Monolithic Power Systems Inc. MPQ2019GN-5-AEC1-P

Overview

MPQ2019GN-5-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified 40V input, 300mA adjustable/fixed-output linear regulator with 10µA quiescent current, 5V fixed output, and integrated power-good monitoring. It operates across -40°C to +125°C ambient, delivers ±2% output accuracy over temperature, and supports automotive body control modules requiring stable low-power biasing under wide battery voltage transients (e.g., cold-crank to load-dump).

For engineers reviewing the MPQ2019GN-5-AEC1-P datasheet, MPQ2019GN-5-AEC1-P pinout, MPQ2019GN-5-AEC1-P application, or MPQ2019GN-5-AEC1-P equivalent, key selection criteria include its 40V max input rating, programmable PG delay via external capacitor, thermal shutdown at 165°C with 30°C hysteresis, SOIC-8 EP package with exposed pad for thermal management, and compliance with automotive reliability standards.

Technical Context

The MPQ2019GN-5-AEC1-P uses a PMOS pass transistor architecture enabling ultra-low dropout (480mV @ 300mA, VOUT=5V) and operation down to 3V input-critical for start-stop vehicle systems. Its internal 1.25V reference feeds a precision error amplifier that regulates FB to maintain output stability despite line/load variations.

Power-good functionality is implemented via an open-drain PG pin with 92% rising threshold (relative to VFB), 5% hysteresis, and user-programmable assertion delay (5–15ms via PGDL capacitor). EN logic control (VIH=1.8V, VIL=0.3V) enables system-level sequencing, while thermal shutdown and current limiting protect against sustained overload or PCB thermal runaway.

Key Specifications

Pinout & Package

MPQ2019GN-5-AEC1-P is housed in a SOIC-8 EP (exposed pad) package. The exposed thermal pad must be soldered to a dedicated ground plane for effective heat dissipation and to meet AEC-Q100 thermal reliability requirements.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive-grade linear regulator applications.

Compared with TPS7B8150QDDARQ1 and NCV8664CDT50RKG, MPQ2019GN-5-AEC1-P uniquely combines AEC-Q100 Grade 1 qualification, 10µA IQ, programmable PG delay, and 300mA output in SOIC-8 EP-making it optimal for space-constrained, battery-sensitive automotive modules requiring precise power sequencing.

Availability

MPQ2019GN-5-AEC1-P is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, and portable medical diagnostics requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.

Supply support for MPQ2019GN-5-AEC1-P 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 design centers in the US, China, and Taiwan.

The MPQ2019 product line targets automotive and industrial applications requiring high-input-voltage linear regulation with ultra-low quiescent current, robust fault protection, and AEC-Q100 compliance.

FAQ

What is the maximum allowable input voltage for MPQ2019GN-5-AEC1-P?

The absolute maximum input voltage is +42V, but the recommended operating range is 3V to 40V. Exceeding 40V risks triggering internal protection circuits or degrading long-term reliability-even briefly during load-dump events-so transient clamping should be considered for 42V-tolerant designs.

Can the FB pin be left unconnected in the MPQ2019GN-5-AEC1-P fixed-output version?

Yes. In the fixed 5V version (MPQ2019GN-5-AEC1-P), the FB pin is internally connected to the output divider and must be left floating-not grounded or tied to any external node-as specified in the datasheet to avoid regulation errors or instability.

How is the power-good delay time calculated for MPQ2019GN-5-AEC1-P?

Delay time t_PGDL (ms) = C_PGDL (nF) × V_{th_PGDL} (1.7V) ÷ I_PGDL (µA), where I_PGDL is 3–9µA (typical 5.5µA). For example, a 47nF capacitor yields ~10ms delay using the typical charging current.

Does MPQ2019GN-5-AEC1-P require an input capacitor, and what type is recommended?

Yes-a 1µF to 10µF X5R or X7R ceramic capacitor must be placed between IN and GND, as close as possible to the pin. This suppresses high-frequency noise and improves line transient response; larger values within this range enhance performance during fast battery voltage changes.

What thermal considerations apply to the SOIC-8 EP package of MPQ2019GN-5-AEC1-P?

The exposed pad must be soldered to a minimum 100mm² copper area connected to GND for thermal conduction. With θ_JA = 50°C/W on a 4-layer board, continuous 300mA operation at 40V input requires careful layout to keep junction temperature below 150°C-especially in sealed enclosures.

Is reverse voltage protection required when using MPQ2019GN-5-AEC1-P?

Yes-if the output can exceed the input (e.g., backup battery present), an external Schottky diode must be added from IN to GND. The internal PMOS body diode conducts reverse current uncontrolled, risking device failure during backfeed conditions.

What is the significance of the "-AEC1-P" suffix in MPQ2019GN-5-AEC1-P?

The "-AEC1" denotes AEC-Q100 Grade 1 qualification (−40°C to +125°C ambient), and "-P" indicates tape-and-reel packaging. This part meets full automotive reliability testing requirements-including HTOL, temperature cycling, and ESD-and ships in standard reel format for SMT assembly.