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Monolithic Power Systems Inc. MCQ1823GQTE-330BRNAEC-Z
- Part No.:
- MCQ1823GQTE-330BRNAEC-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Current Sensors
- Package:
- 12-PowerWFQFN
- Datasheet:
-
MCQ1823GQTE-330BRNAEC-Z.pdf
- Description:
- AUTOMOTIVE-GRADE, LINEAR HALL-EF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCQ1823GQTE-330BRNAEC-Z from Monolithic Power Systems is an automotive-grade linear Hall-effect current sensor IC with integrated over-current detection (OCD), designed for bidirectional ±30A DC/AC current sensing in high-reliability power paths. It features 44 mV/A sensitivity, ±2.5% total output error over temperature, 120kHz bandwidth, and a 0.6mΩ internal conductor. Its primary application includes real-time motor phase current monitoring in AEC-Q100-compliant EV traction inverters.
For engineers reviewing the MCQ1823GQTE-330BRNAEC-Z datasheet, MCQ1823GQTE-330BRNAEC-Z pinout, MCQ1823GQTE-330BRNAEC-Z application, or MCQ1823GQTE-330BRNAEC-Z equivalent, key selection criteria include ratiometric VOUT scaling, 1µs OCD response time, TQFN-12 (3mm×3mm) package thermal performance, and differential Hall array immunity to stray magnetic fields in high-density power modules.
Technical Context
The MCQ1823GQTE-330BRNAEC-Z implements a differential Hall transducer pair that cancels homogeneous and gradient external magnetic fields, enabling accurate current measurement in magnetically noisy environments such as motor drives and on-board chargers. Its spinning current offset cancellation technique ensures stable zero-current output voltage (1.65V at VCC = 3.3V) across -40°C to +125°C junction temperature.
It integrates a fast open-drain /OCD output with user-configurable threshold (±100% of IPMAX by default), 1µs propagation delay from over-current event to /OCD assertion, and supports ratiometric output scaling-ensuring VOUT remains proportional to both sensed current and supply voltage for robustness against VCC ripple in automotive 12V systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Current Range | ±30A bidirectional sensing range, enabling full-scale measurement of motor phase currents up to 30A peak in traction inverters. |
| Sensitivity | 44 mV/A, delivering 1.32V full-scale output swing (±30A × 44 mV/A) for high SNR analog feedback in closed-loop control. |
| Total Output Error | ±2.5% over -40°C to +125°C, ensuring calibrated current feedback without per-unit calibration in production. |
| Bandwidth | 120kHz, supporting accurate capture of PWM-switching harmonics and transient fault currents in SiC/GaN-based converters. |
| OCD Response Time | 1µs, enabling sub-microsecond fault shutdown to protect IGBTs/MOSFETs during short-circuit events. |
| Conductor Resistance | 0.6mΩ, minimizing power loss (1.8W at 30A) and self-heating in continuous high-current operation. |
| Supply Voltage | 3.3V ±0.3V, compatible with standard automotive domain controller LDO rails and reducing system-level voltage translation complexity. |
Pinout & Package
The MCQ1823GQTE-330BRNAEC-Z is housed in an ultra-small TQFN-12 (3mm × 3mm, 0.5mm pitch) package with wettable flanks for automated optical inspection (AOI). The exposed thermal pad enhances thermal dissipation in high-power density layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IP+ | Primary current input (+) | Fused high-side terminal for main current path; connects directly to battery or inverter DC-link positive rail. |
| 3, 4 IP- | Primary current input (-) | Fused low-side terminal; completes current loop through internal 0.6mΩ conductor for magnetic field generation. |
| 5 GND | Signal ground reference | Common return for analog output and OCD logic; must be star-connected to minimize ground bounce in high-di/dt applications. |
| 6 /OCD | Open-drain over-current flag | Asserts low within 1µs when IP exceeds ±30A; requires external pull-up (10kΩ–500kΩ) to VCC for threshold tuning. |
| 7–10 NC | No connect | Internally unconnected pins; must remain floating or grounded per layout best practices to avoid parasitic coupling. |
| 11 VOUT | Analog current-proportional output | Ratiometric 0–3.3V output (1.65V at IP = 0A); interfaces directly to 12-bit SAR ADCs without level-shifting. |
| 12 VCC | 3.3V supply input | Requires 0.1µF–1µF ceramic bypass capacitor to GND; UVLO threshold at 2.5V ensures clean startup under brownout conditions. |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall sensing | Rejects external magnetic interference up to 100 Oe gradient, eliminating need for magnetic shielding in crowded power stages. |
