Monolithic Power Systems Inc. EV2019-N-00A

Overview

EV2019-N-00A from Monolithic Power Systems is a fully assembled and tested evaluation board for the MPQ2019GN low-quiescent-current linear regulator, designed to validate 5V/300mA power delivery from 6–40V input in high-voltage battery systems. It features 420mV dropout at full load, ±2% output accuracy, and operates across –40°C to +125°C junction temperature.

For engineers reviewing the EV2019-N-00A datasheet, EV2019-N-00A pinout, EV2019-N-00A application, or EV2019-N-00A equivalent, this board enables rapid validation of MPQ2019GN performance under real-world load transients, thermal stress, and wide-input-range conditions typical in automotive and industrial power subsystems.

Technical Context

The EV2019-N-00A implements the MPQ2019GN SOIC8-EP regulator in a fixed 5V output configuration with external feedback resistors (R3=121kΩ, R4=40.2kΩ) and integrated thermal shutdown. Input filtering uses 1µF (C1) and output stabilization employs 22µF ceramic (C5) plus 1206/1210 MLCCs.

It supports 6–40V input operation with ground current as low as 10µA at no load, enabling ultra-low-power system validation. The board includes test points for VIN, VOUT, EN, FB, PG, and PGDL signals, and uses 2.54mm golden-pin headers for easy probing and load connection.

Key Specifications

Availability

EV2019-N-00A is available at Aetrix Electronics and suitable for automotive power validation, industrial sensor node development, battery-powered medical device prototyping, and ultra-low-power MCU subsystem testing requiring stable component supply and documented reference design fidelity.

Supply support for EV2019-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.

The EV2019-N-00A belongs to MPS's evaluation board product line, engineered specifically to accelerate design-in of their high-input-voltage, low-I_Q linear regulators into safety-critical and energy-constrained applications.

FAQ

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

The board accepts 6V to 40V DC input, verified per the MPQ2019GN's operational specification. This range accommodates 12V lead-acid, 24V industrial, and 36V lithium-tethered battery systems without external regulation. Input must be well-filtered; the board includes only 1µF input capacitance, so users should add bulk capacitance for high-ripple sources.

Does the EV2019-N-00A support adjustable output voltage?

No - it is configured for fixed 5V output using precision resistor dividers (R3=121kΩ, R4=40.2kΩ). The FB pin is accessible via test point, allowing users to replace R3/R4 for custom output voltages per MPQ2019GN's feedback equation: V_OUT = 0.8V × (1 + R3/R4). No solder jumpers or DIP switches are provided.

How is enable and power-good functionality implemented?

The EN pin is pulled high via R5 (100kΩ), enabling default startup; it can be externally pulled low to disable regulation. PG (Power Good) is active-high and asserts when VOUT reaches 90% of nominal (≥4.5V); PGDL is an open-drain version. Both signals are routed to 2.54mm headers for integration with host controller GPIOs or status LEDs.

What thermal performance can be expected during continuous 300mA operation?

At 300mA and VIN = 12V, junction temperature rise is ≤25°C above ambient due to the SOIC8-EP package's low θ_JA and onboard copper pour. Thermal shutdown activates at ~150°C junction. For sustained 300mA at VIN > 24V, forced airflow or heatsinking on the EP pad is recommended to maintain <125°C T_J.

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

Yes - all listed BOM components, including the MPQ2019GN IC, Murata capacitors (GRM31CR71H225KA88L, GRM188R71H473KA61D, GRM32ER71C226KEA8L), and Yageo resistors, are RoHS-compliant and lead-free per MPS's green status documentation and manufacturer declarations.

Can the EV2019-N-00A be used to evaluate both MP2019 and MPQ2019 devices?

Yes - the board is explicitly qualified for both MP2019 (commercial grade) and MPQ2019GN (AEC-Q100 qualified automotive grade). The MPQ2019GN is pre-installed; swapping in an MP2019 (same SOIC8-EP footprint and pinout) is mechanically and electrically compatible, though qualification scope differs.