Monolithic Power Systems Inc. MCS1823GQTE-530BRN-Z

Overview

MCS1823GQTE-530BRN-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 power paths. It features ±30A rated current range, 66 mV/A sensitivity, 0.6 mΩ internal conductor resistance, 120 kHz bandwidth, and operates from a 5V supply. It delivers ratiometric analog output voltage proportional to primary current and supports fast OCD response within 1 µs-ideal for motor control and switch-mode power supply protection.

For engineers reviewing the MCS1823GQTE-530BRN-Z datasheet, MCS1823GQTE-530BRN-Z pinout, MCS1823GQTE-530BRN-Z application, or MCS1823GQTE-530BRN-Z equivalent, key selection considerations include its TQFN-12 package footprint, differential Hall array immunity to stray magnetic fields, ±2.5% total output error over temperature, factory-trimmed zero-current offset, and configurable OCD threshold via external pull-up resistor.

Technical Context

The MCS1823GQTE-530BRN-Z employs a differential Hall array architecture that cancels external magnetic field gradients, enabling stable operation in electrically noisy environments. Its spinning current technique minimizes offset drift, while dynamic offset cancellation and on-chip temperature compensation maintain accuracy across –40°C to +125°C junction temperature.

It integrates a low-resistance (0.6 mΩ) primary conductor path with fused IP+ and IP– terminals, supporting up to ±30A continuous current. The analog VOUT is ratiometric to VCC, and the open-drain /OCD output triggers within 1 µs when primary current exceeds ±IPMAX, with user-adjustable threshold (50–240% of IPMAX) via external RPULLUP (10 kΩ–500 kΩ).

Key Specifications

Pinout & Package

Package: TQFN-12 (3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad). Ultra-compact footprint reduces PCB area by >40% vs. SOIC-8 current sensors while maintaining isolation integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ACS724LLCBTR-30AB-T and TLE4971-30D500I, the MCS1823GQTE-530BRN-Z uniquely combines ultra-small TQFN-12 packaging, 1 µs OCD response, and resistor-programmable trip threshold-making it optimal for industrial motor drives and compact SMPS where board area and fault reaction speed are critical.

Availability

MCS1823GQTE-530BRN-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-530BRN-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 space-constrained, high-reliability current sensing in industrial motor drives, renewable energy inverters, and automotive auxiliary systems-emphasizing magnetic immunity, thermal robustness, and fast fault response.

FAQ

What is the maximum continuous current rating for MCS1823GQTE-530BRN-Z?

The device is rated for ±30A continuous bidirectional current. Its 0.6 mΩ internal conductor resistance results in only 540 mW conduction loss at ±30A, enabling reliable operation without forced air cooling in typical PCB layouts with 2 oz copper and thermal vias.

Does MCS1823GQTE-530BRN-Z require external calibration for zero-current offset?

No. The device uses factory-trimmed offset and spinning current cancellation, delivering ±10 mV max offset voltage over –40°C to +125°C. System-level zero-current calibration is optional and typically unnecessary for applications tolerating <±0.15A equivalent error.

How is the OCD threshold configured, and what resistor values support 150% of IPMAX?

The OCD threshold is set by an external pull-up resistor (RPULLUP) from /OCD to VCC. For 150% of ±30A (i.e., ±45A), use RPULLUP = 100 kΩ per MPS characterization data-verified across temperature and process corners in the MCS1823 datasheet Figure 12.

Can MCS1823GQTE-530BRN-Z be used in unidirectional current sensing applications?

Yes. Though this variant is bidirectional ('B' in part number), it supports unidirectional use by grounding the negative side of the current path and interpreting VOUT relative to 0.5×VCC. Sensitivity remains 66 mV/A, and total error stays within ±2.5% across 0–30A range.

What isolation rating does MCS1823GQTE-530BRN-Z provide between primary current path and signal pins?

The device meets basic isolation per IEC 62368-1 with a maximum working voltage (VIOWM) of 100 VPK or VDC. This supports safe operation in 24V–48V industrial bus systems but does not qualify for reinforced isolation in mains-connected applications.

Is the TQFN-12 package lead-free and RoHS-compliant?

Yes. All MCS1823 variants, including MCS1823GQTE-530BRN-Z, are lead-free, halogen-free, and fully compliant with the EU RoHS directive. The package uses NiPdAu plating and is MSL Level 1 (unlimited floor life at ≤30°C/60% RH).

What is the recommended bypass capacitor for VCC, and where should it be placed?

A 0.1 µF to 1 µF X7R ceramic capacitor must be placed between VCC and GND, with minimum trace length (<2 mm) and direct connection to the VCC and GND pins. This ensures stable internal regulator operation and suppresses high-frequency noise coupling into the Hall sensor core.