Monolithic Power Systems Inc. MPQ2019GN-AEC1-Z

Overview

MPQ2019GN-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified 40V input, 300mA adjustable-output linear regulator with 10µA quiescent current, ±2% output voltage accuracy over temperature, and integrated power-good monitoring with programmable delay. It operates across -40°C to +150°C junction temperature and delivers stable regulation for automotive body control modules and ultra-low-power microcontrollers powered from 12V/24V battery rails.

For engineers reviewing the MPQ2019GN-AEC1-Z datasheet, MPQ2019GN-AEC1-Z pinout, MPQ2019GN-AEC1-Z application, or MPQ2019GN-AEC1-Z equivalent, key selection criteria include its 3V–40V input range, SOIC-8 EP thermal performance (θJA = 50°C/W), programmable PG delay via external capacitor, and AEC-Q100 qualification for automotive under-hood use.

Technical Context

The MPQ2019GN-AEC1-Z implements a PMOS pass transistor architecture enabling low dropout (420mV @ 300mA, VOUT=5V) and reverse-voltage protection awareness. Its feedback loop regulates FB to 1.25V with 50nA input bias, supporting precise resistor-divider-based output adjustment from 1.25V to 15V.

Power-good functionality uses an open-drain PG pin with 5% hysteresis and a dedicated PGDL pin that sources 3–9µA to charge an external capacitor-enabling user-defined assertion delay (5–15ms typical with 47nF). Thermal shutdown activates at 165°C with 30°C hysteresis, and internal current limiting caps peak output at 1000mA.

Key Specifications

Pinout & Package

MPQ2019GN-AEC1-Z is housed in a thermally enhanced SOIC-8 EP package with exposed pad soldered to PCB ground plane for θJC = 10°C/W thermal resistance. The exposed pad must be connected to GND for safe 2.5W power dissipation at +25°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV73333PQDBVRQ1 and NCP160AMX330TBG, MPQ2019GN-AEC1-Z uniquely combines 40V input capability, AEC-Q100 Grade 1 qualification, programmable PG delay, and SOIC-8 EP thermal performance - making it the only viable choice for under-hood 24V systems requiring robust power sequencing and thermal resilience.

Availability

MPQ2019GN-AEC1-Z is available at Aetrix Electronics and suitable for automotive body control modules, telematics units, and ADAS camera power management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MPQ2019GN-AEC1-Z 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, and global manufacturing partnerships.

The MPQ2019 belongs to MPS's automotive-qualified linear regulator product line, engineered specifically for harsh-environment vehicle subsystems requiring AEC-Q100 compliance, wide-input operation, and intelligent power-good signaling.

FAQ

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

The absolute maximum input voltage is +42V, but the recommended operating range is 3V to 40V. Exceeding 42V risks permanent damage to the internal PMOS pass device and ESD protection structures. For automotive applications subject to ISO 7637-2 Pulse 5a (75V/100ms), external clamping is required.

Can MPQ2019GN-AEC1-Z be used in adjustable-output mode with AEC-Q100 compliance?

Yes - the AEC-Q100 qualification applies to the entire MPQ2019GN-AEC1-Z device, including adjustable-output configurations. Output voltage is set via external resistor divider on FB, and all electrical parameters (accuracy, thermal shutdown, PG behavior) remain validated across the full 1.25V–15V range.

How does the PGDL pin function, and what capacitor value achieves a 10ms delay?

PGDL sources 3–9µA (typical 5.5µA) to charge an external capacitor; delay t_PGDL (ms) ≈ C_PGDL (nF) × 1.7V / I_PGDL (µA). For 10ms with 5.5µA, C_PGDL = (10 × 5.5) / 1.7 ≈ 32nF - a standard 33nF capacitor yields ~10.2ms delay.

Is the exposed pad on the SOIC-8 EP package required to be soldered to ground?

Yes - the exposed pad is electrically connected to GND and serves as the primary thermal path. It must be soldered to a minimum 100mm² copper pour tied to the system ground plane. Omitting this connection degrades θJA from 50°C/W to >80°C/W and risks thermal shutdown at <200mA load.

Does MPQ2019GN-AEC1-Z support reverse-voltage protection?

No - the internal PMOS pass transistor has a body diode that conducts from OUT to IN if V_OUT > V_IN. In backup-battery or dual-supply scenarios, an external Schottky diode (e.g., 1N5819) must be placed in series with IN to prevent destructive reverse current.

What is the minimum output capacitor required for stability?

A single 0.47µF X5R/X7R ceramic capacitor is sufficient for stability across all operating conditions. Larger values (up to 22µF) improve load-transient response and reduce output ripple, but are not required for basic regulation.

How does thermal shutdown behave during sustained overload?

At 165°C junction temperature, the IC shuts down completely - disabling the pass transistor, reference, and bias circuits. After cooling by ≥30°C (to ≤135°C), it automatically restarts. This hiccup-mode protection prevents permanent damage during intermittent overloads like motor stall events.