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

Overview

MPQ20056GG-33-AEC1-Z from Monolithic Power Systems is an AEC-Q100 Grade 1 qualified low-noise, high-PSRR linear regulator delivering up to 250mA at a fixed 3.3V output with 100mV dropout at full load, 150μA ground current, and 63dB PSRR at 1kHz - deployed in automotive infotainment power rails and ADAS sensor sub-systems.

For engineers reviewing the MPQ20056GG-33-AEC1-Z datasheet, MPQ20056GG-33-AEC1-Z pinout, MPQ20056GG-33-AEC1-Z application, or MPQ20056GG-33-AEC1-Z equivalent, key selection criteria include its AEC-Q100 qualification, QFN8 (2×2mm) thermal performance (θJA = 80°C/W), 13μVRMS noise (10Hz–100kHz), and compatibility with ceramic output capacitors without external compensation.

Technical Context

The MPQ20056GG-33-AEC1-Z integrates a PMOS pass element enabling ultra-low dropout and minimal ground current across –40°C to +125°C ambient. Its internal 0.8V reference and feedback architecture support precise 3.3V regulation with ±2% accuracy at 25°C and ±3% over temperature.

It features integrated UVLO (1.95V rising threshold, 160mV hysteresis), thermal shutdown at 150°C with 20°C hysteresis, short-circuit protection (350–850mA limit), and logic-controlled enable (EN pin thresholds: 1.5V high, 0.4V low), all verified for automotive-grade reliability per AEC-Q100 Rev H.

Key Specifications

Pinout & Package

MPQ20056GG-33-AEC1-Z uses a thermally enhanced 2mm × 2mm QFN-8 package with exposed thermal pad. The pad must be soldered to a PCB ground plane to achieve θJA = 80°C/W and sustain full 250mA output under automotive ambient conditions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise, AEC-Q100 linear regulator applications.

Compared with TPS7B8233QPWPRQ1, MPQ20056GG-33-AEC1-Z delivers superior PSRR and lower noise in a smaller footprint but with lower current capacity; versus NCP1117ST33T3G, it provides full automotive qualification, integrated protection, and enable control essential for functional safety-compliant systems.

Availability

MPQ20056GG-33-AEC1-Z is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply with guaranteed AEC-Q100 compliance and long-term production continuity.

Supply support for MPQ20056GG-33-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 mixed-signal ICs for power management, motion control, and automotive applications.

The MPQ20056 product line targets automotive-grade power regulation with emphasis on low noise, high PSRR, and AEC-Q100 reliability - designed specifically for noise-sensitive subsystems in modern vehicles.

FAQ

Is MPQ20056GG-33-AEC1-Z pin-compatible with other MPQ20056 variants?

Yes - all MPQ20056 QFN8 variants (including -18, -25, -29, -33, and adjustable versions) share identical pinout and package dimensions. Only the internal feedback resistor network differs; no layout change is needed when switching fixed-output options.

What is the minimum input voltage required to maintain 3.3V output at 250mA?

The minimum input is 3.4V, calculated as VOUT + dropout = 3.3V + 0.1V. At –40°C to +125°C, worst-case dropout is 200mV, so VIN ≥ 3.5V is recommended for margin in automotive cold-crank or load-dump scenarios.

Does MPQ20056GG-33-AEC1-Z require an external feedback resistor divider?

No - the "-33" suffix denotes factory-trimmed fixed 3.3V output. The FB pin is internally connected; external resistors are unnecessary and must not be attached, as they would disrupt regulation.

Can the EN pin be left floating if shutdown functionality is unused?

No - the EN pin must never be left floating. If shutdown is not required, tie EN directly to IN (VIN) using a low-impedance connection to ensure reliable turn-on and avoid erratic behavior due to noise coupling.

What is the maximum allowable power dissipation at 85°C ambient temperature?

Using θJA = 80°C/W and TJ(MAX) = 150°C, PD(MAX) = (150 − 85) / 80 = 0.8125W. Derate linearly above 25°C ambient; at 85°C, continuous 250mA operation is viable only if VIN ≤ 4.3V (P = 250mA × (VIN − 3.3V) ≤ 0.8125W).

Is reverse-voltage protection integrated, or is an external diode required?

No internal reverse-voltage protection exists. When output voltage may exceed input (e.g., backup battery scenarios), an external Schottky diode from IN to OUT is mandatory to block reverse current through the PMOS body diode and prevent device damage.

How does the thermal pad connection affect performance in automotive PCBs?

Soldering the exposed pad to a ≥25mm² internal GND plane reduces θJA by ~25°C/W. Without proper pad connection, θJA degrades to >120°C/W, risking thermal shutdown at >150mA - making robust pad routing essential for AEC-Q100 compliance.