Monolithic Power Systems Inc. MCS1823GQTE-330BRN-P

Overview

MCS1823GQTE-330BRN-P from Monolithic Power Systems is a bidirectional linear Hall-effect current sensor IC with integrated over-current detection (OCD), designed for high-accuracy AC/DC current sensing in space-constrained power systems. It features ±30A rated current range, 44 mV/A sensitivity, 0.6 mΩ internal conductor resistance, ±2.5% total output error, and 120 kHz bandwidth - enabling precise motor phase current monitoring in BLDC inverters.

For engineers reviewing the MCS1823GQTE-330BRN-P datasheet, MCS1823GQTE-330BRN-P pinout, MCS1823GQTE-330BRN-P application, or MCS1823GQTE-330BRN-P equivalent, this device supports ratiometric or absolute analog output, offers factory-trimmed accuracy, differential magnetic field rejection, and sub-1µs OCD response - critical for real-time fault protection in automotive and industrial power stages.

Technical Context

The MCS1823GQTE-330BRN-P uses a differential Hall array to cancel stray magnetic fields and implements spinning current offset cancellation for stable zero-current output voltage (1.65 V at 3.3 V supply). Its primary conductor (IP+/IP−) carries up to ±30 A with only 0.6 mΩ resistance, generating a magnetic field sensed at two spatially separated Hall transducers (PMCF1 = 1.15 mT/A, PMCF2 = 0.25 mT/A).

Signal conditioning includes a bandwidth-tuned amplifier, temperature-compensated sensitivity control, and an open-drain /OCD output with user-configurable threshold (via external pull-up resistor) and 1 µs response time. The device operates from a 3.3 V supply (3.0–3.6 V), draws 9–12 mA, and delivers VOUT proportional to IP with ±0.5% nonlinearity and ±10 mV offset voltage over −40°C to +125°C.

Key Specifications

Pinout & Package

Package: TQFN-12 (3 mm × 3 mm, 0.75 mm height), thermally enhanced with exposed pad. RoHS-compliant, halogen-free, MSL Level 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-30AB-T and TLE4971-25S4-10-1-5, the MCS1823GQTE-330BRN-P uniquely combines ultra-small TQFN-12 packaging, user-programmable OCD, and guaranteed ±2.5% accuracy at 3.3 V - making it optimal for space- and timing-constrained 3.3 V embedded motor control designs.

Availability

MCS1823GQTE-330BRN-P is available at Aetrix Electronics and suitable for motor control, automotive battery management, and high-density switch-mode power supplies requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.

Supply support for MCS1823GQTE-330BRN-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 - with a focus on efficiency, integration, and reliability.

The MCS1823 product line delivers ultra-compact, high-accuracy Hall-effect current sensors for next-generation power conversion and motor drive systems where board space, thermal performance, and real-time fault response are critical design constraints.

FAQ

What is the maximum continuous current the MCS1823GQTE-330BRN-P can measure without saturation?

The device is rated for ±30 A with guaranteed linearity and ±2.5% total error. It continues delivering proportional VOUT beyond ±30 A until reaching saturation voltage (VCC − 0.3 V), but nonlinearity increases outside the rated range. For sustained accuracy, operate within ±30 A.

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

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 (±30 A) by selecting RPULLUP value per datasheet Figure 11. No internal programming or EEPROM is needed - configuration is purely analog and resistor-based.

Does the MCS1823GQTE-330BRN-P require external calibration for production use?

No. The device is factory-trimmed for sensitivity and zero-current offset, achieving ±2.5% total output error over temperature and lifetime without system-level calibration. Only standard PCB layout best practices (e.g., symmetric current path, proper grounding) are required.

Can the MCS1823GQTE-330BRN-P be used with a 5 V supply?

No - the "3" in the part number suffix (GQTE-330BRN-P) denotes 3.3 V operation. This variant is specified only for 3.0–3.6 V supply. For 5 V operation, use MCS1823GQTE-530BRN (5 V supply, ±30 A, 66 mV/A).

What is the isolation rating, and does it meet safety standards?

The MCS1823GQTE-330BRN-P provides basic isolation per IEC62368-1 with VIOWM = 100 VPK or VDC. It is not reinforced or double-insulated; system-level isolation compliance requires additional design measures (e.g., creepage/clearance, enclosure, external barriers) per end-equipment standards.

Is the TQFN-12 package thermally enhanced, and how should the exposed pad be handled?

Yes - the TQFN-12 includes an exposed thermal pad. It must be soldered to a large copper pour (minimum 100 mm²) connected to GND for optimal thermal performance and electrical stability. Thermal resistance θJA is specified at 45°C/W with 2-layer 2 oz Cu board and 100 mm² pad.

How does the differential Hall architecture improve immunity to external magnetic fields?

Two physically separated Hall elements sense opposing magnetic field gradients generated by the same current path. Their differential output cancels uniform external fields (e.g., from nearby transformers), while preserving signal from the intended conductor - eliminating need for magnetic shielding in most applications.