Monolithic Power Systems Inc. MCS1823GQTE-310BRN-P

Overview

MCS1823GQTE-310BRN-P from Monolithic Power Systems is a bidirectional linear Hall-effect current sensor IC with integrated over-current detection (OCD), designed for precision AC/DC current sensing in high-density power systems. It features ±10A rated current range, 132 mV/A sensitivity, 0.6 mΩ internal conductor resistance, ±2.5% total output error, and operates from a 3.3V supply in a TQFN-12 (3mm×3mm) package - deployed in motor control, SMPS fault protection, and automotive load monitoring.

For engineers reviewing the MCS1823GQTE-310BRN-P datasheet, MCS1823GQTE-310BRN-P pinout, MCS1823GQTE-310BRN-P application, or MCS1823GQTE-310BRN-P equivalent, key selection considerations include its differential Hall architecture for stray-field immunity, 1 µs OCD response time, ratiometric or absolute VOUT options, factory-trimmed offset, and isolation-rated operation up to 100 VPK per IEC62368-1.

Technical Context

The MCS1823GQTE-310BRN-P uses a dual-point differential Hall array to reject external magnetic gradients while measuring current-induced field differences across an integrated 0.6 mΩ primary conductor. Its spinning current technique minimizes offset drift, and dynamic offset cancellation ensures stable zero-current output voltage (VOUT(Q) = VCC/2 = 1.65 V) over temperature.

It integrates a dedicated open-drain /OCD output with user-configurable threshold (±100% of IPMAX = ±10 A) via external pull-up resistor (10–500 kΩ), delivering 1 µs response time and 3–12% hysteresis. The analog VOUT is bandwidth-limited to 120 kHz and supports both ratiometric and absolute output modes, with saturation limits of VCC − 0.3 V (high) and 0.3 V (low).

Key Specifications

Pinout & Package

TQFN-12 (3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad), RoHS-compliant, moisture sensitivity level (MSL) 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCTR-10AU-T, MCS1823GQTE-310BRN-P delivers tighter offset stability and integrated OCD in 40% smaller footprint; versus TLE4972-2C10B5HUMA1, it offers analog simplicity and 3.3 V compatibility at lower system-level complexity.

Availability

MCS1823GQTE-310BRN-P is available at Aetrix Electronics and suitable for motor control, switch-mode power supplies, and automotive load management requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for MCS1823GQTE-310BRN-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, including DC-DC converters, LED drivers, and precision analog sensors.

The MCS1823 product line targets compact, high-efficiency current sensing in space- and thermal-constrained applications such as motor drives, battery management, and industrial power conversion - emphasizing integration, accuracy, and magnetic immunity.

FAQ

What is the maximum continuous current the MCS1823GQTE-310BRN-P can measure without saturation?

The device maintains linear output up to ±10 A (IPMAX) with ±2.5% total error. Beyond this, VOUT remains proportional but nonlinearity increases beyond specification; saturation occurs at VOUT(H) = VCC − 0.3 V and VOUT(L) = 0.3 V under 4.7 kΩ load, corresponding to ~±12.5 A at 3.3 V supply.

How is the OCD threshold configured for MCS1823GQTE-310BRN-P?

The /OCD pin is open-drain and requires an external pull-up resistor (10–500 kΩ) to VCC. Threshold is set between 50% and 240% of IPMAX (±10 A) by selecting RPULLUP - e.g., 100 kΩ yields ~100% trip point. Hysteresis is fixed at 3–12% of the triggered threshold.

Does MCS1823GQTE-310BRN-P require external calibration for accuracy?

No. It is factory-trimmed for sensitivity and offset, achieving ±2.5% total output error over −40°C to +125°C without user calibration. Spinning current and dynamic offset cancellation ensure minimal thermal drift, eliminating need for on-board calibration routines.

Can MCS1823GQTE-310BRN-P be used with a 5 V supply?

No - the "3" in the part number (MCS1823GQTE-310BRN-P) denotes 3.3 V supply option. For 5 V operation, use MCS1823GQTE-510BRN (±10 A, 200 mV/A). Mixing supply voltages invalidates electrical specs and may damage the device.

What is the thermal pad connection requirement for the TQFN-12 package?

The exposed thermal pad must be soldered to a solid copper pour connected to GND for optimal thermal performance and EMI suppression. Minimum pad size matches package outline (3 mm × 3 mm); 4–9 thermal vias (0.3 mm diameter) to inner GND planes are recommended for junction-to-board thermal resistance <25°C/W.

Is the MCS1823GQTE-310BRN-P certified for automotive applications?

It is AEC-Q100 Grade 1 qualified (−40°C to +125°C TJ) and supports automotive subsystems like BCM and EPS, but lacks full ASIL certification. Its 100 VPK isolation complies with IEC62368-1 for basic insulation - system-level ASIL compliance requires additional architectural measures.

How does the differential Hall architecture improve noise immunity?

Two spatially separated Hall elements sense opposing magnetic field gradients induced by the same current path. Common-mode external fields (e.g., from adjacent inductors) generate equal signals at both points and cancel in the differential amplifier stage, rejecting >40 dB of uniform stray fields.