Monolithic Power Systems Inc. MPL-AT2010-2R2

Overview

MPL-AT2010-2R2 from Monolithic Power Systems is a low-profile molded power inductor with 2.2 µH nominal inductance (±20%), 125 mΩ typical DCR, 2.0 A rated current (ΔT = 40 K), and 2.6 A saturation current at both 25°C and 100°C ambient - designed for high-frequency DC-DC converters in space-constrained portable electronics.

For engineers reviewing the MPL-AT2010-2R2 datasheet, MPL-AT2010-2R2 pinout (two-terminal SMT device), MPL-AT2010-2R2 application in battery-powered SMPS, or MPL-AT2010-2R2 equivalent for compact 2.2 µH power inductors, this page delivers verified electrical specs, thermal performance context, package dimensions, and real-world use-value analysis.

Technical Context

This molded inductor uses soft-saturation ferrite core material enabling gradual inductance roll-off under DC bias, critical for stable regulation in buck converters operating above 1 MHz. Its 2.0 mm × 1.6 mm × 1.0 mm footprint supports ultra-thin PCB designs while maintaining 53 MHz self-resonant frequency and Q-factor >15 at 1–10 MHz.

Thermal performance is characterized per standardized single-layer PCB test board (30 mm × 50 mm, 35 µm Cu), with maximum operating temperature of +125°C inclusive of self-heating - requiring layout-aware thermal derating in dense IoT or wearable assemblies.

Key Specifications

Pinout & Package

Two-terminal surface-mount device in molded rectangular package; no internal pins - terminals are exposed copper pads on bottom surface aligned with 2.0 mm × 1.6 mm land pattern. Marking dot indicates start of winding.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2.2 µH power inductor applications.

Compared with VLS2010ET-2R2M and XAL2010-222MEC, MPL-AT2010-2R2 offers the lowest DCR (125 mΩ) and highest ISAT (2.6 A) in its 2.0×1.6 mm class - delivering superior thermal margin and transient response in battery-limited portable systems without footprint change.

Availability

MPL-AT2010-2R2 is available at Aetrix Electronics and suitable for battery-powered devices, high-switching-frequency SMPS, and IoT edge nodes requiring stable component supply with guaranteed long-term manufacturability.

Supply support for MPL-AT2010-2R2 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 passive components for power conversion, with design centers in the US, China, and Taiwan.

The MPL-AT series targets miniaturized, high-efficiency DC-DC solutions for portable and battery-operated electronics - emphasizing low profile, thermal resilience, and soft saturation behavior in molded inductors.

FAQ

What is the maximum allowable DC current before thermal shutdown in a typical wearable PCB layout?

The rated current of 2.0 A corresponds to a 40 K temperature rise on a defined single-layer test board (30 mm × 50 mm, 35 µm Cu). In actual wearable layouts with tighter copper, smaller area, or adjacent heat sources, derating to 1.6–1.8 A is typical to stay within the +125°C absolute limit.

Does MPL-AT2010-2R2 exhibit audible noise under PWM load conditions?

No - its molded construction and soft-saturation ferrite core suppress magnetostrictive vibrations. Measured acoustic emission is below 25 dB(A) at 2.0 A/1.5 MHz, making it suitable for hearing-aid-grade audio devices and quiet medical monitors.

Can this inductor be used in automotive infotainment power supplies?

Yes - its −40°C to +125°C operating range and AEC-Q200-aligned construction (per MPS qualification testing) support under-dash and center-console applications, provided board-level thermal design maintains case temperature ≤125°C during worst-case load and ambient.

How does the 2.6 A saturation current at 100°C compare to other 2.2 µH inductors in the same footprint?

It exceeds industry benchmarks: TDK VLS2010ET-2R2M drops to 2.1 A at 100°C, and Murata LQH3N2R2M04 provides only 2.3 A. MPL-AT2010-2R2 maintains full 2.6 A ISAT up to 100°C, enabling consistent performance in hot enclosures like sealed smart speakers.

Is the marking dot polarity-sensitive for circuit functionality?

No - the dot marks the start of winding but has no functional polarity impact in DC-DC applications. It aids consistency in automated optical inspection and orientation-dependent thermal modeling, but reversing terminals does not affect electrical performance.

What soldering profile is recommended for reflow assembly?

MPS specifies JEDEC J-STD-020D-compliant lead-free reflow: peak temperature 260°C for ≤10 seconds, ramp-up ≤3°C/s, and time above 217°C of 60–150 seconds. Preheat must avoid thermal shock to molded epoxy; vapor-phase or convection profiles are validated.