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Monolithic Power Systems Inc. MCQ1823GQTE-320BRNAEC-Z
- Part No.:
- MCQ1823GQTE-320BRNAEC-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Current Sensors
- Package:
- 12-PowerWFQFN
- Datasheet:
-
MCQ1823GQTE-320BRNAEC-Z.pdf
- Description:
- AUTOMOTIVE-GRADE, LINEAR HALL-EF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MCQ1823GQTE-320BRNAEC-Z from Monolithic Power Systems is an automotive-grade, 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 ±20A rated current range, 66 mV/A sensitivity, 0.6 mΩ internal conductor resistance, and AEC-Q100 Grade 1 qualification for use in motor control and automotive powertrain subsystems.
For engineers reviewing the MCQ1823GQTE-320BRNAEC-Z datasheet, MCQ1823GQTE-320BRNAEC-Z pinout, MCQ1823GQTE-320BRNAEC-Z application, or MCQ1823GQTE-320BRNAEC-Z equivalent, this device delivers ratiometric analog output, 120 kHz bandwidth, 1 µs OCD response time, and immunity to external gradient magnetic fields-critical for reliable operation in noisy automotive environments.
Technical Context
The MCQ1823GQTE-320BRNAEC-Z employs a differential Hall array to reject homogeneous and gradient stray magnetic fields, enabling stable measurement in magnetically noisy layouts. Its integrated 0.6 mΩ primary conductor supports high-current flow while minimizing thermal rise and PCB trace losses.
It operates from a 3.3 V supply, delivers ±20 A bidirectional sensing capability, and provides fast OCD via open-drain /OCD output with user-configurable threshold (100% of IPMAX by default). The spinning current technique ensures low offset drift across temperature and lifetime.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 3.3 V (3.0–3.6 V operating range); enables direct compatibility with common automotive microcontroller I/O rails. |
| Current Range | ±20 A bidirectional; supports full-scale sensing of battery, motor phase, or DC-link currents without external shunt scaling. |
| Sensitivity | 66 mV/A at TJ = 25°C; yields 1.32 V full-scale output swing for ±20 A, simplifying ADC interface design. |
| Total Output Error | ±2.5% over -40°C to +125°C; ensures consistent accuracy across automotive ambient and junction temperature extremes. |
| OCD Response Time | 1 µs; enables real-time fault shutdown in motor drives and power converters before destructive energy accumulation. |
| Bandwidth | 120 kHz; captures fast transient currents including PWM ripple and switching noise in SiC/GaN-based inverters. |
| Conductor Resistance | 0.6 mΩ; limits power loss to <120 mW at 20 A, reducing thermal impact on adjacent components and PCB layers. |
Pinout & Package
TQFN-12 (3 mm × 3 mm, 0.5 mm pitch) package with wettable flanks; AEC-Q100 qualified, RoHS-compliant, and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IP+ | Primary current input (+) | Fused positive terminal for main current path; connects directly to high-side or mid-point of power rail. |
| 3, 4 IP- | Primary current input (-) | Fused negative terminal; completes current loop through internal conductor with minimal parasitic inductance. |
| 5 GND | Signal ground reference | Low-impedance return for Hall sensor bias and analog output; must be connected to clean system ground plane. |
| 6 /OCD | Over-current detection output | Open-drain active-low flag; requires external pull-up (10–500 kΩ) to VCC for custom OCD threshold configuration. |
| 7–10 NC | No connection | Internally unconnected; must remain floating or tied to GND per layout best practices to avoid coupling. |
| 11 VOUT | Analog output voltage | Ratiometric output proportional to sensed current; referenced to VCC and GND; drives standard 4.7 kΩ load. |
| 12 VCC | Supply input | 3.3 V power input with UVLO (2.5 V typical); requires 0.1–1 µF bypass capacitor to GND for noise suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall sensing | Rejects external gradient magnetic fields-enables accurate current measurement near motors, transformers, or busbars. |