| AEC-Q100 Grade 1 qualification | Validated for automotive ambient temperatures (-40°C to +125°C) and lifetime reliability in safety-critical systems (ASIL-B capable). |
| Factory-trimmed accuracy | Eliminates post-solder calibration; ±2.5% total error includes gain, offset, linearity, and temperature drift over full operating range. |
| Fast OCD with programmable threshold | Enables system-level fault response tuning: 1µs detection latency plus adjustable trip point (50–240% of ±30A) via external resistor. |
| TQFN-12 ultra-small footprint | Reduces PCB area by >40% vs. legacy SOIC-8 current sensors, enabling placement directly on high-current traces without vias. |
Applications
| Motor Control | Audio Driver Current Control |
|---|---|
Use Scenario: Real-time phase current sensing in 3-phase BLDC motor controllers for electric power steering (EPS) and HVAC blowers. IC Role / Device Role / Timing Role: Primary current feedback sensor providing isolated, high-bandwidth analog signal to MCU ADC for field-oriented control (FOC) loops. Use Value: 120kHz bandwidth captures PWM edge transients; ±2.5% error enables torque ripple <2% without software compensation. | Use Scenario: Monitoring output stage current in Class-D audio amplifiers to prevent speaker coil overheating and amplifier latch-up. IC Role / Device Role / Timing Role: High-speed current monitor feeding protection logic and dynamic headroom adjustment circuits. Use Value: 1µs OCD response prevents thermal damage during short-circuit events; 0.6mΩ conductor avoids insertion loss in high-fidelity signal paths. |
| Automotive Systems | Load Detection and Management |
Use Scenario: Battery current monitoring in 12V/48V dual-battery architectures for start-stop systems and energy recuperation. IC Role / Device Role / Timing Role: Bidirectional current sensor interfacing with battery management unit (BMU) for state-of-charge (SoC) and health (SoH) estimation. Use Value: ±30A range covers cranking surge (up to 250A peak) and regen braking; AEC-Q100 qualification ensures 15-year vehicle lifecycle compliance. | Use Scenario: Detecting abnormal current draw in body control modules (BCM) for smart fuse replacement and predictive maintenance. IC Role / Device Role / Timing Role: Low-power current monitor triggering diagnostic alerts when load current deviates beyond ±10% of nominal. Use Value: Ratiometric VOUT eliminates supply variation errors; 9mA quiescent current enables always-on monitoring without battery drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar linear Hall-effect current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACS724LLCTR-30AB-T | Higher 1.2mΩ conductor resistance; ±1.5% typical accuracy at 25°C only; no integrated OCD output. | Lacks fast hardware fault signaling; requires external comparator for over-current protection. | Select if OCD is implemented digitally and lower cost outweighs missing 1µs hardware response. |
| TLE4971-2500S4HALA | 2500A/s slew rate limit; ±0.7% typical offset drift over temperature; 100kHz bandwidth. | Lower bandwidth restricts use in >20kHz PWM systems; optimized for slower industrial actuators. | Select for high-precision static current measurement where bandwidth is secondary to long-term stability. |
Compared with ACS724LLCTR-30AB-T and TLE4971-2500S4HALA, the MCQ1823GQTE-330BRNAEC-Z delivers superior magnetic immunity, integrated hardware OCD, and higher bandwidth-making it optimal for automotive traction and fast-switching power conversion where fault response time and noise rejection are critical.
Availability
MCQ1823GQTE-330BRNAEC-Z is available at Aetrix Electronics and suitable for motor control, automotive battery management, and high-reliability power supply design requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MCQ1823GQTE-330BRNAEC-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 for automotive, industrial, and computing markets.
The MCQ1823 product line targets automotive electrification applications, delivering compact, AEC-Q100-qualified current sensing solutions with integrated fault detection for next-generation traction inverters, on-board chargers, and 48V mild-hybrid systems.
FAQ
What is the maximum continuous current the MCQ1823GQTE-330BRNAEC-Z can measure?
The device is rated for ±30A bidirectional continuous current sensing. Its 0.6mΩ internal conductor generates ≤1.8W of heat at 30A RMS, and thermal derating is required above +105°C ambient per the datasheet's thermal resistance (θJA = 120°C/W) and power dissipation curves.
