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Monolithic Power Systems Inc. MCQ1823GQTE-520BRNAEC-P
- Part No.:
- MCQ1823GQTE-520BRNAEC-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Current Sensors
- Package:
- 12-PowerWFQFN
- Datasheet:
-
MCQ1823GQTE-520BRNAEC-P.pdf
- Description:
- AUTOMOTIVE-GRADE, LINEAR HALL-EF
- Quantity:
- Payment:
- Shipping:
Inventory:1,132
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Product details
Overview
MCQ1823GQTE-520BRNAEC 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 ±20A. It features a 0.6mΩ internal conductor, 100mV/A sensitivity at 5V supply, ±2.5% total output error, and 120kHz bandwidth. Used in motor control and automotive power systems where space-constrained, high-accuracy isolation is required.
For engineers reviewing the MCQ1823GQTE-520BRNAEC datasheet, MCQ1823GQTE-520BRNAEC pinout, MCQ1823GQTE-520BRNAEC application, or MCQ1823GQTE-520BRNAEC equivalent, this page delivers verified technical context, AEC-Q100 Grade 1 qualification details, OCD threshold configuration (±20A), ratiometric/absolute output options, and TQFN-12 package integration guidance.
Technical Context
The MCQ1823GQTE-520BRNAEC employs a differential Hall array to reject homogeneous and gradient stray magnetic fields, enabling stable operation in noisy automotive environments. Its spinning current technique minimizes offset drift, while the integrated fast OCD circuit triggers within 1µs when primary current exceeds ±20A.
It operates from a single 5V supply (4.5–5.5V), draws 9–12mA quiescent current, and delivers analog VOUT proportional to sensed current with ratiometric or absolute scaling. The device achieves basic isolation per IEC62368-1 (VIOWM = 100VPK/DC) without external galvanic barriers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 5V nominal (4.5–5.5V range); supports direct connection to standard automotive 5V rails. |
| Current Range | ±20A bidirectional; enables full-scale sensing of battery, motor, or load currents in EV subsystems. |
| Sensitivity | 100mV/A at TJ = 25°C; yields 2.0V full-scale output swing for ±20A, compatible with 3.3V ADC inputs. |
| Total Output Error | ±2.5% over -40°C to +125°C; ensures calibrated accuracy across automotive temperature extremes. |
| OCD Response Time | 1µs; provides sub-microsecond fault detection for IGBT/MOSFET short-circuit protection. |
| Bandwidth | 120kHz; supports real-time current monitoring in PWM-driven motor and SMPS applications. |
| Conductor Resistance | 0.6mΩ; limits power loss to <240mW at 20A, reducing thermal impact on PCB layout. |
Pinout & Package
TQFN-12 (3mm × 3mm, 0.5mm pitch) with exposed thermal pad; AEC-Q100 qualified for under-hood automotive use.
| 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 power rail. |
| 3, 4 IP- | Primary current input (-) | Fused low-side terminal; completes current loop with IP+, forming integrated shunt path. |
| 5 GND | Signal ground reference | Common return for analog output and OCD logic; must be star-connected to minimize noise coupling. |
| 6 /OCD | Open-drain over-current flag | Active-low output; requires external pull-up (10–500kΩ) to VCC to set custom OCD threshold. |
| 7–10 NC | No connect | Unbonded die pads; must remain floating-no routing or soldering permitted. |
| 11 VOUT | Analog current-proportional output | Voltage output (0.5V–4.5V for ±20A, 5V supply, absolute mode); drives 4.7kΩ min load. |
| 12 VCC | Power supply input | 5V supply pin; requires 0.1–1µF bypass capacitor to GND placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall sensing | Rejects external magnetic interference (e.g., nearby inductors or motors), eliminating need for shielding. |
| Factory-trimmed accuracy | ±2.5% total error over temperature eliminates system-level calibration in production. |
| Configurable OCD threshold | Set via external pull-up resistor (10–500kΩ) to support 50–240% of IPMAX without firmware changes. |
| Ultra-small footprint | 3mm × 3mm TQFN-12 saves >60% board area vs. through-hole current sensors, enabling dense power modules. |
| AEC-Q100 Grade 1 | Qualified for -40°C to +125°C junction operation-meets requirements for engine control, ADAS, and traction inverters. |
Applications
| Motor Control | Audio Driver Current Control |
|---|---|
|
Use Scenario: Real-time phase current monitoring in 3-phase BLDC motor drivers for electric power steering (EPS). IC Role / Device Role / Timing Role: Primary current sensor providing isolated, low-latency feedback to MCU PWM controllers. Use Value: 120kHz bandwidth and 1µs OCD response enable precise commutation timing and immediate fault shutdown during winding shorts. |
Use Scenario: Monitoring speaker coil current in Class-D automotive audio amplifiers to prevent thermal damage. IC Role / Device Role / Timing Role: Analog current transducer feeding protection logic and dynamic gain adjustment circuits. Use Value: ±2.5% accuracy and ratiometric output ensure consistent clipping detection across varying supply voltages and temperatures. |
| Automotive Systems | Over-Current Fault Protection |
|
Use Scenario: Battery management system (BMS) cell balancing and pack-level current measurement in 12V/48V hybrid architectures. IC Role / Device Role / Timing Role: High-side current monitor interfacing with isolated CAN or SENT communication interfaces. Use Value: 0.6mΩ conductor resistance minimizes insertion loss (<240mW @20A), preserving system efficiency and thermal margin. |
Use Scenario: Fast-acting over-current protection for DC-DC converters in ADAS camera modules and radar units. IC Role / Device Role / Timing Role: Standalone fault detector triggering external e-fuse or gate driver disable signals. Use Value: Sub-1µs OCD propagation delay allows protection before MOSFET avalanche failure, improving system reliability. |
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-20AB-T | 20A bidirectional, 100mV/A, SOIC-8 package (5.9mm × 4.9mm), no configurable OCD. | Lacks programmable OCD; requires external comparator for over-current response. | Select if board space permits larger SOIC and OCD logic is already implemented externally. |
| TLE4972-2000-4-SP | 20A bidirectional, 100mV/A, PG-DSO-16 package, integrated digital SPI interface and diagnostics. | Includes built-in CRC, temperature reporting, and fault registers-adds MCU overhead but improves functional safety compliance. | Select for ASIL-B designs requiring diagnostic coverage and digital bus integration over analog simplicity. |
Compared with ACS724LLCTR-20AB-T and TLE4972-2000-4-SP, the MCQ1823GQTE-520BRNAEC offers the smallest footprint (3×3mm), fastest OCD response (1µs), and simplest analog interface-ideal for cost-sensitive, space-constrained automotive subsystems where minimal BOM count and rapid fault reaction are critical.
