Monolithic Power Systems Inc. MCS1823GQTE-330BAN-P

Overview

MCS1823GQTE-330BAN-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 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 automotive EPS and industrial servo drives.

For engineers reviewing the MCS1823GQTE-330BAN-P datasheet, MCS1823GQTE-330BAN-P pinout, MCS1823GQTE-330BAN-P application, or MCS1823GQTE-330BAN-P equivalent, this device delivers ratiometric analog output, factory-trimmed offset stability, differential magnetic field rejection, fast 1 µs OCD response, and TQFN-12 (3mm×3mm) packaging optimized for PCB area reduction in high-density power stages.

Technical Context

The MCS1823GQTE-330BAN-P employs a differential Hall array with spinning current calibration to cancel stray fields and suppress thermal offset drift, achieving ±2.5% total error across –40°C to +125°C. Its primary conductor (0.6 mΩ) carries up to ±30A while maintaining galvanic isolation per IEC62368-1 (VIOWM = 100 VPK/DC).

It integrates a dedicated open-drain /OCD output with user-configurable threshold (via external pull-up resistor), supporting OCD activation at ±100% of IPMAX with 1 µs propagation delay. The ratiometric VOUT scales linearly with VCC (3.3 V ±10%), delivering 1.65 V at zero current and ±1.32 V full-scale swing for ±30A input.

Key Specifications

Pinout & Package

TQFN-12 (3 mm × 3 mm, 0.5 mm pitch, exposed thermal pad) - ultra-small footprint optimized for high-current density PCB layouts with minimal trace inductance.

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 TLE4971-2500S4HAMA1, the MCS1823GQTE-330BAN-P uniquely balances ±30 A precision, ultra-small TQFN-12 size, integrated OCD, and ±2.5% error - making it optimal for space-constrained, safety-critical motor control where fast fault response and minimal PCB area are mandatory.

Availability

MCS1823GQTE-330BAN-P is available at Aetrix Electronics and suitable for motor control, automotive EPS, and switch-mode power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MCS1823GQTE-330BAN-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.

The MCS1823 product line targets compact, high-accuracy current sensing in automotive, industrial, and computing applications - emphasizing galvanic isolation, thermal stability, and integration of protection features like OCD.

FAQ

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

The device maintains linear output up to ±30 A (IPMAX) with ±2.5% total error. Beyond that, VOUT remains proportional but nonlinearity increases; saturation occurs at VOUT(H) = VCC – 0.3 V and VOUT(L) = 0.3 V - corresponding to ~±45 A at 3.3 V supply based on 44 mV/A sensitivity.

How is the OCD threshold configured for MCS1823GQTE-330BAN-P?

The /OCD pin is open-drain and requires an external pull-up resistor (10–500 kΩ) to VCC. Threshold is set by resistor value: lower resistance raises threshold (up to 240% IPMAX), higher resistance lowers it (down to 50% IPMAX). No configuration pins or registers are needed - fully hardware-programmable.

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

No. The device uses spinning current technique and factory trimming to achieve ±10 mV offset voltage over –40°C to +125°C. Zero-current output is fixed at VCC/2 = 1.65 V (ratiometric mode), eliminating need for system-level offset calibration in production test.

Can MCS1823GQTE-330BAN-P be used in unidirectional current sensing applications?

Yes - though MCS1823GQTE-330BAN-P is bidirectional (B suffix), its output spans 0.33 V to 2.97 V for 0–30 A unidirectional use (with absolute output option). For dedicated unidirectional variants, MPS offers part numbers ending in 'U', such as MCS1823GQTE-330URN.

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

With 0.6 mΩ conductor resistance, power dissipation is 540 mW at 30 A DC. In still air with 2-layer 1 oz copper, junction-to-ambient θJA ≈ 65°C/W yields ~35°C rise - well within the –40°C to +125°C operating range. Thermal pad soldering is mandatory for reliable operation.

Is the /OCD output latched or non-latching on MCS1823GQTE-330BAN-P?

The /OCD output is non-latching (N suffix in part number). It asserts low during over-current and returns high automatically when current falls below the hysteresis band (3–12% of OCD threshold), enabling self-clearing fault detection without MCU intervention.

What PCB layout practices maximize magnetic immunity for MCS1823GQTE-330BAN-P?

Route IP+ and IP− traces symmetrically and in parallel beneath the IC's centerline; avoid placing ferrite beads, transformers, or high-dI/dt traces within 5 mm of the package. Use solid ground plane under the device and isolate sensitive analog traces (VOUT, GND) from noisy digital domains.