Does the MCQ1823GQTE-330BRNAEC-Z require external calibration?
No. It is factory-trimmed for sensitivity, offset, and linearity, achieving ±2.5% total output error over -40°C to +125°C without end-of-line calibration. System-level calibration is optional but not necessary for most ASIL-B functional safety requirements.
How is the over-current detection threshold set?
The /OCD pin uses an external pull-up resistor (10kΩ–500kΩ) between /OCD and VCC to configure the OCD threshold from 50% to 240% of ±30A. For the -BRN suffix, the default threshold is ±30A (100% IPMAX); no resistor is needed for this setting.
Can the MCQ1823GQTE-330BRNAEC-Z be used with a 5V supply?
No. The "3" in the part number (MCQ1823GQTE-330BRNAEC-Z) denotes 3.3V supply operation only. For 5V supply, use MCQ1823GQTE-530BRNAEC-Z, which has different sensitivity (66 mV/A) and electrical characteristics.
What isolation rating does the MCQ1823GQTE-330BRNAEC-Z provide?
It provides basic isolation per IEC62368-1 with a maximum working voltage (VIOWM) of 100 VPK or VDC. This is sufficient for galvanic separation between low-voltage control circuitry and high-current power paths in 12V/48V automotive systems, but not for mains-referenced high-voltage battery monitoring.
Is the output voltage ratiometric or absolute?
The MCQ1823GQTE-330BRNAEC-Z uses ratiometric output scaling: VOUT = (IP × 44 mV/A) + 1.65V, where the 1.65V zero-current offset and full-scale swing scale proportionally with VCC. This maintains measurement accuracy despite ±10% VCC ripple common in automotive systems.
What is the recommended PCB layout for optimal magnetic immunity?
Place the device directly over a solid ground plane beneath the current-carrying trace; avoid routing high-di/dt signals or ferrite beads near IP+ and IP- pads; keep VCC bypass capacitor within 2mm of Pin 12; and maintain ≥3mm clearance from transformers, inductors, or other current-carrying conductors to minimize stray field coupling.
MCQ1823GQTE-330BRNAEC-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 12-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- For Measuring:
- AC/DC
- Sensor Type:
- Hall Effect
- Current - Sensing:
- 30A
- Number of Channels:
- 1
- Output:
- Ratiometric, Voltage
- Sensitivity:
- 44mV/A
- Frequency:
- 120kHz
- Linearity:
- ±0.5%
- Accuracy:
- ±2.5%
- Voltage - Supply:
- 3V ~ 3.6V
- Response Time:
- 4µs
- Current - Supply (Max):
- 12mA
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Polarization:
- Bidirectional
- Mounting Type:
- Surface Mount, Wettable Flank
- Supplier Device Package:
- 12-TQFN (3x3)
MCQ1823GQTE-330BRNAEC-Z FAQ
1.How can I place an order for MCQ1823GQTE-330BRNAEC-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MCQ1823GQTE-330BRNAEC-Z on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MCQ1823GQTE-330BRNAEC-Z reliable?
The price and inventory of MCQ1823GQTE-330BRNAEC-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCQ1823GQTE-330BRNAEC-Z is usually 5 days.
3.What payment methods are accepted for MCQ1823GQTE-330BRNAEC-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCQ1823GQTE-330BRNAEC-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCQ1823GQTE-330BRNAEC-Z?
MCQ1823GQTE-330BRNAEC-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCQ1823GQTE-330BRNAEC-Z order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MCQ1823GQTE-330BRNAEC-Z?
For technical support, including MCQ1823GQTE-330BRNAEC-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCQ1823GQTE-330BRNAEC-Z requirements.
6.How does Aetrix verify that MCQ1823GQTE-330BRNAEC-Z is sourced from the original manufacturer or authorized distributors?
All MCQ1823GQTE-330BRNAEC-Z products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MCQ1823GQTE-330BRNAEC-Z meets industry standards.
7.What is the process for return or replacement of MCQ1823GQTE-330BRNAEC-Z?
All MCQ1823GQTE-330BRNAEC-Z units undergo pre-shipment inspection (PSI). If there is an issue with MCQ1823GQTE-330BRNAEC-Z, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MCQ1823GQTE-330BRNAEC-Z part is unused and in its original packaging.
Return procedure for MCQ1823GQTE-330BRNAEC-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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