Monolithic Power Systems Inc. EV2019-5-N-00A

Overview

EV2019-5-N-00A from Monolithic Power Systems is a fully assembled and tested evaluation board for the MPQ2019GN-5 low-dropout linear regulator, designed to validate 5V/300mA power delivery from 6–40V input in automotive and industrial systems. It implements thermal shutdown, programmable power-good delay, ±3% output accuracy, and operates across –40°C to +125°C junction temperature.

For engineers reviewing the EV2019-5-N-00A datasheet, EV2019-5-N-00A pinout, EV2019-5-N-00A application, or EV2019-5-N-00A equivalent, this board enables rapid validation of MPQ2019GN-5 performance under real-world load transients, dropout conditions, and PG timing behavior in battery-powered microcontroller subsystems.

Technical Context

The EV2019-5-N-00A implements the MPQ2019GN-5 SOIC-8 EP regulator with fixed 5V output, 480mV dropout at 300mA, and 12µA quiescent current. Its PGDL pin supports externally programmable power-good assertion delay (e.g., 0.31ms with 1nF, 14.53ms with 47nF) via a precision 5.5µA charging current and 1.7V threshold.

Board-level design includes input filtering (1µF/50V X7R 1206), bulk output capacitance (22µF/16V X7R 1210), feedback network (1MΩ/100kΩ resistors), and PG timing capacitor (47nF). All components are surface-mount, RoHS-compliant, and optimized for thermal dissipation in high-ambient environments.

Key Specifications

Availability

EV2019-5-N-00A is available at Aetrix Electronics and suitable for automotive power validation, industrial sensor node prototyping, and battery-powered microcontroller subsystem development requiring stable component supply and fast time-to-test capability.

Supply support for EV2019-5-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 conversion, linear regulation, motor drivers, and LED lighting controllers.

The MPQ2019GN-5 product line delivers ultra-low-quiescent-current LDOs for automotive and industrial applications where wide-input-voltage operation, thermal robustness, and precise power-good signaling are critical.

FAQ

What input voltage range is supported by the EV2019-5-N-00A?

The board accepts 6V to 40V DC input, matching the MPQ2019GN-5's rated operating range. Input must be well-regulated; for VIN ≥24V or cable lengths >0.5m, a damping capacitor is recommended at the input terminals per the quick-start guide.

How is the power-good (PG) signal timed on this evaluation board?

PG asserts high when VOUT exceeds 93% of nominal (≥4.65V) and remains high until VOUT drops below 88% (≤4.4V). The assertion delay is programmable via an external capacitor on the PGDL pin, using a 5.5µA internal current source and 1.7V threshold to achieve delays from 0.31ms to 14.53ms.

Does the EV2019-5-N-00A include thermal protection verification?

Yes - the MPQ2019GN-5 IC on the board integrates thermal shutdown that activates at +160°C junction temperature. The evaluation board layout uses the SOIC-8 EP package's exposed pad for enhanced thermal conduction, enabling reliable testing under sustained 300mA loads at elevated ambient temperatures.

Can the output voltage be adjusted on this board?

No - the EV2019-5-N-00A is configured for fixed 5V output using the MPQ2019GN-5 variant. The FB pin is internally tied to generate 5V; no external resistor divider is present, and the board lacks provisions for output voltage reconfiguration.

What is the purpose of the NS (Not Stuffed) components listed in the BOM?

NS components (R2, R3, R4, C1/C2/C6 placeholders) provide flexibility for noise filtering, input transient suppression, or custom PGDL tuning. They are omitted in the default configuration but allow users to add discrete parts for EMI mitigation, input decoupling enhancement, or alternate delay timing without PCB redesign.

Is the EV2019-5-N-00A compliant with automotive qualification standards?

Yes - the board evaluates the MPQ2019GN-5-AEC1 variant, which is AEC-Q100 Grade 1 qualified (–40°C to +125°C). The board itself is not certified, but its design and component selection align with automotive-grade reliability requirements including thermal derating and long-term stability testing.