Monolithic Power Systems Inc. MCS1823GQTE-330BAN-Z

Overview

MCS1823GQTE-330BAN-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 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-330BAN-Z datasheet, MCS1823GQTE-330BAN-Z pinout, MCS1823GQTE-330BAN-Z application, or MCS1823GQTE-330BAN-Z equivalent, key selection considerations include its TQFN-12 (3mm×3mm) ultra-small footprint, differential Hall array immunity to stray fields, ratiometric or absolute VOUT options, and factory-trimmed offset stability for industrial motor control and power supply fault protection.

Technical Context

The MCS1823GQTE-330BAN-Z implements a spinning-current Hall plate architecture with dual magnetic coupling factors (PMCF1 = 1.15 mT/A, PMCF2 = 0.25 mT/A) to achieve low offset drift and eliminate hysteresis. Its differential sensing rejects external gradient magnetic fields while maintaining linearity across -40°C to +125°C junction temperature.

It integrates a dedicated OCD comparator with 1 µs response time, configurable via external pull-up resistor (10–500 kΩ) to set thresholds from 50% to 240% of IPMAX. The analog VOUT is ratiometric (VCC/2 at zero current) and supports load detection up to 4.7 kΩ with 4.7 nF capacitive loading.

Key Specifications

Pinout & Package

TQFN-12 (3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad) package with wettable flanks for automated optical inspection and enhanced thermal dissipation in compact PCB layouts.

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 TLE4971-25S4H, the MCS1823GQTE-330BAN-Z offers superior board-area efficiency, lower conduction loss, guaranteed ±2.5% error over full temperature range, and integrated hardware OCD - making it optimal for space- and performance-critical motor drive and power conversion designs.

Availability

MCS1823GQTE-330BAN-Z 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-330BAN-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 analog sensors.

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

FAQ

What is the maximum continuous current the MCS1823GQTE-330BAN-Z can measure without saturation?

The device maintains linear output up to ±30 A (IPMAX) with guaranteed ±2.5% total error. Beyond this range, VOUT remains proportional but nonlinearity increases; saturation occurs near ±30 A × 44 mV/A = ±1.32 V, limited by VCC – 0.3 V (3.0 V at 3.3 V supply). Thermal derating applies above 85°C ambient.

How is the OCD threshold configured for this specific part number?

MCS1823GQTE-330BAN-Z has "N" in the suffix, indicating non-latched OCD output. Its threshold is fixed at ±100% of IPMAX (±30 A) and cannot be adjusted externally. Unlike "R" or "L" variants, no pull-up resistor is needed - /OCD asserts low immediately upon exceeding ±30 A and clears when current falls below hysteresis (±27 A).

Does the MCS1823GQTE-330BAN-Z require external calibration for zero-current offset?

No. The device uses factory-trimmed spinning-current Hall plates and dynamic offset cancellation, delivering ±10 mV zero-current offset over -40°C to +125°C without user calibration. This eliminates production-line trimming steps and ensures consistent performance across batches.

Can the VOUT pin drive an ADC directly without signal conditioning?

Yes. VOUT is ratiometric (1.65 V at zero current, ±1.32 V full scale), rail-to-rail compatible with 3.3 V ADC references, and specified for 4.7 kΩ resistive and 4.7 nF capacitive loads. For best SNR, route VOUT with guard traces and use a 100 nF local decoupling cap at the ADC input.

What is the thermal performance limitation of the TQFN-12 package under 30 A continuous current?

With 0.6 mΩ conductor resistance, power dissipation is 0.54 W at 30 A RMS. In still air with 2 oz copper and 2 thermal vias to inner ground planes, junction-to-ambient θJA ≈ 65°C/W, resulting in ~35°C rise above ambient. Derate linearly above 85°C case temperature per datasheet thermal limits.

Is the /OCD output compatible with 5 V logic systems when VCC = 3.3 V?

No. /OCD is open-drain with max 0.3 V low-level voltage when pulled to VCC (3.3 V). To interface with 5 V logic, use a level-shifting buffer or a pull-up resistor to 5 V with series current-limiting resistor - but note that exceeding 6.5 V on /OCD violates absolute maximum ratings.

How does the differential Hall array reject stray magnetic fields in motor applications?

The integrated dual Hall sensors measure magnetic field difference (B1 – B2) at two spatially separated points. Uniform external fields induce equal voltages in both sensors, canceling out in the differential amplifier stage. Only the field gradient from the primary conductor's asymmetric geometry produces net output - rejecting EMI from nearby inductors or cables.