Monolithic Power Systems Inc. MPQ20056GJ-AEC1-P

Overview

MPQ20056GJ-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 1.8V output voltage in a TSOT23-5 package-designed for automotive infotainment power rails requiring stable low-voltage bias under transient load conditions.

For engineers reviewing the MPQ20056GJ-AEC1-P datasheet, MPQ20056GJ-AEC1-P pinout, MPQ20056GJ-AEC1-P application, or MPQ20056GJ-AEC1-P equivalent, key selection criteria include its AEC-Q100 qualification, 63dB PSRR at 1kHz, 13μVRMS output noise (10Hz–100kHz), thermal shutdown at 150°C, and compatibility with 4.7μF ceramic output capacitors without external compensation.

Technical Context

The MPQ20056GJ-AEC1-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 with ±2% output accuracy over –40°C to +125°C junction range, supporting both fixed-output and adjustable configurations via external resistor divider.

Internal protection includes foldback current limiting (350–850mA short-circuit limit), thermal shutdown with 20°C hysteresis, and UVLO with 1.95V turn-on threshold and 160mV hysteresis-ensuring robust operation in automotive cold-crank and load-dump scenarios where input voltage dips to 2.5V or surges to 5.5V.

Key Specifications

Pinout & Package

MPQ20056GJ-AEC1-P is housed in a RoHS-compliant, halogen-free TSOT23-5 package (2.9mm × 1.6mm × 1.1mm) with exposed pad not present-optimized for space-constrained automotive PCB layouts and reflow-compatible with standard SMT processes.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS7A0518PDBVR and NCP114AMX180TBG, MPQ20056GJ-AEC1-P uniquely delivers Grade 1 AEC-Q100 compliance, lowest noise (13μVRMS), and tightest dropout (100mV) in a TSOT23-5 footprint-making it the only option qualified for demanding under-hood and vision-system deployments.

Availability

MPQ20056GJ-AEC1-P is available at Aetrix Electronics and suitable for automotive infotainment displays, ADAS camera modules, and body control unit I/O power rails requiring stable component supply with full AEC-Q100 traceability and long-term lifecycle support.

Supply support for MPQ20056GJ-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 in the US, China, and Taiwan, and global manufacturing partnerships.

The MPQ20056 series belongs to MPS's automotive-grade LDO portfolio, engineered specifically for noise-sensitive, thermally constrained automotive subsystems-including infotainment, ADAS, and telematics-where AEC-Q100 compliance and ultra-low noise are non-negotiable.

FAQ

Is MPQ20056GJ-AEC1-P pin-compatible with other MPQ20056 variants?

Yes-MPQ20056GJ-AEC1-P shares identical TSOT23-5 pinout with all MPQ20056GJ-x-AEC1 variants (e.g., -25, -29, -33). The only differences are internal resistor divider values setting output voltage; no PCB redesign is needed when changing fixed-output versions.

What is the maximum allowable input voltage for MPQ20056GJ-AEC1-P?

The absolute maximum input voltage is +6V relative to GND. However, the recommended operating range is 2.5V to 5.5V. Exceeding 5.5V risks permanent damage even briefly, as the device lacks overvoltage clamping beyond its absolute ratings.

Does MPQ20056GJ-AEC1-P require an external capacitor on the FB pin?

No-FB is an input-only node for feedback sensing and does not require external capacitance. For the fixed 1.8V version, FB is internally connected to the output divider; external components are unnecessary unless converting to adjustable mode (which this variant does not support).

Can MPQ20056GJ-AEC1-P be used without the EN pin connection?

No-EN must be actively driven. Leaving it floating may cause erratic startup or oscillation. For always-on operation, tie EN directly to IN (VIN). Do not connect EN to GND or leave unconnected, as this disables regulation permanently.

What thermal derating applies to MPQ20056GJ-AEC1-P in TSOT23-5 package?

With θJA = 220°C/W on a standard 4-layer PCB, power dissipation must be limited to ≤0.57W at TA = 25°C. At 85°C ambient, max continuous power drops to ~0.26W-requiring careful thermal layout or reduced load current to avoid thermal shutdown.

Is reverse voltage protection built-in?

No-the internal PMOS body diode conducts from OUT to IN if VOUT > VIN, risking damage from uncontrolled reverse current. An external Schottky diode (cathode to IN, anode to OUT) is mandatory in backup-battery or hot-swap scenarios per MPS Application Note AN-103.

How does load transient response behave at 250mA step change?

With 4.7μF ceramic output capacitor, typical undershoot is <80mV and recovery time is <10μs. Performance improves with lower-ESR capacitors or adding 100nF in parallel-critical for powering burst-mode wireless transceivers without brownout.