Monolithic Power Systems Inc. MCQ1823GQTE-330BRNAEC-P

Overview

MCQ1823GQTE-330BRNAEC-P from Monolithic Power Systems is an automotive-grade, bidirectional linear Hall-effect current sensor IC with integrated over-current detection (OCD), designed for high-accuracy AC/DC current sensing in space-constrained motor control and power systems. It features ±30A rated current range, 44 mV/A sensitivity, 0.6 mΩ internal conductor resistance, 120 kHz bandwidth, and AEC-Q100 Grade 1 qualification for under-hood automotive use.

For engineers reviewing the MCQ1823GQTE-330BRNAEC-P datasheet, MCQ1823GQTE-330BRNAEC-P pinout, MCQ1823GQTE-330BRNAEC-P application, or MCQ1823GQTE-330BRNAEC-P equivalent, this page delivers verified technical context, validated pin functions, real-world application mappings, and confirmed alternative options - all grounded in the official MPS Rev. 1.0 datasheet and package documentation.

Technical Context

The MCQ1823GQTE-330BRNAEC-P implements a differential Hall array to reject homogeneous and gradient stray magnetic fields, enabling stable operation in electrically noisy environments like motor drives and battery management systems. Its spinning current technique minimizes offset drift, while the integrated OCD circuit provides programmable threshold (±IPMAX) with 1 µs response time and open-drain /OCD output.

It operates from a 3.3 V supply (3.0–3.6 V), draws 9–12 mA quiescent current, and delivers ratiometric analog output voltage proportional to primary current. The device uses internal fusing on IP+ and IP− terminals and supports basic isolation per IEC62368-1 (VIOWM = 100 VPK/DC).

Key Specifications

Pinout & Package

MCQ1823GQTE-330BRNAEC-P is housed in a TQFN-12 (3 mm × 3 mm, 0.75 mm height) package with wettable flanks, MSL Level 1, and AEC-Q100 qualified construction for automotive reflow compatibility.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar linear Hall-effect current sensing applications.

Compared with ACS724LLCTR-30AB-T and TLE4971-30S4H, the MCQ1823GQTE-330BRNAEC-P delivers superior dynamic response, lower thermal impact, and integrated fault signaling - making it optimal for next-generation automotive and industrial power systems demanding compact size and deterministic protection.

Availability

MCQ1823GQTE-330BRNAEC-P is available at Aetrix Electronics and suitable for motor control, automotive battery management, and industrial over-current protection requiring stable component supply, AEC-Q100 compliance, and ultra-small footprint integration.

Supply support for MCQ1823GQTE-330BRNAEC-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 power management ICs, with design focus on efficiency, integration, and automotive reliability.

The MCQ1823 product line targets high-accuracy, isolated current sensing in space- and thermally-constrained automotive and industrial power systems - emphasizing differential Hall architecture, fast fault response, and AEC-Q100 qualification from inception.

FAQ

What is the maximum continuous current the MCQ1823GQTE-330BRNAEC-P can measure?

The device is rated for ±30 A continuous bidirectional current, with total output error maintained at ±2.5% across −40°C to +125°C. Its 0.6 mΩ internal conductor resistance results in only 540 mW power dissipation at ±30 A, enabling reliable operation without forced cooling in typical automotive PCB layouts.

Does the /OCD pin require an external pull-up resistor?

Yes - the /OCD pin is open-drain and requires an external pull-up resistor (10 kΩ to 500 kΩ) connected to VCC. This resistor sets the OCD threshold between 50% and 240% of IPMAX; for MCQ1823GQTE-330BRNAEC-P, the default threshold is ±30 A (100% IPMAX) when RPULLUP = 10 kΩ.

Is the output voltage ratiometric or absolute by default?

The MCQ1823GQTE-330BRNAEC-P uses ratiometric output mode: VOUT is proportional to VCC, with zero-current output at VCC/2 (1.65 V at 3.3 V supply). This eliminates sensitivity to supply rail variation and simplifies ADC reference matching in microcontroller-based systems.

Can this sensor replace shunt-based current measurement in high-side configurations?

Yes - its galvanic isolation (VIOWM = 100 VPK/DC), differential Hall architecture, and fused IP+/IP− terminals enable direct high-side current sensing without level-shifting circuitry or isolation amplifiers, reducing component count and board area versus precision shunt solutions.

What is the recommended PCB layout practice for minimizing magnetic interference?

Place the MCQ1823GQTE-330BRNAEC-P away from current-carrying traces not routed through its IP+/IP− terminals; maintain ≥5 mm clearance from adjacent inductors or transformers. Use solid ground plane beneath the package and route IP+ and IP− traces symmetrically and tightly coupled to preserve magnetic field uniformity.

How does the spinning current technique improve offset stability?

The spinning current technique periodically rotates the Hall plate bias direction, canceling first-order offset voltage drift caused by process mismatches and thermal gradients. This achieves ±10 mV offset over temperature - critical for maintaining accuracy in unidirectional or low-current measurement applications.

Is the TQFN-12 package compatible with standard automotive reflow profiles?

Yes - the TQFN-12 (3 mm × 3 mm) package has MSL Level 1 rating and is qualified for peak reflow temperatures up to 260°C. Its wettable flanks support automated optical inspection (AOI) of solder joints, meeting IPC-A-610 Class 2 requirements for automotive production.