| Factory-trimmed accuracy | ±2.5% total output error over full temperature and current range-eliminates need for system-level calibration. |
| Fast OCD with 1 µs response | Enables hardware-level fault isolation before MOSFET short-circuit failure or thermal runaway occurs. |
| Ultra-small TQFN-12 footprint | 3 mm × 3 mm area saves >60% board space vs. legacy SOIC-8 current sensors-ideal for ECU and OBC modules. |
| Ratiometric output mode | VOUT scales with VCC variation-preserves measurement integrity when supply rails fluctuate under load transients. |
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: Primary current sensing element providing isolated, low-latency feedback to MCU ADC with 120 kHz bandwidth. Use Value: Enables precise torque regulation and stall detection at ±20 A without external shunt resistor or isolation amplifier. |
Use Scenario: Monitoring speaker coil current in Class-D audio amplifiers to prevent thermal damage and clipping distortion. IC Role / Device Role / Timing Role: Analog current feedback sensor interfaced to amplifier's protection logic with sub-microsecond OCD response. Use Value: Delivers fast over-current shutdown (<1 µs) while maintaining signal fidelity up to 20 kHz audio bandwidth. |
| Automotive Systems | Switch-Mode Power Supplies |
Use Scenario: Battery current monitoring in 12 V/48 V dual-battery architectures for state-of-charge estimation and fuseless protection. IC Role / Device Role / Timing Role: Bidirectional current sensor in high-side configuration, supporting regenerative braking and charging current measurement. Use Value: AEC-Q100 Grade 1 qualification ensures reliability at 125°C junction temperature in engine bay and under-hood locations. |
Use Scenario: Output current sensing in synchronous buck converters for server VRMs and automotive DC-DC modules. IC Role / Device Role / Timing Role: High-bandwidth current monitor feeding into current-mode control loop and cycle-by-cycle peak current limiting. Use Value: 120 kHz bandwidth and 66 mV/A sensitivity enable accurate current-loop stability without phase lag compensation. |
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 |
|---|---|---|---|
| ACS724LLCB-20AU-T | SOIC-8 package (5.9 mm × 4.9 mm); ±20 A range; 100 mV/A sensitivity; no integrated OCD output. | Lacks dedicated /OCD pin-requires external comparator circuit for over-current protection. | Select if board space allows larger package and OCD is implemented externally via MCU GPIO or discrete comparator. |
| TLE4972-2000-4-10-000 | PG-DSO-16 package; ±20 A range; 100 mV/A; includes digital SPI output and configurable OCD thresholds. | Offers digital interface and diagnostics but higher cost and complexity than analog-only MCQ1823. | Select when system requires diagnostic reporting, EEPROM-trimmed offsets, or integration with CAN-based vehicle networks. |
Compared with ACS724LLCB-20AU-T and TLE4972-2000-4-10-000, the MCQ1823GQTE-320BRNAEC-Z provides superior board-area efficiency, integrated OCD with 1 µs response, and lower thermal resistance due to its ultra-small TQFN-12 package-making it optimal for compact, high-reliability automotive power modules.
Availability
MCQ1823GQTE-320BRNAEC-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 compliance, and high-accuracy current sensing in thermally demanding environments.
Supply support for MCQ1823GQTE-320BRNAEC-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 for automotive, industrial, and computing applications.
The MCQ1823 product line delivers integrated Hall-effect current sensors optimized for AEC-Q100-compliant automotive subsystems where size, accuracy, and magnetic immunity are critical-targeting electric power steering, onboard chargers, and traction inverter auxiliary monitoring.
FAQ
What is the maximum continuous current the MCQ1823GQTE-320BRNAEC-Z can measure?
The device is rated for ±20 A continuous bidirectional current sensing. Its 0.6 mΩ internal conductor sustains this current with <120 mW power dissipation at 20 A, and thermal performance remains within AEC-Q100 Grade 1 limits (TJ ≤ +125°C) under typical PCB copper pour conditions.
