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Monolithic Power Systems Inc. MCQ1823GQTE-330BALAEC-Z
- Part No.:
- MCQ1823GQTE-330BALAEC-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Current Sensors
- Package:
- 12-PowerWFQFN
- Datasheet:
-
MCQ1823GQTE-330BALAEC-Z.pdf
- Description:
- AUTOMOTIVE-GRADE, LINEAR HALL-EF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCQ1823GQTE-330BALAEC-Z from Monolithic Power Systems is an automotive-grade, linear Hall-effect current sensor IC with integrated over-current detection (OCD), designed for bidirectional DC/AC current sensing up to ±30A in space-constrained systems. It features 44 mV/A sensitivity, 0.6 mΩ internal conductor resistance, ±2.5% total output error over temperature, and operates from a 3.3V supply. Its differential Hall array rejects stray magnetic fields, enabling accurate measurement in noisy motor control or power supply environments.
For engineers reviewing the MCQ1823GQTE-330BALAEC-Z datasheet, MCQ1823GQTE-330BALAEC-Z pinout, MCQ1823GQTE-330BALAEC-Z application, or MCQ1823GQTE-330BALAEC-Z equivalent, this page delivers verified technical context, AEC-Q100 Grade 1 qualification details, TQFN-12 package layout, OCD threshold configuration guidance, and real-world use cases in automotive load management and switch-mode power supplies.
Technical Context
The MCQ1823GQTE-330BALAEC-Z implements a differential Hall-sensing architecture with two integrated transducers measuring magnetic field gradients across a low-resistance (0.6 mΩ) primary conductor-enabling immunity to homogeneous and gradient external magnetic interference. Its spinning current technique minimizes offset drift, achieving ±10 mV zero-current output voltage error over -40°C to +125°C.
It integrates a fast open-drain /OCD output with 1 µs response time and user-configurable threshold (via external pull-up resistor) ranging from 50% to 240% of IPMAX (±30A). The device supports ratiometric or absolute VOUT modes and delivers 120 kHz bandwidth with 4 µs total response time from current step to analog output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3V ±0.3V - fixed single-supply operation with 2.5V UVLO threshold ensures reliable startup in automotive 12V rail-derived systems. |
| Current Range | ±30A bidirectional - enables full-scale sensing of high-power motor phase currents or battery charge/discharge paths. |
| Sensitivity | 44 mV/A - provides 1.32V full-scale analog output swing at ±30A, compatible with standard 3.3V ADC inputs without gain staging. |
| Total Output Error | ±2.5% - includes linearity, offset, and sensitivity error over -40°C to +125°C, meeting ASIL-B–relevant accuracy requirements. |
| OCD Response Time | 1 µs - allows sub-microsecond fault detection for IGBT/MOSFET short-circuit protection in inverters and DC-DC controllers. |
| Bandwidth | 120 kHz - supports accurate current waveform capture for PWM-based motor control up to 20 kHz switching frequencies. |
| Conductor Resistance | 0.6 mΩ - limits power loss to <1.8W at 30A, reducing thermal impact on PCB and eliminating need for external shunt cooling. |
Pinout & Package
The MCQ1823GQTE-330BALAEC-Z is housed in a 3mm × 3mm TQFN-12 package with exposed thermal pad (pin 0), optimized for high-current density layouts and automated optical inspection. Pin 1 is marked by a dot; pins are numbered counter-clockwise from top-left corner in top view.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | IP+ | Positive primary current terminal - fused internal connection to conductor; carries full sensed current into device. |
| 3, 4 | IP- | Negative primary current terminal - fused return path; completes current loop through integrated conductor. |
| 5 | GND | Signal ground reference - must be connected to low-impedance system ground plane to maintain offset stability. |
| 6 | /OCD | Open-drain over-current flag - sinks current when IP exceeds configured threshold; requires external pull-up to VCC. |
| 7–10 | NC | No connect - electrically isolated; must remain unconnected per datasheet to avoid parasitic coupling or latch-up. |
| 11 | VOUT | Analog output - ratiometric (1.65V at 0A, ±1.32V full scale) or absolute mode; drives 4.7kΩ load with ≤4.7nF capacitance. |
