Monolithic Power Systems Inc. MPQ20056GJ-P

Overview

MPQ20056GJ-P from Monolithic Power Systems is an AEC-Q100 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 in a TSOT23-5 package. It operates from 2.5V–5.5V input and targets power-sensitive automotive and industrial subsystems requiring stable low-voltage biasing.

For engineers reviewing the MPQ20056GJ-P datasheet, MPQ20056GJ-P pinout, MPQ20056GJ-P application, or MPQ20056GJ-P equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification, 63dB PSRR at 1kHz, 13μVRMS noise (10Hz–100kHz), thermal shutdown at 150°C, and compatibility with ceramic output capacitors as small as 4.7μF.

Technical Context

The MPQ20056GJ-P uses an internal PMOS pass transistor enabling ultra-low dropout and minimal ground current across temperature. Its feedback loop is optimized for stability with 4.7μF ceramic output capacitance and includes precision 0.8V reference voltage with ±2% output accuracy over -40°C to +125°C.

It integrates enable-controlled shutdown (EN threshold: 1.5V high / 0.4V low), current limiting (350–850mA short-circuit limit), and thermal protection with 20°C hysteresis. UVLO activates below 1.95V input with 160mV hysteresis to prevent erratic startup during brownout conditions.

Key Specifications

Pinout & Package

MPQ20056GJ-P is housed in a RoHS-compliant, halogen-free TSOT23-5 package (1.0mm height, 2.9mm × 1.6mm footprint) with exposed pad not present - thermal performance relies on standard PCB copper area under pins.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise LDO applications.

Compared with TPS7A0533PDBVR and NCP114AMX33T2G, MPQ20056GJ-P uniquely combines AEC-Q100 Grade 1 qualification, 63dB PSRR, and 13μVRMS noise in a TSOT23-5 package-making it optimal for safety-critical, noise-sensitive automotive and industrial edge nodes where reliability and signal integrity are non-negotiable.

Availability

MPQ20056GJ-P is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, portable medical diagnostics, and wireless baseband subsystems requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for MPQ20056GJ-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 series belongs to MPS's automotive-grade LDO portfolio, engineered specifically for noise-sensitive, thermally constrained subsystems in ADAS, infotainment, and vehicle networking applications where AEC-Q100 compliance and PSRR performance are mandatory.

FAQ

What is the maximum allowable input voltage for MPQ20056GJ-P?

The absolute maximum input voltage is +6V relative to GND, but the recommended operating range is 2.5V to 5.5V. Exceeding 5.5V risks permanent damage even briefly, and operation above 6V violates absolute maximum ratings per datasheet Rev. 1.3 Section "Absolute Maximum Ratings".

Does MPQ20056GJ-P require an external feedback resistor network?

No - MPQ20056GJ-P is a fixed 3.3V output variant; the FB pin is internally connected to the output divider and must be left unconnected or tied to OUT per datasheet guidance. External resistors are only required for adjustable versions like MPQ20056GJ.

Can MPQ20056GJ-P safely drive a 4.7μF ceramic capacitor?

Yes - the device is explicitly characterized and guaranteed stable with 4.7μF X5R/X7R ceramic capacitors, as confirmed in the "Output Capacitor Selection" section and Typical Application Circuits (Figures 6–10) of the datasheet Rev. 1.3.

What is the thermal resistance (θJA) of the TSOT23-5 package?

The junction-to-ambient thermal resistance is 220°C/W under JEDEC JESD51-7 4-layer PCB conditions, as specified in the "Thermal Resistance" table on page 3 of datasheet Rev. 1.3 - this value assumes standard 1-inch² copper pour under the package.

Is MPQ20056GJ-P pin-compatible with other MPQ20056 variants?

No - MPQ20056GJ-P (TSOT23-5) and MPQ20056GG-x (QFN8) have different pin counts, layouts, and thermal pad configurations. The TSOT23-5 has 5 pins with dedicated IN, GND, EN, FB, and OUT; QFN8 duplicates IN and OUT pins and adds NC and exposed pad connections.

What happens during reverse voltage conditions (VOUT > VIN)?

Because the internal PMOS pass element contains a body diode, reverse current can flow from OUT to IN when VOUT exceeds VIN - potentially damaging the IC. Datasheet Rev. 1.3 Section "External Reverse Voltage Protection" recommends adding an external Schottky diode at the input to block this path.

How does the EN pin behave when left floating?

The EN pin has no internal pull-up or pull-down; leaving it floating causes undefined operation and potential malfunction. Datasheet Rev. 1.3 Section "PIN FUNCTIONS" explicitly states "Do not float the EN pin" and recommends tying to VIN if shutdown is unused.