Monolithic Power Systems Inc. EV2344-J-00A

Overview

EV2344-J-00A from Monolithic Power Systems is a 26V/2A step-down converter evaluation board built around the MP2344GJ synchronous buck IC in TSOT23-6 package, delivering regulated 5V output with up to 2A continuous current, fixed 600kHz switching frequency, and full protection including OCP and thermal shutdown.

For engineers reviewing the EV2344-J-00A datasheet, EV2344-J-00A pinout, EV2344-J-00A application, or EV2344-J-00A equivalent, this board enables rapid validation of MP2344-based power designs across 7.5–26V input, supports adjustable output down to 3.3V, and provides test-ready efficiency, load regulation, and transient response data per Rev.1.0 documentation.

Technical Context

The EV2344-J-00A implements a complete reference design for the MP2344 - a high-frequency synchronous buck converter with integrated 95mΩ/45mΩ MOSFETs, internal soft-start, and power-save mode for light loads. It operates in CCM at 600kHz with no external compensation required.

Test results confirm stable 5V output under 0.01–2A load (±0.3% load regulation), line regulation within ±0.3% over 7.5–26V input, and peak efficiency of 95% at 12V_IN/5V_OUT/1A. Thermal rise remains ≤40°C at full 2A load.

Key Specifications

Availability

EV2344-J-00A is available at Aetrix Electronics and suitable for power supply validation, embedded system bring-up, and DC-DC topology benchmarking requiring stable component supply, documented test data, and manufacturer-verified layout practices.

Supply support for EV2344-J-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 semiconductor company specializing in high-performance analog and power ICs, with core expertise in DC-DC conversion, motor drivers, and LED lighting control.

The MP2344 product line targets space-constrained, high-input-voltage applications such as standby supplies and consumer displays, emphasizing integration, thermal robustness, and minimal external component count.

FAQ

What input voltage range is supported on the EV2344-J-00A?

The board accepts 7.5 V to 26 V DC input, verified across all test conditions in the Rev.1.0 report. Operation below 7.5 V may cause dropout or startup failure; above 26 V risks overstress on the MP2344GJ's internal MOSFETs and BST capacitor.

Can the output voltage be adjusted, and how?

Yes - VOUT is set by the R1/R2 feedback divider (80.6 kΩ / 15 kΩ). Replacing R1 allows adjustment down to 3.3 V per the MP2344's 0.8 V reference. The board includes pads for resistor replacement but no onboard potentiometer.

Does the board include thermal monitoring or reporting features?

No - the EV2344-J-00A has no onboard temperature sensor or telemetry circuitry. Thermal performance is characterized via case temperature measurements in the test report (≤40°C rise at 2A), and the MP2344GJ itself includes internal thermal shutdown that disables switching above ~150°C junction temperature.

Are the optional diodes D1 and D2 required for operation?

No - D1 and D2 are marked "NS" (Not Stuffed) in the BOM and serve only as optional snubbers for specific EMI mitigation scenarios. The board operates fully functional without them, as confirmed in all test waveforms and efficiency plots.

What is the purpose of the 10 pF capacitor C5 on the feedback node?

C5 (10 pF, C0G) is a noise-filtering capacitor placed directly at the FB pin to suppress high-frequency switching noise coupling into the error amplifier. Its value and placement are validated in the schematic and contribute to stable regulation under fast load transients.

Is the EV2344-J-00A RoHS-compliant and lead-free?

Yes - all components on the board, including the MP2344GJ IC, meet RoHS, lead-free, and halogen-free requirements per MPS's Quality Assurance policy. The board uses Murata GRM-series X7R/X5R/C0G ceramics and Yageo film resistors compliant with these standards.