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

Overview

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

For engineers reviewing the MPQ3414BGJ-5-AEC1-P datasheet, MPQ3414BGJ-5-AEC1-P pinout, MPQ3414BGJ-5-AEC1-P application, or MPQ3414BGJ-5-AEC1-P equivalent, key selection criteria include its TSOT23-8 package, <1μA shutdown current, 2.8–4V input range, internal synchronous rectifier, and AEC-Q100 qualification for automotive ambient temperature (–40°C to +125°C).

Technical Context

The MPQ3414B uses current-mode PWM control with fixed 2.2MHz switching frequency and internal slope compensation to ensure stable operation across wide load ranges. Its dual-mode operation-Advanced Asynchronous Modulation (AAM) for light-load efficiency and Forced Continuous Conduction Mode (FCCM) for low-noise regulation-enables dynamic adaptation to varying automotive power demands.

Integrated protection includes over-voltage protection (OVP) triggering at 6V, short-circuit protection (SCP) with automatic recovery, thermal shutdown at ~155°C, and inrush current limiting during linear charge startup. Output disconnect fully isolates VOUT from VIN during shutdown, enabling true zero-output discharge and sub-1μA supply current.

Key Specifications

Pinout & Package

MPQ3414BGJ-5-AEC1-P is housed in a thermally enhanced TSOT23-8 package (2.9mm × 1.6mm × 0.85mm), optimized for high-density automotive PCB layouts with exposed PGND pad for thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS610995RTER and MAX17222ETA+T, MPQ3414BGJ-5-AEC1-P uniquely combines AEC-Q100 Grade 1 qualification, integrated output disconnect, fixed 5V regulation, and 2.2MHz operation - making it the only drop-in solution for automotive 5V secondary rails requiring full temperature compliance and zero-output discharge.

Availability

MPQ3414BGJ-5-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, telematics backup power, and body control module sensor interfaces requiring stable component supply with AEC-Q100 assurance and long-term lifecycle continuity.

Supply support for MPQ3414BGJ-5-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 core expertise in DC/DC converters, LED drivers, and motor drivers for automotive, industrial, and consumer markets.

The MPQ3414B belongs to MPS's automotive-grade synchronous boost converter product line, designed specifically for secondary 5V regulation in safety-critical and thermally demanding automotive subsystems where reliability, small size, and low quiescent current are mandatory.

FAQ

What is the maximum recommended output capacitance for MPQ3414BGJ-5-AEC1-P?

The datasheet specifies a minimum 22μF X5R/X7R ceramic output capacitor for stability, but no upper limit is defined. Practical designs use 22–47μF to balance transient response and board area. Larger values (>100μF) may cause soft-start delay extension or instability if ESR falls below 1mΩ - verify with load-step testing.

Can MPQ3414BGJ-5-AEC1-P operate with input voltage above 4V?

No - the absolute maximum VIN rating is 6.5V, but recommended operating VIN is strictly 2.8V to 4V. Exceeding 4V risks triggering minimum on-time limitation, causing excessive output ripple and potential OVP activation. For higher VIN, use a buck-boost or SEPIC topology.

How does the MODE pin affect efficiency at light loads?

When MODE is high, the device enters Advanced Asynchronous Modulation (AAM), reducing switching frequency under light loads to cut switching losses - achieving >80% efficiency at 1mA output. In FCCM (MODE low), efficiency drops to ~65% at same load due to fixed 2.2MHz operation.

Is external compensation required for MPQ3414BGJ-5-AEC1-P?

No - the MPQ3414B features fully internal compensation with optimized loop response for standard 0.68μH inductor and 22μF output capacitor. Adding external compensation components will destabilize regulation and void performance guarantees stated in the datasheet.

What happens during output short-circuit condition?

Upon short-circuit, VOUT collapses below VIN–0.3V, triggering immediate shutdown. After a 50μs delay, the device restarts in linear charge mode, limits inrush current to ≤0.8A, and resumes soft-start once fault clears - no latch-off or manual reset required.

Does MPQ3414BGJ-5-AEC1-P support adjustable output voltage?

No - this variant (indicated by "-5" in the part number) has factory-trimmed internal reference set to 5V. Adjustable versions (e.g., MPQ3414BGJ-AEC1-P) exist but require external resistor divider and lack the fixed 5V accuracy and stability of this grade.

What is the thermal performance of TSOT23-8 package under 0.5A continuous load?

With proper PCB layout (2-layer board, 1in² 2oz copper on PGND pad), θJA ≈ 100°C/W yields ~50°C junction rise at 0.5A/5V output - well within the –40°C to +125°C operating range. For sustained 0.5A in sealed enclosures, add thermal vias or local copper pour to reduce θJA below 70°C/W.