Monolithic Power Systems Inc. EV2333H-TL-00A

Overview

EV2333H-TL-00A from Monolithic Power Systems is an evaluation board designed to demonstrate the MP2333H - a 1.2MHz, 3A, 18V-input synchronous step-down converter in SOT583 package with 75mΩ/40mΩ internal MOSFETs, 200µA quiescent current, and power-good indication. It delivers regulated 3.3V output at up to 3A from 4.2–18V input, supporting fast transient response and pre-bias startup in compact game console and digital TV power rails.

For engineers reviewing the EV2333H-TL-00A datasheet, EV2333H-TL-00A pinout, EV2333H-TL-00A application, or EV2333H-TL-00A equivalent, this board enables rapid validation of MP2333H's constant-on-time control loop, thermal shutdown behavior, hiccup-mode over-current protection, and soft-start programmability under real load transients and input ripple conditions.

Technical Context

The EV2333H-TL-00A implements the MP2333H IC in a fully assembled, tested layout with 1.5µH power inductor (DCR = 11.5mΩ), 22µF ×2 input capacitance, and 22µF + 1µF + 6.8nF + 1nF output filtering. It supports forced PWM and auto-mode operation, with EN pin threshold at 1.3V (ON) / <1V (OFF) and PG open-drain output requiring external pull-up.

Test data confirms 92% peak efficiency at 12V_IN/3.3V_OUT/3A, ±15mV output ripple under full load, 2ms startup time, and stable short-circuit recovery with hiccup mode. Layout follows MPS-recommended thermal pad grounding and high-frequency switching node minimization per Rev.1.0 schematic.

Key Specifications

Availability

EV2333H-TL-00A is available at Aetrix Electronics and suitable for power supply validation, DC-DC reference design verification, and embedded system bring-up requiring stable component supply, repeatable lab characterization, and production-ready layout guidance.

Supply support for EV2333H-TL-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, LED drivers, and motor control solutions.

The EV2333H-TL-00A belongs to MPS's evaluation board portfolio for its MP2333H synchronous buck converter family, engineered for space-constrained consumer electronics demanding high efficiency, fast transient response, and robust protection in 4.2–18V input systems.

FAQ

What input voltage range is supported on the EV2333H-TL-00A?

The board supports 4.2V to 18V DC input, as specified for the MP2333H IC. Testing was performed at 5V, 12V, and 18V, with efficiency curves and thermal performance documented across this full range in the Rev.1.0 report.

How is output voltage set, and can it be adjusted?

V_OUT is fixed at 3.3V by R1 (40.2kΩ) and R2 (13kΩ) forming the feedback divider. The schematic shows provision for changing these resistors; no solder jumpers or DIP switches are required for reconfiguration.

Does the board include power-good (PG) functionality, and how is it used?

Yes - PG is an open-drain output routed to JP1 Pin 3. It asserts high when V_OUT is within ±10% regulation. A 100kΩ pull-up to 3.3V (R8) is installed; users may substitute external VCC sources per application requirements.

What is the purpose of the "NS" (No-Stock) components listed in the BOM?

C1B and C6 are marked "NS" (Not Stuffed) in the bill of materials - they are footprint placeholders only. No capacitors are mounted at those locations on the shipped board, and their omission has no impact on baseline 3.3V operation.

Can the board operate with pre-biased output voltage?

Yes - the MP2333H IC supports pre-bias startup, and this capability is preserved on the EV2333H-TL-00A. Test waveforms in Section 3 of Rev.1.0 confirm clean startup into a pre-charged 3.3V rail without reverse current or oscillation.

Is thermal performance data available for continuous 3A operation?

Yes - thermal images and temperature rise measurements under 12V_IN/3.3V_OUT/3A steady-state load are included in the Rev.1.0 report. The SOT583 IC case temperature remains ≤65°C with 200LFM airflow, confirming adequate copper pour and thermal pad design.