Does the MCQ1823GQTE-320BRNAEC-Z require external calibration?
No. It is factory-trimmed for sensitivity, offset, and linearity, delivering ±2.5% total output error over -40°C to +125°C without system-level calibration. The spinning current technique and differential Hall architecture ensure long-term offset stability, with ±1% lifetime drift specified.
How is the over-current detection threshold set on this part?
The /OCD pin is open-drain and configured via external pull-up resistor to VCC. For MCQ1823GQTE-320BRNAEC-Z, the default OCD threshold is ±100% of IPMAX (±20 A). Custom thresholds between 50% and 240% are achieved by selecting RPULLUP between 10 kΩ and 500 kΩ, per the datasheet's OCD configuration table.
Can the MCQ1823GQTE-320BRNAEC-Z be used in unidirectional current sensing applications?
Yes. Though the part number suffix "B" indicates bidirectional capability, the device supports unidirectional operation by grounding the negative current path or using only the positive half-scale range. Zero-current output is 1.65 V (ratiometric) or 0.33 V (absolute) at 3.3 V supply, allowing flexible signal conditioning.
Is isolation provided between primary current path and signal outputs?
The device provides basic galvanic isolation per IEC 62368-1, with VIOWM = 100 VPK or VDC. This isolation is sufficient for functional safety in non-safety-critical automotive subsystems (e.g., HVAC blowers, seat controls), but not for reinforced isolation required in high-voltage traction inverters.
What PCB layout considerations improve magnetic immunity?
Place the sensor away from strong magnetic sources (e.g., inductors, transformers) and orient the IP+ and IP- traces orthogonally to nearby current-carrying conductors. Use symmetric, low-inductance copper pours for IP+ and IP- pads, and maintain ≥3 mm clearance from other high-current paths to minimize coupling into the differential Hall array.
Does the MCQ1823GQTE-320BRNAEC-Z support both 3.3 V and 5 V supplies?
No. The "3" in the part number (MCQ1823GQTE-320BRNAEC-Z) specifies 3.3 V supply operation only. For 5 V supply variants, refer to part numbers beginning with "MCQ1823GQTE-5xx…", such as MCQ1823GQTE-520BRNAEC-Z (±20 A, 5 V supply, 100 mV/A).
MCQ1823GQTE-320BRNAEC-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:
- 20A
- Number of Channels:
- 1
- Output:
- Ratiometric, Voltage
- Sensitivity:
- 66mV/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-320BRNAEC-Z FAQ
1.How can I place an order for MCQ1823GQTE-320BRNAEC-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MCQ1823GQTE-320BRNAEC-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-320BRNAEC-Z reliable?
The price and inventory of MCQ1823GQTE-320BRNAEC-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-320BRNAEC-Z is usually 5 days.
3.What payment methods are accepted for MCQ1823GQTE-320BRNAEC-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCQ1823GQTE-320BRNAEC-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCQ1823GQTE-320BRNAEC-Z?
MCQ1823GQTE-320BRNAEC-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCQ1823GQTE-320BRNAEC-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-320BRNAEC-Z?
For technical support, including MCQ1823GQTE-320BRNAEC-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCQ1823GQTE-320BRNAEC-Z requirements.
6.How does Aetrix verify that MCQ1823GQTE-320BRNAEC-Z is sourced from the original manufacturer or authorized distributors?
All MCQ1823GQTE-320BRNAEC-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-320BRNAEC-Z meets industry standards.
7.What is the process for return or replacement of MCQ1823GQTE-320BRNAEC-Z?
All MCQ1823GQTE-320BRNAEC-Z units undergo pre-shipment inspection (PSI). If there is an issue with MCQ1823GQTE-320BRNAEC-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-320BRNAEC-Z part is unused and in its original packaging.
Return procedure for MCQ1823GQTE-320BRNAEC-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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