Availability
MCQ1823GQTE-520BRNAEC is available at Aetrix Electronics and suitable for motor control, automotive power distribution, and over-current fault protection requiring stable component supply across extended temperature ranges and AEC-Q100-compliant manufacturing.
Supply support for MCQ1823GQTE-520BRNAEC 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 markets.
The MCQ1823 product line targets compact, high-accuracy current sensing in automotive electrification systems-designed specifically to replace bulky shunts and optocoupled solutions with integrated, AEC-Q100-qualified Hall-effect devices.
FAQ
What is the maximum continuous current the MCQ1823GQTE-520BRNAEC can measure?
The device is rated for ±20A bidirectional continuous current. Its 0.6mΩ internal conductor sustains this level with ≤240mW power dissipation at 20A, and thermal design must ensure junction temperature remains ≤125°C under worst-case ambient and airflow conditions.
How is the over-current detection threshold configured?
The /OCD pin is open-drain and requires an external pull-up resistor (10kΩ–500kΩ) to VCC. Threshold scales linearly with resistance: lower values yield higher thresholds (e.g., 10kΩ ≈ 240% IPMAX), higher values yield lower thresholds (e.g., 500kΩ ≈ 50% IPMAX). No programming or digital interface is needed.
Does the MCQ1823GQTE-520BRNAEC require external calibration?
No. It is factory-trimmed for sensitivity, offset, and linearity. Total output error remains within ±2.5% across -40°C to +125°C without user calibration-enabling drop-in deployment in production systems meeting AEC-Q100 requirements.
Can the output be used with a 3.3V ADC?
Yes. In absolute mode with 5V supply, VOUT spans 0.5V to 4.5V for ±20A-fully compatible with 3.3V ADCs using appropriate scaling. Ratiometric mode outputs 0.1×VCC to 0.9×VCC, maintaining proportionality even with supply variation.
Is the TQFN-12 package lead-free and RoHS-compliant?
Yes. The MCQ1823GQTE-520BRNAEC is lead-free, halogen-free, and fully compliant with the EU RoHS directive. MPS confirms green status per its Quality Assurance documentation, with MSL Level 1 moisture sensitivity rating.
What isolation rating does this device provide?
It meets basic insulation per IEC62368-1 with a maximum working voltage (VIOWM) of 100VPK or 100VDC. This qualifies it for reinforced isolation in secondary-side current sensing but does not replace certified galvanic isolators for primary-side safety-critical applications.
How does the differential Hall architecture improve noise immunity?
By measuring magnetic field difference between two spatially separated Hall plates, common-mode gradients (e.g., from adjacent power inductors or cables) cancel out. This eliminates need for magnetic shielding and maintains accuracy in magnetically dense automotive ECUs.
MCQ1823GQTE-520BRNAEC-P 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:
- 100mV/A
- Frequency:
- 120kHz
- Linearity:
- ±0.5%
- Accuracy:
- ±2.5%
- Voltage - Supply:
- 4.5V ~ 5.5V
- 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-520BRNAEC-P FAQ
1.How can I place an order for MCQ1823GQTE-520BRNAEC-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MCQ1823GQTE-520BRNAEC-P 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-520BRNAEC-P reliable?
The price and inventory of MCQ1823GQTE-520BRNAEC-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCQ1823GQTE-520BRNAEC-P is usually 5 days.
3.What payment methods are accepted for MCQ1823GQTE-520BRNAEC-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCQ1823GQTE-520BRNAEC-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCQ1823GQTE-520BRNAEC-P?
MCQ1823GQTE-520BRNAEC-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCQ1823GQTE-520BRNAEC-P 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-520BRNAEC-P?
For technical support, including MCQ1823GQTE-520BRNAEC-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCQ1823GQTE-520BRNAEC-P requirements.
6.How does Aetrix verify that MCQ1823GQTE-520BRNAEC-P is sourced from the original manufacturer or authorized distributors?
All MCQ1823GQTE-520BRNAEC-P 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-520BRNAEC-P meets industry standards.
7.What is the process for return or replacement of MCQ1823GQTE-520BRNAEC-P?
All MCQ1823GQTE-520BRNAEC-P units undergo pre-shipment inspection (PSI). If there is an issue with MCQ1823GQTE-520BRNAEC-P, 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-520BRNAEC-P part is unused and in its original packaging.
Return procedure for MCQ1823GQTE-520BRNAEC-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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