Monolithic Power Systems Inc. MPQ20056GJ-33-P

Overview

MPQ20056GJ-33-P from Monolithic Power Systems is a fixed 3.3V, AEC-Q100 qualified low-noise linear regulator delivering up to 250mA output current with 100mV dropout at full load, 150μA ground current, and 63dB PSRR at 1kHz. It operates from 2.5V–5.5V input and targets power rails in automotive infotainment and ADAS sensor modules where low EMI and thermal robustness are critical.

For engineers reviewing the MPQ20056GJ-33-P datasheet, MPQ20056GJ-33-P pinout, MPQ20056GJ-33-P application, or MPQ20056GJ-33-P equivalent, key selection criteria include its TSOT23-5 package footprint, guaranteed -40°C to +125°C operation, 13μV_RMS noise (10Hz–100kHz), thermal shutdown at 150°C, and compatibility with standard 4.7μF ceramic output capacitors.

Technical Context

The MPQ20056GJ-33-P integrates a PMOS pass transistor enabling ultra-low dropout and minimal ground current across temperature. Its feedback loop uses a precision 0.8V reference and internal resistor divider for fixed 3.3V output, eliminating external components while maintaining ±2% accuracy at 25°C.

It features integrated UVLO with 1.95V turn-on threshold and 160mV hysteresis, logic-level enable control (EN high ≥1.5V), short-circuit current limiting (350–850mA), and thermal foldback that disables the pass element above 150°C with 20°C hysteresis.

Key Specifications

Pinout & Package

MPQ20056GJ-33-P is housed in a RoHS-compliant TSOT23-5 package (2.9mm × 1.6mm × 1.1mm) with exposed pad omitted-thermal performance relies on PCB copper area under pins 1 (IN), 3 (GND), 4 (FB), and 5 (OUT). Pin 2 is EN.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPQ20056GJ-33-P, the TPS7B8133QDCYRQ1 trades 3dB PSRR and higher noise for +50mA headroom, while the NCP114AMX33T2G reduces cost and quiescent current but sacrifices automotive qualification, noise performance, and current capability-making MPQ20056GJ-33-P optimal for noise-sensitive AEC-Q100 systems.

Availability

MPQ20056GJ-33-P is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply, long-lifecycle support, and AEC-Q100 compliance.

Supply support for MPQ20056GJ-33-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 MPQ20056 series belongs to MPS's automotive-grade LDO portfolio, engineered specifically for noise-sensitive, thermally demanding vehicle subsystems requiring AEC-Q100 qualification and minimal bill-of-materials overhead.

FAQ

Is MPQ20056GJ-33-P pin-compatible with other variants in the MPQ20056 family?

Yes-MPQ20056GJ-33-P shares identical TSOT23-5 pinout and footprint with MPQ20056GJ-25, MPQ20056GJ-29, and MPQ20056GJ (adjustable), enabling drop-in replacement across 1.8V–3.3V fixed outputs and adjustable configurations without PCB redesign.

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

The minimum input voltage is 3.4V under worst-case conditions: 3.3V nominal output + 100mV dropout (guaranteed at 250mA/25°C), with derating to 3.5V recommended for full -40°C to +125°C operation and load transients per datasheet Section 4.

Can MPQ20056GJ-33-P be used without an output capacitor?

No-MPQ20056GJ-33-P requires a minimum 4.7μF ceramic output capacitor connected between OUT and GND for stability, transient response, and noise suppression; omitting it risks oscillation, poor load regulation, and failure to meet PSRR/noise specifications.

Does MPQ20056GJ-33-P include reverse-voltage protection?

No-the internal PMOS pass element contains a body diode that conducts from OUT to IN if V_OUT > V_IN, risking damage from uncontrolled reverse current. An external Schottky diode in series with the input is required in backup-battery or hot-swap scenarios per datasheet Section 12.

How does the EN pin behave during power-up sequences?

The EN pin has no internal pull-up or pull-down; it must be actively driven to ≥1.5V for enable or ≤0.4V for disable. If left floating, the regulator may power up unpredictably or fail to start-tie to VIN via a 100kΩ resistor if always-on operation is required.

What is the thermal resistance (θ_JA) of MPQ20056GJ-33-P in standard PCB layout?

For the TSOT23-5 package, θ_JA is 220°C/W on a standard 4-layer JEDEC test board (JESD51-7); actual performance improves significantly with ≥100mm² copper pour connected to pin 3 (GND) and optimized thermal vias beneath the package body.

Is MPQ20056GJ-33-P compliant with lead-free and halogen-free standards?

Yes-MPQ20056GJ-33-P is fully lead-free, halogen-free, and RoHS-compliant per MPS Quality Assurance documentation; all plating and mold compounds meet IPC/JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements.