Monolithic Power Systems Inc. EV3410DJ-00A

Overview

EV3410DJ-00A from Monolithic Power Systems is an evaluation board for the MP3410 synchronous boost converter IC, configured to deliver a regulated 3.3V/300mA output from a 1.8V–3.0V input. It features a 500kHz switching frequency, internal compensation, soft-start, and output disconnect during shutdown - enabling compact, low-component-count power solutions for portable battery-powered systems.

For engineers reviewing the EV3410DJ-00A datasheet, EV3410DJ-00A pinout, EV3410DJ-00A application, or EV3410DJ-00A equivalent, this board provides verified reference design implementation, adjustable output voltage (VIN to 6V), efficiency characterization up to 300mA, and full BOM with TSOT23-5 packaged MP3410 IC and validated external components.

Technical Context

The EV3410DJ-00A implements the MP3410 - a P-channel synchronous rectified boost controller with integrated 0.1Ω high-side switch and 0.25Ω synchronous rectifier. Its fixed 500kHz PWM operation enables use of small 4.7µH inductors and 10µF ceramic capacitors, while internal compensation eliminates loop compensation components.

Shutdown mode achieves 0.1µA quiescent current and fully isolates VOUT from VIN via the P-MOSFET's reverse-blocking capability. Output voltage is set by a resistor divider (R1/R2) referencing the 1.2V FB pin, supporting adjustment from VIN to 6V using standard 1% resistors.

Key Specifications

Availability

EV3410DJ-00A is available at Aetrix Electronics and suitable for portable audio playback, digital imaging, handheld medical sensors, and low-power IoT edge nodes requiring stable component supply and rapid prototyping validation.

Supply support for EV3410DJ-00A 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 analog semiconductor company specializing in high-performance power management ICs, including DC/DC converters, LED drivers, and motor drivers for consumer, industrial, and automotive markets.

The MP3410 product line delivers ultra-low-input-voltage synchronous boost converters targeting space-constrained, battery-operated applications where efficiency, small solution size, and output disconnect are essential.

FAQ

What is the default output voltage and how is it set?

The EV3410DJ-00A is factory-configured for 3.3V output using R1 = 178kΩ and R2 = 100kΩ, referencing the MP3410's 1.2V feedback threshold. The formula VOUT = 1.2V × (1 + R1/R2) allows recalculating R1 for any target between VIN and 6V, with standard 1% resistor values recommended.

Can the board operate from a 1.5V input source?

No - the MP3410 IC has a minimum operating input voltage of 1.8V per its datasheet. Attempting operation below 1.8V will result in no regulation or intermittent startup; the board is not rated for 1.5V alkaline cell direct operation without pre-regulation.

Is output voltage adjustment supported without soldering?

No - R1 and R2 are populated 0805 surface-mount resistors. Adjustment requires desoldering R1 and replacing it with a new value; the board does not include potentiometers or jumper-selectable resistor networks for on-the-fly tuning.

Why is an external Schottky diode recommended above 4V output?

Above 4V, the internal P-MOSFET's body diode conduction during light-load discontinuous conduction mode (DCM) can cause reverse current flow and instability. Adding an external Schottky (e.g., MBR0520L) across SW–OUT clamps reverse voltage and improves regulation fidelity at higher VOUT settings.

Does the board include input overvoltage or reverse-polarity protection?

No - the EV3410DJ-00A has no integrated input protection circuitry. Users must ensure applied VIN stays within 1.8V–3.0V and observe correct polarity; exceeding 3.0V risks damaging the MP3410 IC, which lacks internal overvoltage clamp beyond absolute maximum ratings.

How is enable control implemented on this board?

The EN pin of the MP3410 is tied directly to VIN by default, enabling the IC automatically upon power-up. To disable, users must disconnect EN from VIN and drive it low externally - no onboard pull-down or header is provided for active-low enable control.