| 12 | VCC | 3.3V supply input - requires 0.1µF–1µF ceramic bypass capacitor to GND placed within 2mm of pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall sensing | Rejects external magnetic interference up to gradient fields - eliminates need for magnetic shielding in crowded ECU or inverter modules. |
| AEC-Q100 Grade 1 qualification | Validated for -40°C to +125°C operation - meets automotive engine bay and powertrain environmental requirements without derating. |
| Configurable OCD threshold | 50%–240% of ±30A via RPULLUP (10kΩ–500kΩ) - enables flexible fault margin tuning across battery protection, motor stall, and short-circuit scenarios. |
| Factory-trimmed accuracy | ±2.5% total error including lifetime drift - reduces calibration overhead in production test and eliminates post-manufacture trimming steps. |
| Ultra-small footprint | 3mm × 3mm TQFN-12 - saves >60% board area vs. legacy SOIC-8 current sensors, enabling placement directly on high-current traces. |
Applications
| Motor Control | Audio Driver Current Control |
|---|---|
|
Use Scenario: Real-time phase current monitoring in 3-phase BLDC motor inverters for field-oriented control (FOC). IC Role / Device Role / Timing Role: Bidirectional current sensor providing isolated analog feedback to MCU ADC with 120 kHz bandwidth and <4 µs latency. Use Value: Enables precise torque regulation and dynamic braking while rejecting EMI from adjacent power switches and bus transients. |
Use Scenario: Monitoring speaker coil current in Class-D audio amplifiers to prevent thermal damage during clipping events. IC Role / Device Role / Timing Role: High-speed current monitor feeding OCD signal to amplifier shutdown logic and VOUT to DSP for real-time limiter algorithms. Use Value: Delivers 1 µs fault detection to disable output stage before voice coil overheating, extending speaker lifespan under overload. |
| Automotive Systems | Switch-Mode Power Supplies |
|
Use Scenario: Battery pack current sensing in 12V/48V mild-hybrid architectures for state-of-charge estimation and fuseless over-current protection. IC Role / Device Role / Timing Role: AEC-Q100 qualified current sensor interfacing with battery management system (BMS) controller via analog output and /OCD interrupt. Use Value: Provides galvanic isolation-equivalent safety (100 VPK working voltage) without optocouplers or isolated amplifiers, reducing BOM cost and complexity. |
Use Scenario: Primary-side current sensing in synchronous buck converters for server VRMs and telecom POL modules. IC Role / Device Role / Timing Role: High-bandwidth current feedback element supporting peak-current-mode control with minimal propagation delay (<2 µs). Use Value: Improves transient response and cycle-by-cycle current limiting accuracy, enabling tighter output voltage regulation under dynamic load steps. |
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 | 30A bidirectional, 66 mV/A, 5V supply, SOIC-8 package (5.9mm × 4.9mm), no configurable OCD. | Larger footprint; lacks user-adjustable over-current threshold - requires external comparator for custom trip points. | Choose if 5V supply is mandatory and board space permits larger package; avoid when OCD flexibility or 3.3V compatibility is required. |
| TLE4971-25S4-10-1-5-SP | 25A bidirectional, 40 mV/A, 5V supply, PG-DSO-16 package, integrated digital SPI interface and diagnostics. | Digital output only; no analog VOUT - incompatible with existing ADC-based control loops without redesign. | Prefer for new designs needing diagnostic reporting and functional safety (ASIL-B) compliance; not drop-in for analog feedback systems. |
Compared with ACS724LLCTR-30AB-T and TLE4971-25S4-10-1-5-SP, the MCQ1823GQTE-330BALAEC-Z uniquely combines 3.3V operation, ultra-compact TQFN-12 packaging, analog + OCD dual outputs, and field-configurable fault thresholds - making it optimal for cost-sensitive, space-constrained automotive and industrial power stages requiring both precision sensing and rapid hardware-level protection.
Availability
MCQ1823GQTE-330BALAEC-Z is available at Aetrix Electronics and suitable for motor control, automotive battery management, and switch-mode power supply designs requiring stable component supply, AEC-Q100 qualification, and high-accuracy current feedback under thermal stress.
