My Inquiry
My Account
Monolithic Power Systems Inc. MCS1823GQTE-520BRN-Z
- Part No.:
- MCS1823GQTE-520BRN-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Category:
- Current Sensors
- Package:
- 12-PowerWFQFN
- Datasheet:
-
MCS1823GQTE-520BRN-Z.pdf
- Description:
- ULTRA-SMALL PACKAGE, LINEAR HALL
- Quantity:
- Payment:
- Shipping:
Inventory:3,230
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MCS1823GQTE-520BRN-Z 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 power paths. It features ±20A rated current range, 100 mV/A sensitivity at 5V supply, 0.6mΩ internal conductor resistance, ±2.5% total output error, and 120kHz bandwidth - enabling precise real-time monitoring in motor control and SMPS feedback loops.
For engineers reviewing the MCS1823GQTE-520BRN-Z datasheet, MCS1823GQTE-520BRN-Z pinout, MCS1823GQTE-520BRN-Z application, or MCS1823GQTE-520BRN-Z equivalent, this device delivers ratiometric or absolute analog output, factory-trimmed offset stability, differential Hall architecture for stray-field immunity, and sub-1µs OCD response - critical for fast-fault protection in space-constrained industrial and automotive systems.
Technical Context
The MCS1823GQTE-520BRN-Z employs a differential Hall array with spinning current offset cancellation to reject external magnetic gradients and achieve ±2.5% total accuracy across –40°C to +125°C. Its integrated 0.6mΩ copper primary conductor enables low-loss, high-current sensing without external shunts.
It integrates a dedicated open-drain /OCD output with user-configurable threshold (via external pull-up resistor) and 1µs response time, while the analog VOUT provides linear, temperature-stable voltage proportional to primary current - supporting both ratiometric (VCC-referenced) and absolute (fixed 2.5V zero-current) output modes per configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 5V nominal (4.5–5.5V operating range); enables direct compatibility with standard logic rails and reduces need for LDO regulation. |
| Current Range | ±20A bidirectional; supports full-scale measurement of reversible motor phase currents or bidirectional battery charge/discharge paths. |
| Sensitivity | 100 mV/A typical; yields 2.0V full-scale output swing (±20A × 100 mV/A), simplifying ADC interface design with 12-bit+ resolution. |
| Total Output Error | ±2.5% over temperature; ensures calibrated current measurement accuracy without system-level recalibration across industrial ambient conditions. |
| Bandwidth | 120kHz; captures fast transients in switch-mode power supplies and PWM-driven motor controllers without phase lag. |
| OCD Response Time | 1µs; enables cycle-by-cycle over-current shutdown in high-frequency converters and IGBT gate drivers. |
| Conductor Resistance | 0.6mΩ; limits power loss to <120mW at 20A, eliminating thermal derating concerns in compact PCB layouts. |
Pinout & Package
Package: TQFN-12 (3mm × 3mm, 0.5mm pitch, exposed thermal pad). Ultra-small footprint reduces board area by >50% vs. legacy SOIC-8 current sensors while maintaining isolation and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 IP+ | Primary current input (+) | Fused internal copper path; carries up to ±20A; connects directly to high-side power rail or motor phase leg. |
| 3, 4 IP- | Primary current return (–) | Fused internal copper path; completes current loop; enables Kelvin-sense geometry for minimal thermal EMF impact. |
| 5 GND | Signal ground reference | Separate from power ground; must be connected to low-noise analog ground plane to preserve offset stability. |
| 6 /OCD | Open-drain over-current flag | Active-low, 1µs response; requires external 10kΩ–500kΩ pull-up to VCC to set OCD threshold between 50%–240% of IPMAX. |
| 7–10 NC | No connection | Internally unconnected; must remain floating - no routing or soldering permitted to avoid parasitic coupling. |
| 11 VOUT | Analog current-proportional output | Ratiometric (VCC/2 at zero current) or absolute (2.5V at zero current); drives 4.7kΩ load with ≤4.7nF capacitance. |
