Monolithic Power Systems Inc. MCS1823GQTE-530BRN-P

Overview

MCS1823GQTE-530BRN-P from Monolithic Power Systems is a bidirectional linear Hall-effect current sensor IC with integrated over-current detection (OCD), 5V supply, ±30A rated range, 66 mV/A sensitivity, and 120kHz bandwidth. It uses differential Hall sensing to reject stray magnetic fields and features 0.6mΩ internal conductor resistance for low-loss current measurement in motor control and power supply monitoring.

For engineers reviewing the MCS1823GQTE-530BRN-P datasheet, MCS1823GQTE-530BRN-P pinout, MCS1823GQTE-530BRN-P application, or MCS1823GQTE-530BRN-P equivalent, key selection criteria include its ratiometric/absolute output mode, ±2.5% total accuracy over –40°C to +125°C, 1µs OCD response time, and TQFN-12 (3mm×3mm) ultra-small package for space-constrained PCB layouts.

Technical Context

The MCS1823GQTE-530BRN-P implements a spinning-current Hall plate architecture with dual magnetic coupling factors (PMCF1 = 1.15 mT/A, PMCF2 = 0.25 mT/A) to achieve stable offset cancellation. Its functional block includes dynamic offset cancellation, POR regulator, temperature sensor, and BW tuner for consistent 120kHz signal fidelity across temperature.

It delivers ratiometric or absolute analog VOUT proportional to primary current (IP), with zero-current output at VCC/2 (2.5V @ 5V supply). The /OCD pin provides open-drain, active-low fault signaling with user-configurable threshold (50–240% of IPMAX) via external pull-up resistor (10kΩ–500kΩ).

Key Specifications

Pinout & Package

TQFN-12 (3mm × 3mm, 0.5mm pitch) with exposed thermal pad; ultra-compact footprint optimized for high-density power electronics layouts and thermally constrained environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCB-30AB-T, MCS1823GQTE-530BRN-P offers 50% smaller footprint and 50% higher bandwidth; versus TLE4971-25S4-10-1-50, it delivers 65% higher sensitivity in half the package area-making it optimal for miniaturized, high-switching-frequency power systems.

Availability

MCS1823GQTE-530BRN-P is available at Aetrix Electronics and suitable for motor control, switch-mode power supplies, audio driver current control, and over-current fault protection requiring stable component supply across automotive-grade temperature ranges and high-volume production cycles.

Supply support for MCS1823GQTE-530BRN-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 current sensors for industrial, computing, and automotive markets.

The MCS1823 product line targets compact, high-accuracy current sensing in space- and thermally constrained power conversion systems-designed to replace bulky shunt+op-amp solutions with monolithic, isolated alternatives.

FAQ

What is the maximum continuous primary current the MCS1823GQTE-530BRN-P can handle without damage?

The device is rated for ±30A continuous primary current (IPMAX) with guaranteed linearity and accuracy. While the internal conductor withstands higher currents, sustained operation beyond ±30A increases nonlinearity and thermal drift beyond the ±2.5% total error specification. Absolute maximum ratings limit junction temperature to 165°C-designers must verify thermal performance under worst-case ambient and copper pour conditions.

Does the MCS1823GQTE-530BRN-P provide galvanic isolation between primary current path and signal outputs?

Yes-it achieves reinforced isolation per IEC62368-1 with a 100 VPK or VDC working voltage rating. The primary conductor (IP+/IP-) is physically and electrically isolated from the signal pins (VOUT, /OCD, GND, VCC) by the molded compound and internal dielectric structure. No external isolation components are needed for basic safety compliance in end equipment.

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

MCS1823GQTE-530BRN-P has a fixed OCD threshold at ±100% of IPMAX (i.e., ±30A), as indicated by the "BRN" suffix (B = bidirectional, R = ratiometric, N = non-latched OCD). Threshold adjustment is achieved by selecting the external pull-up resistor on the /OCD pin: values from 10kΩ to 500kΩ scale the threshold from 50% to 240% of ±30A, per the datasheet's RPULLUP specification.

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

Yes-VOUT is specified to drive a 4.7kΩ resistive load with up to 4.7nF capacitive load, matching typical SAR and delta-sigma ADC input requirements. Its ratiometric output (2.5V at IP=0A, ±198mV full-scale) aligns with 5V-referenced 12-bit+ ADCs, eliminating need for external op-amps or level-shifting in most implementations.

What is the purpose of the NC pins (7–10) in the TQFN-12 package?

Pins 7–10 are no-connect (NC) terminals-unbonded die pads with no internal connection. They must remain unconnected on the PCB: no traces, vias, or solder mask openings are permitted. Leaving them floating avoids unintended coupling paths that could degrade noise immunity or thermal performance in high-precision current measurements.

Is the MCS1823GQTE-530BRN-P RoHS-compliant and halogen-free?

Yes-all MPS parts, including MCS1823GQTE-530BRN-P, are lead-free, halogen-free, and fully compliant with the EU RoHS directive. Full material declarations and green status documentation are available on the Monolithic Power Systems website under Quality Assurance resources.