and Forced Continuous Conduction Mode (FCCM) for low-noise, constant-frequency operation. Protection functions include over-voltage (6V OVP), short-circuit (SCP), thermal shutdown (150°C), and inrush current limiting during linear charge startup - all implemented without external components.

Key Specifications

Pinout & Package

MPQ3414BGJ-5-AEC1-Z is housed in a thermally enhanced TSOT23-8 package (2.9mm × 1.6mm × 0.85mm), optimized for automotive PCB space constraints and thermal dissipation (θ_JA = 100°C/W on 4-layer board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-up converter applications.

Compared with TPS610995RTER and MAX17222ELT+T, MPQ3414BGJ-5-AEC1-Z uniquely combines AEC-Q100 Grade 1 qualification, <1μA shutdown current via output disconnect, and integrated SCP/OVP with auto-recovery - making it the only option qualified for safety-critical automotive power rails demanding zero-backfeed and fail-operational behavior.

Availability

MPQ3414BGJ-5-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply, AEC-Q100 compliance, and long-term production continuity.

Supply support for MPQ3414BGJ-5-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 MPQ3414B belongs to MPS's automotive-grade DC/DC converter product line, engineered specifically for secondary regulation in harsh-environment vehicle subsystems requiring AEC-Q100 qualification, low IQ, and robust fault protection.

FAQ

What is the minimum input voltage required for startup?

The MPQ3414BGJ-5-AEC1-Z can start up from as low as 1.8V input using linear charge mode, though its specified operating range is 2.8V–4V. Startup below 2.8V is possible but may trigger minimum on-time limitations and increased output ripple; full performance is guaranteed only within the rated input range.

Does the device require external compensation components?

No - the MPQ3414BGJ-5-AEC1-Z features fully internal compensation and soft-start circuitry. Only five external components are required: input capacitor (≥10μF), output capacitor (≥22μF), inductor (0.47–1.2μH), and two feedback resistors to set the 5V output. No external RC networks or compensation capacitors are needed.

How does output disconnect function during shutdown?

When EN is pulled low, the internal P-channel HS-FET turns off, physically isolating the OUT pin from VIN. Simultaneously, the output capacitor discharges through internal paths, bringing VOUT to 0V. This eliminates reverse current and reduces supply current to <1μA, meeting automotive "zero-leakage" requirements for always-on domains.

Can the MODE pin be dynamically controlled during operation?

No - the MODE pin must remain static during normal operation. Switching between AAM and FCCM modes while the converter is active causes output disturbance, potential regulation loss, and undefined transient behavior. Mode selection should be finalized at power-up and held constant throughout runtime.

What is the maximum achievable output current at 5V?

The MPQ3414BGJ-5-AEC1-Z delivers up to 0.5A average output current continuously at 5V with 2.8V–4V input. Peak current capability reaches 1A for short durations (e.g., burst-mode sensor activation), limited by internal 3.6A switch current threshold and thermal derating above 85°C ambient.

Is the TSOT23-8 package lead-free and RoHS compliant?

Yes - MPQ3414BGJ-5-AEC1-Z is fully lead-free, halogen-free, and RoHS-compliant per EU Directive 2011/65/EU. MPS confirms green status on its official quality assurance portal, and the device meets JESD201A tin whisker mitigation requirements for automotive applications.

How does the device handle short-circuit events?

Upon short-circuit detection (VOUT dropping below VIN − 0.3V), the MPQ3414BGJ-5-AEC1-Z immediately shuts down, enters hiccup mode with 50μs recovery delay, then initiates soft-start and resumes regulation if the fault clears. This prevents thermal runaway and enables autonomous recovery without host intervention.