Monolithic Power Systems Inc. MCS1823GQTE-510BRN-Z

Overview

MCS1823GQTE-510BRN-Z 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 ±10A rated current range, 200 mV/A sensitivity, 0.6mΩ internal conductor resistance, ±2.5% total output error, and 120kHz bandwidth - enabling precise motor phase current monitoring in industrial inverters.

For engineers reviewing the MCS1823GQTE-510BRN-Z datasheet, MCS1823GQTE-510BRN-Z pinout, MCS1823GQTE-510BRN-Z application, or MCS1823GQTE-510BRN-Z equivalent, this device delivers ratiometric analog output, sub-2µs OCD response, differential magnetic field immunity, and TQFN-12 (3mm×3mm) packaging optimized for PCB area reduction in high-density power modules.

Technical Context

The MCS1823GQTE-510BRN-Z employs a differential Hall array with spinning current offset cancellation to reject external magnetic gradients while measuring primary current via integrated 0.6mΩ copper conductor. Its functional block includes dynamic offset cancellation, POR-regulated internal supply, and bandwidth-tuned Hall driver circuitry.

It supports 5V single-supply operation with 4.5–5.5V input range, delivers ratiometric VOUT referenced to VCC, and implements open-drain /OCD output with user-configurable threshold (via external pull-up resistor) and 1µs response time - all within a thermally enhanced TQFN-12 package rated for -40°C to +125°C junction temperature.

Key Specifications

Pinout & Package

TQFN-12 (3mm × 3mm, 0.5mm pitch) package with exposed thermal 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 ACS724LLCB-10AU-T and TLE4971-25U5-S, the MCS1823GQTE-510BRN-Z offers optimal balance of miniaturization (3mm×3mm), 120kHz bandwidth, and ±2.5% error - making it preferred for space-constrained, cost-sensitive industrial motor drives where moderate accuracy suffices.

Availability

MCS1823GQTE-510BRN-Z is available at Aetrix Electronics and suitable for motor control, switch-mode power supplies, and automotive subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MCS1823GQTE-510BRN-Z 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 current sensors.

The MCS1823 product line targets compact, high-efficiency current sensing in industrial motor drives and power conversion systems - emphasizing ultra-small packaging, magnetic immunity, and integrated fault protection.

FAQ

What is the maximum continuous primary current the MCS1823GQTE-510BRN-Z can handle without saturation?

The device maintains linear output up to ±10A (IPMAX) with ±2.5% total error. Beyond that, VOUT remains proportional but nonlinearity increases; saturation occurs at VOUT = VCC – 0.5V (high) or 0.5V (low) - corresponding to ~±15A at 5V supply based on 200 mV/A sensitivity.

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

The /OCD pin is open-drain and requires an external pull-up resistor (10kΩ–500kΩ) to VCC. Threshold is set between 50% and 240% of IPMAX (±10A) by selecting RPULLUP value per datasheet Figure 10; no programming or external components beyond the resistor are needed.

Does the MCS1823GQTE-510BRN-Z require external calibration for zero-current offset?

No. Spinning current technique and factory trimming ensure ≤±15mV zero-current offset drift over -40°C to +125°C. At 200 mV/A sensitivity, this equates to <±75mA equivalent current error - sufficient for most motor control and PSU applications without system-level calibration.

Can the VOUT pin drive a standard SAR ADC directly?

Yes. VOUT has 4.7kΩ minimum resistive load and 4.7nF maximum capacitive load specifications. It interfaces directly with most 12-bit+ SAR ADCs (e.g., TI ADS7953, ADI AD7476) when series RC filter (e.g., 100Ω + 1nF) is used to limit bandwidth and reduce noise without affecting 120kHz signal fidelity.

Is isolation certification provided for the MCS1823GQTE-510BRN-Z?

The device meets basic isolation per IEC62368-1 with VIOWM = 100 VPK/DC, verified by internal creepage/clearance design. It is not reinforced or double-isolated; for safety-critical applications requiring higher isolation, external galvanic isolation (e.g., Si8920) must be added in series with VOUT or /OCD signals.

What is the thermal performance limitation of the TQFN-12 package under 10A continuous current?

With 0.6mΩ conductor resistance, power dissipation is 60mW at 10A. In still air with 2-layer PCB (2oz Cu, 1in² copper pour under thermal pad), junction-to-ambient θJA ≈ 90°C/W yields ~5.4°C rise - well within the -40°C to +125°C operating range without forced cooling or heatsink.

How does the differential Hall architecture improve measurement accuracy in noisy environments?

The dual Hall transducers sense magnetic field difference between two spatially separated points, rejecting uniform external fields (e.g., from nearby inductors or cables) while preserving gradient field from the integrated conductor. This achieves >40dB common-mode rejection - confirmed by test data showing <0.1% error under 100 Oe external field exposure.