Monolithic Power Systems Inc. MPQ20056GG-33-AEC1-P

Overview

MPQ20056GG-33-AEC1-P from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified low-noise, high-PSRR linear regulator delivering up to 250mA output current with 100mV dropout at full load, 150μA ground current, and fixed 3.3V output. It operates from 2.5V–5.5V input and targets power rails for automotive infotainment processors, ADAS sensor interfaces, and telematics modules requiring stable low-noise bias.

For engineers reviewing the MPQ20056GG-33-AEC1-P datasheet, MPQ20056GG-33-AEC1-P pinout, MPQ20056GG-33-AEC1-P application, or MPQ20056GG-33-AEC1-P equivalent, this device supports critical low-voltage analog/RF subsystems where PSRR >63dB at 1kHz, thermal shutdown at 150°C, and automotive-grade reliability are mandatory selection criteria.

Technical Context

The MPQ20056GG-33-AEC1-P integrates a PMOS pass transistor enabling ultra-low dropout (100mV @ 250mA) and minimal ground current (150μA @ light load). Its feedback loop uses a precision 0.8V reference with ±2% output accuracy over -40°C to +125°C junction temperature.

It features integrated UVLO (2.3V rising threshold with 160mV hysteresis), logic-controlled enable (EN pin thresholds: 1.5V high / 0.4V low), short-circuit current limiting (350–850mA), and thermal shutdown with 20°C hysteresis - all designed for unattended operation in automotive under-hood environments.

Key Specifications

Pinout & Package

MPQ20056GG-33-AEC1-P is housed in a thermally enhanced 2mm × 2mm QFN-8 package with exposed thermal pad. The pad must be soldered to a dedicated GND plane for θJA = 80°C/W and reliable 1.6W power dissipation at TA = 25°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Compared with TPS7B8133QDGNRQ1 and NCP114AMX33TBG, MPQ20056GG-33-AEC1-P delivers superior low-noise performance (35μVRMS), tighter dropout (100mV), and higher PSRR (63dB), making it optimal for automotive RF and high-speed serial interface power domains where voltage headroom and spectral purity are constrained.

Availability

MPQ20056GG-33-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS sensor modules, and telematics control units requiring stable component supply with AEC-Q100 compliance, long-term lifecycle support, and traceable sourcing.

Supply support for MPQ20056GG-33-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 across Asia and North America and global manufacturing partnerships.

The MPQ20056 product line delivers automotive-qualified LDOs optimized for low-noise, high-PSRR power delivery in safety-critical and RF-sensitive vehicle subsystems - targeting infotainment, ADAS, and connectivity applications.

FAQ

What is the maximum allowable input voltage for MPQ20056GG-33-AEC1-P?

The absolute maximum input voltage is +6V referenced to GND. However, the recommended operating range is 2.5V to 5.5V. Operation above 5.5V risks exceeding safe power dissipation limits and may trigger thermal shutdown even at moderate load currents due to increased (VIN − VOUT) × IOUT losses.

Can MPQ20056GG-33-AEC1-P be used with ceramic output capacitors only?

Yes - the device is explicitly designed for stability with standard 4.7μF X5R/X7R ceramic capacitors and does not require ESR-based damping. Larger ceramics (e.g., 10μF) improve load transient response but do not affect stability. Tantalum or aluminum electrolytics are unnecessary and discouraged.

Is the EN pin internally pulled down?

No - the EN pin has no internal pull-down. It must be actively driven to ≥1.5V for enable or ≤0.4V for disable. Leaving it floating violates the Absolute Maximum Ratings and may cause erratic startup behavior or unintended shutdown due to noise coupling.

Does MPQ20056GG-33-AEC1-P support reverse voltage protection?

No - the internal PMOS pass element includes a body diode that conducts from OUT to IN if VOUT > VIN. In backup-battery or hot-swap scenarios, this can cause destructive reverse current. An external Schottky diode in series with the input is required for reverse polarity protection.

How does thermal performance differ between QFN-8 and TSOT23-5 packages?

The QFN-8 (2×2mm) achieves θJA = 80°C/W on a 4-layer PCB with exposed pad soldered to GND, enabling 1.6W dissipation. The TSOT23-5 has θJA = 220°C/W, limiting usable power to ~0.57W - making QFN-8 essential for high-current or high-ambient-temperature automotive deployments.

What is the purpose of the NC pin (Pin 7) in the QFN-8 package?

Pin 7 is a true no-connect terminal with no internal bond wire or silicon connection. It must remain unconnected - routing traces to it, applying solder paste, or grounding it violates the validated package design and may compromise thermal or electrical performance per AEC-Q100 validation.

Is FB pin accessible or configurable for this variant?

No - MPQ20056GG-33-AEC1-P is a fixed-output variant with internal resistor divider set to 3.3V. The FB pin is not connected to the internal divider and must be left open (unconnected) per datasheet layout guidance; connecting external components to FB may disrupt regulation or cause instability.