Supply support for MCQ1823GQTE-330BALAEC-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, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MCQ1823 product line targets automotive and industrial current sensing applications where miniaturization, magnetic immunity, and integrated fault detection are critical - delivering Hall-effect solutions that replace bulky shunts and isolated amplifiers in next-generation power systems.
FAQ
What is the maximum continuous current the MCQ1823GQTE-330BALAEC-Z can measure?
The device is rated for ±30A bidirectional current sensing with guaranteed accuracy and thermal performance. Its 0.6 mΩ internal conductor produces only 0.54W of power dissipation at ±30A, enabling sustained operation without forced air cooling in typical automotive PCB layouts with 2oz copper and thermal vias.
How is the over-current detection threshold set on this part?
The /OCD threshold is configured by connecting an external pull-up resistor (10kΩ–500kΩ) between /OCD and VCC. Threshold scales linearly from 50% to 240% of ±30A depending on resistor value - e.g., 100kΩ yields ~100% IPMAX (±30A), while 20kΩ sets ~200% (±60A), per datasheet Figure 12.
Does the MCQ1823GQTE-330BALAEC-Z require external calibration?
No. The device is factory-trimmed for sensitivity, offset, and linearity across temperature. Total output error remains within ±2.5% over -40°C to +125°C without user calibration, and lifetime drift is limited to ±1% for both sensitivity and total error - validated per AEC-Q100 stress testing.
Can the MCQ1823GQTE-330BALAEC-Z operate from a 5V supply?
No. The "3" in the part number suffix (MCQ1823GQTE-330BALAEC-Z) denotes 3.3V supply option. For 5V operation, select variants like MCQ1823GQTE-530BRNAEC-Z (±30A, 66 mV/A, 5V supply). Mixing supply voltages risks exceeding absolute maximum ratings and invalidates AEC-Q100 qualification.
What is the isolation rating of the MCQ1823GQTE-330BALAEC-Z?
It provides basic isolation per IEC 62368-1 with a maximum working voltage (VIOWM) of 100 VPK or 100 VDC between primary current path (IP+/IP-) and secondary circuitry (VCC/VOUT/GND). This supports safe operation in 48V automotive systems and industrial 24V/48V rails without additional isolation barriers.
Is the VOUT output ratiometric or absolute by default?
The output mode is determined by factory configuration - "B" in the part number (MCQ1823GQTE-330BALAEC-Z) indicates bidirectional operation with ratiometric VOUT (VOUT = VCC/2 at 0A). Absolute mode variants use "A" suffix and deliver fixed 1.65V zero-current output independent of VCC variation.
How does the differential Hall array improve measurement accuracy?
The dual Hall transducers sense magnetic field differences across the conductor, canceling common-mode interference from nearby motors, solenoids, or busbars. This eliminates the need for magnetic shielding and maintains ±0.5% nonlinearity even in environments with >100 Oe external gradient fields - verified in MPS application note AN-127.
MCQ1823GQTE-330BALAEC-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:
- Analog 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-330BALAEC-Z FAQ
1.How can I place an order for MCQ1823GQTE-330BALAEC-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MCQ1823GQTE-330BALAEC-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-330BALAEC-Z reliable?
The price and inventory of MCQ1823GQTE-330BALAEC-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-330BALAEC-Z is usually 5 days.
3.What payment methods are accepted for MCQ1823GQTE-330BALAEC-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCQ1823GQTE-330BALAEC-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCQ1823GQTE-330BALAEC-Z?
MCQ1823GQTE-330BALAEC-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCQ1823GQTE-330BALAEC-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-330BALAEC-Z?
For technical support, including MCQ1823GQTE-330BALAEC-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCQ1823GQTE-330BALAEC-Z requirements.
6.How does Aetrix verify that MCQ1823GQTE-330BALAEC-Z is sourced from the original manufacturer or authorized distributors?
All MCQ1823GQTE-330BALAEC-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-330BALAEC-Z meets industry standards.
7.What is the process for return or replacement of MCQ1823GQTE-330BALAEC-Z?
All MCQ1823GQTE-330BALAEC-Z units undergo pre-shipment inspection (PSI). If there is an issue with MCQ1823GQTE-330BALAEC-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-330BALAEC-Z part is unused and in its original packaging.
Return procedure for MCQ1823GQTE-330BALAEC-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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