Monolithic Power Systems Inc. MCS1823GQTE-510BRN-P

Overview

MCS1823GQTE-510BRN-P from Monolithic Power Systems is a bidirectional linear Hall-effect current sensor IC with integrated over-current detection (OCD), operating from a 5V supply and rated for ±10A primary current. It delivers 200 mV/A sensitivity, ±2.5% total output error over temperature, 120kHz bandwidth, and 1µs OCD response time. It is used in motor control and switch-mode power supply current monitoring where compact size and fast fault detection are critical.

For engineers reviewing the MCS1823GQTE-510BRN-P datasheet, MCS1823GQTE-510BRN-P pinout, MCS1823GQTE-510BRN-P application, or MCS1823GQTE-510BRN-P equivalent, key selection considerations include its TQFN-12 (3mm×3mm) package footprint, differential Hall architecture for stray-field immunity, ratiometric/absolute output options, and programmable OCD threshold via external pull-up resistor.

Technical Context

The MCS1823GQTE-510BRN-P uses a differential Hall array to reject external magnetic gradients, with two physically separated sensing points yielding distinct coupling factors (PMCF1 = 1.15 mT/A, PMCF2 = 0.25 mT/A). Its spinning current technique minimizes offset drift, achieving ±15 mV zero-current offset over –40°C to +125°C.

It integrates a POR-regulated internal power supply, dynamic offset cancellation, and a dedicated open-drain /OCD output with 1µs propagation delay and 3–12% hysteresis. The analog VOUT is ratiometric by default (VOUT(Q) = VCC/2 at IP = 0A), supporting direct ADC interfacing without external reference scaling.

Key Specifications

Pinout & Package

The MCS1823GQTE-510BRN-P is housed in an ultra-small TQFN-12 package (3mm × 3mm, 0.5mm pitch, exposed thermal pad), optimized for high-density power electronics layouts and thermal dissipation.

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 and TLE4971-25S4, the MCS1823GQTE-510BRN-P offers superior board-area efficiency, faster OCD, and guaranteed ±2.5% accuracy across full temperature range-making it optimal for compact, high-reliability motor and power supply designs requiring analog simplicity and rapid fault response.

Availability

MCS1823GQTE-510BRN-P is available at Aetrix Electronics and suitable for motor control, switch-mode power supplies, and over-current fault protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MCS1823GQTE-510BRN-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 is designed for space-constrained, high-reliability current sensing in automotive, industrial, and computing power systems-emphasizing magnetic immunity, fast fault response, and factory-calibrated accuracy without external components.

FAQ

What is the maximum continuous primary current the MCS1823GQTE-510BRN-P can measure?

The device is rated for ±10A continuous bidirectional current (IPMAX = ±10A). While it maintains analog output beyond this range, nonlinearity increases outside ±10A. The 0.6mΩ internal conductor supports brief peak currents up to ±30A without thermal saturation, per absolute maximum ratings.

How is the over-current detection threshold configured for this part?

The OCD threshold is set by connecting an external pull-up resistor (10kΩ–500kΩ) between the /OCD pin and VCC. For MCS1823GQTE-510BRN-P, the default threshold is ±100% of IPMAX (±10A), but custom thresholds from ±5A to ±24A are achievable by selecting the appropriate resistor value per the datasheet's OCD configuration table.

Does the MCS1823GQTE-510BRN-P require external calibration for accurate current measurement?

No. The device is factory-trimmed for sensitivity and offset, delivering ±2.5% total output error across –40°C to +125°C without system-level calibration. Zero-current output is fixed at VCC/2 (2.5V @ 5V), and sensitivity is trimmed to 200 mV/A, enabling plug-and-play analog interfacing.

Can the MCS1823GQTE-510BRN-P be used in unidirectional current sensing applications?

Yes. Although MCS1823GQTE-510BRN-P is a bidirectional variant ('B' in part number), it supports unidirectional use by biasing the input current range (e.g., 0–10A) and interpreting VOUT relative to the 2.5V quiescent point. No hardware change is needed-only signal processing adaptation in the host MCU.

What isolation rating does the MCS1823GQTE-510BRN-P provide?

The device provides basic isolation per IEC 62368-1 with a maximum working voltage (VIOWM) of 100 VPK or 100 VDC. It is not reinforced or double-isolated; for high-voltage barrier applications (>100V), external galvanic isolation or optocoupling remains necessary.

Is a bypass capacitor required on the VCC pin?

Yes. A 0.1µF to 1µF ceramic capacitor must be placed between VCC and GND, as close as possible to the pin. This stabilizes the internal regulator, suppresses switching noise from the Hall sensor, and prevents oscillation-omission risks erratic output or false OCD triggering.

What is the thermal performance of the TQFN-12 package under full-load conditions?

With 0.6mΩ conductor resistance and ±10A current, power dissipation is ≤600mW. In a standard 4-layer PCB with 1-in² 2oz copper pour under the exposed thermal pad, junction-to-ambient θJA is ~65°C/W, resulting in ~40°C temperature rise above ambient-well within the –40°C to +125°C operating range.