Monolithic Power Systems Inc. MPM3810AGQBE-AEC1-P

Overview

MPM3810AGQBE-AEC1-P from Monolithic Power Systems is an AEC-Q100 qualified, synchronous step-down DC/DC power module integrating MOSFETs and a 0.47µH inductor in a wettable-flank QFN-12 package. It delivers up to 1.2A peak output current across a 2.6V–6V input range, regulates output down to 0.6V with ±10% power-good window, and employs constant-on-time control for fast transient response-ideal for automotive camera modules and ECU power rails.

For engineers reviewing the MPM3810AGQBE-AEC1-P datasheet, MPM3810AGQBE-AEC1-P pinout, MPM3810AGQBE-AEC1-P application, or MPM3810AGQBE-AEC1-P equivalent, key selection criteria include its integrated inductor (reducing BOM count to only four external components), AEC-Q100 Grade 1 qualification (−40°C to +125°C junction), forced CCM operation, and PG/EN sequencing support for automotive power domains.

Technical Context

The MPM3810AGQBE-AEC1-P implements a constant-on-time (COT) control architecture with input voltage feed-forward, maintaining switching frequency stability (2.4–4.2 MHz) across input and load variations. Its internal high-side and low-side MOSFETs feature RDSON_P = 110–170 mΩ and RDSON_N = 60–130 mΩ, enabling high efficiency at light and full load.

It operates in forced continuous conduction mode (FCCM), supports 100% duty cycle in dropout, and integrates cycle-by-cycle over-current protection plus hiccup-mode short-circuit recovery. The PG pin provides open-drain power-good indication referenced to VIN with 550 kΩ internal pull-up and ±10% regulation window.

Key Specifications

Pinout & Package

MPM3810AGQBE-AEC1-P uses a wettable-flank QFN-12 package (2.5mm × 3.0mm × 0.9mm) with exposed thermal paddle for enhanced heat dissipation and solder-joint inspection capability. Pin 1 identification is marked on top surface; the exposed paddle must be soldered to a thermal pad on PCB for optimal thermal performance and electrical grounding.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down module applications.

Compared with MPM3810AGQB-AEC1, the -AEC1-P variant adds manufacturability assurance via wettable flanks; versus TPS82084SILR, it provides adjustable output, AEC-Q100 compliance, and full power-management features essential for OEM-tier automotive designs.

Availability

MPM3810AGQBE-AEC1-P is available at Aetrix Electronics and suitable for automotive rear camera modules, telematics control units, E-call systems, and infotainment domain controllers requiring stable component supply across extended temperature and long product lifecycles.

Supply support for MPM3810AGQBE-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 and modules, with design centers in the US, China, and Taiwan.

The MPM3810A product line delivers compact, AEC-Q100-qualified DC/DC modules targeting space-constrained automotive subsystems where integration, reliability, and ease of layout are critical-especially camera, radar, and ECU power rails.

FAQ

What is the purpose of the OUT_S pin on the MPM3810AGQBE-AEC1-P?

The OUT_S pin provides remote output voltage sensing to compensate for IR drop across PCB traces between the module's OUT pins and the load. Connecting OUT_S directly to the load-side of the output capacitor improves load regulation accuracy to ±1% across full current range, especially critical for precision analog or high-speed digital loads.

Can the MPM3810AGQBE-AEC1-P operate with input voltage below 2.6V?

No-the absolute minimum operating input voltage is 2.6V per datasheet specifications. Below this, UVLO prevents startup. During cold-crank events where battery dips to 2.5V, the device will shut down and restart once VIN rises above 2.6V (with 300 mV hysteresis). For sub-2.6V operation, a different regulator or pre-bias start-up circuit is required.

How does the constant-on-time (COT) control affect EMI performance?

COT control yields variable-frequency operation under light loads but maintains tight frequency clustering (2.4–4.2 MHz) under typical automotive loads due to input-voltage feed-forward. This reduces broadband EMI compared to traditional PWM while enabling simpler filtering-verified by conducted emissions testing per CISPR 25 Class 5 in typical automotive layouts.

Is the internal inductor shielded, and what is its saturation current?

Yes-the integrated inductor is fully shielded with ferrite core and rated for 2.1A typical saturation current (per datasheet current limit spec). Its DCR is 125 mΩ, contributing to high efficiency (>90% at 1A, VIN=5V, VOUT=1.2V) and low thermal rise in compact footprints.

What is the recommended PCB land pattern for the wettable flank QFN-12 package?

MPS specifies a 0.25 mm × 0.30 mm solder mask opening per flank lead, with 0.15 mm solder paste stencil aperture and 0.20 mm solder mask dam. The thermal paddle requires a 1.8 mm × 2.3 mm copper pad with 9×9 array of 0.3 mm diameter thermal vias to inner ground plane-details are in Package Drawing Rev. 2020-10-19, page 20.

Does the MPM3810AGQBE-AEC1-P support pre-biased output startup?

No-it does not support pre-biased output startup. If VOUT is externally held above the regulation threshold during enable, the device may enter undefined behavior or fail to regulate. Always ensure output is discharged or unpowered before asserting EN, especially in multi-rail systems with cross-coupled LDOs.

How is thermal performance affected by the wettable flank design?

The wettable flank variant (MPM3810AGQBE-AEC1-P) achieves θJA = 62°C/W vs. 65°C/W for the standard version-due to improved solder joint thermal conduction from leads to PCB. Combined with the exposed thermal paddle, this enables 1.2A continuous operation at +105°C ambient with 2-layer 2 oz copper PCB, per JEDEC JESD51-7 test board.