Monolithic Power Systems Inc. EV2019-33-N-00A

Overview

EV2019-33-N-00A from Monolithic Power Systems is a fully assembled and tested evaluation board for the MPQ2019GN-33 low-dropout linear regulator, designed to validate 3.3V/300mA power delivery from 4.3V–40V inputs in battery-powered industrial and automotive systems. It features 10µA quiescent current, 420mV dropout at full load, ±2% output accuracy, and thermal shutdown protection.

For engineers reviewing the EV2019-33-N-00A datasheet, EV2019-33-N-00A pinout, EV2019-33-N-00A application, or EV2019-33-N-00A equivalent, this board enables rapid validation of MPQ2019GN-33 performance under real-world input transients, load steps, and thermal stress-critical for ultra-low-power microcontroller supply design and battery longevity optimization.

Technical Context

The EV2019-33-N-00A implements the MPQ2019GN-33 SOIC8-EP regulator in a fixed 3.3V configuration with external feedback resistors omitted (R1/R2 populated per schematic), enabling direct evaluation of regulation stability, power-good assertion timing (PG pin), and dropout behavior across its full 4.3V–40V input range. Input filtering uses 1µF (C1) and 22µF (C5) X7R ceramics; output capacitance is 22µF (C5) + 47nF (C4) for transient response and noise suppression.

Test points for VIN, VOUT, GND, EN, PG, and PGDL support oscilloscope probing without soldering. The board's 2.5" × 2.5" footprint and 2.54mm test pins allow integration into automated test fixtures or benchtop validation setups while maintaining thermal dissipation capability up to 125°C junction temperature.

Key Specifications

Availability

EV2019-33-N-00A is available at Aetrix Electronics and suitable for industrial control HMI panels, automotive body electronics modules, and portable medical diagnostic devices requiring stable component supply, fast prototyping turnaround, and validated thermal performance data.

Supply support for EV2019-33-N-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 converters, LDOs, motor drivers, and LED drivers for industrial, automotive, and consumer markets.

The MPQ2019GN-33 product line targets high-reliability, wide-input linear regulation in harsh environments-designed specifically for battery-powered systems where ultra-low IQ, robust thermal protection, and AEC-Q100 qualification (MPQ variant) are mandatory.

FAQ

What input voltage range is supported on the EV2019-33-N-00A?

The board accepts 4.3V to 40V DC input, verified per MPQ2019GN-33 specifications. Operation below 4.3V causes dropout; above 40V risks damage. Input must be well-regulated or filtered-no internal overvoltage protection beyond the IC's absolute maximum rating of 42V.

How is the 3.3V output voltage set and trimmed?

Output is fixed at 3.3V via internal resistor divider; no external feedback components are required. R1 (1MΩ) and R2 (2.2nF) are populated per schematic but serve EN filtering-not voltage setting. Output accuracy is ±2% over temperature and line/load, as specified for MPQ2019GN-33.

Can the EN pin be used to disable the regulator during testing?

Yes. Pulling EN low (<0.4V) disables the regulator and reduces total board current to <1µA. The EN node is accessible via test point and routed through R2/C3 RC filter (1MΩ + 2.2nF) to suppress noise-induced turn-off during transient events.

What does the PG (Power Good) signal indicate, and how is it used?

PG goes high when VOUT reaches ≥92% of 3.3V (≥3.036V) and remains high until VOUT drops below that threshold. It drives an open-drain output referenced to VOUT, requiring an external pull-up to VOUT for logic-level interfacing with microcontrollers or FPGA reset controllers.

Is thermal performance characterized on this board?

Yes. The board uses the SOIC8-EP package with exposed pad soldered to a 2-layer 1oz copper PCB, achieving ≤45°C/W θJA under natural convection. Full thermal shutdown behavior (150°C Tj) and derating curves are documented in the EV2019-33-N-00A test report (Rev. 1.0, p.4–5).

Are all components on the board RoHS-compliant and lead-free?

Yes. All passives and the MPQ2019GN-33 IC are RoHS-compliant, halogen-free, and meet MPS green status requirements. Component PNs (e.g., Murata GRM31CR71H225KA88L, Yageo RC0603FR-07100KL) are listed in the Bill of Materials with full compliance documentation available upon request.