| 12 VCC | Power supply input | 5V supply pin; requires 0.1µF–1µF ceramic bypass capacitor to GND placed within 2mm for stable operation. |
Key Features
| Feature | Design Value |
|---|---|
| Differential Hall sensing | Rejects uniform and gradient external magnetic fields - eliminates need for magnetic shielding in noisy motor or inverter environments. |
| Factory-trimmed offset & sensitivity | Eliminates production calibration; achieves ±2.5% total error without end-of-line trimming, reducing test time and cost. |
| Spinning current offset cancellation | Reduces thermal drift and 1/f noise; maintains <±15mV offset variation over –40°C to +125°C junction temperature. |
| Integrated OCD with programmable threshold | Enables single-chip fault detection without external comparators; threshold adjustable via resistor - supports adaptive protection schemes. |
| TQFN-12 thermal performance | Exposed pad allows direct thermal connection to PCB copper; achieves θJA ≈ 65°C/W, enabling continuous 20A operation at 70°C ambient. |
Applications
| Motor Control | Audio Driver Current Control |
|---|---|
Use Scenario: Real-time phase current sampling in 3-phase BLDC motor inverters for field-oriented control (FOC). IC Role / Device Role / Timing Role: Primary current sensor on low-side shunt replacement; provides isolated, high-bandwidth analog feedback to MCU ADC. Use Value: 120kHz bandwidth and ±2.5% accuracy enable precise torque ripple suppression and efficient commutation timing. |
Use Scenario: Monitoring output stage current in Class-D audio amplifiers to prevent clipping-induced thermal failure. IC Role / Device Role / Timing Role: Bidirectional current monitor on speaker output path; feeds real-time data to protection logic and dynamic headroom management. Use Value: 1µs OCD response triggers immediate mute before voice coil damage occurs; 0.6mΩ resistance avoids signal attenuation. |
| Switch-Mode Power Supplies | Over-Current Fault Protection |
Use Scenario: Secondary-side current sensing in isolated DC-DC converters for peak-current-mode control and load regulation. IC Role / Device Role / Timing Role: High-accuracy analog current transducer replacing optocoupled or transformer-based feedback; interfaces directly with PWM controller. Use Value: Ratiometric output maintains regulation accuracy across input voltage variations; ±20A range covers multi-kW server PSU designs. |
Use Scenario: Fast over-current detection in battery protection ICs or e-fuse circuits for EV charging modules and UPS systems. IC Role / Device Role / Timing Role: Primary fault detector with independent /OCD output; triggers hardware shutdown before MOSFET avalanche or thermal runaway. Use Value: Configurable OCD threshold (50–240% of IPMAX) allows precise trip point tuning for different battery chemistries and cable gauges. |
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 | SOIC-8 package (5.9mm × 4.9mm); higher 1.2mΩ conductor resistance; ±1.5% typical accuracy at 25°C only. | Lacks integrated OCD output; requires external comparator and latch for fault detection. | Select when board space permits larger package and OCD is implemented externally; not suitable for ultra-fast (<2µs) fault response. |
| TMC1638-LA | Integrated 20-bit sigma-delta ADC; digital SPI output; 0.8mΩ conductor; ±0.5% typical gain error but no factory offset trim. | Requires MCU firmware support for digital interface; no analog VOUT fallback for analog control loops. | Select when digital current data is preferred and system already uses SPI peripherals; avoid if analog feedback to analog compensators is required. |
Compared with ACS724LLCTR-20AB-T and TMC1638-LA, the MCS1823GQTE-520BRN-Z uniquely combines ultra-small TQFN-12 packaging, integrated OCD with sub-1µs latency, and guaranteed ±2.5% total error over full temperature range - making it optimal for space- and speed-critical industrial power stages where analog interface and rapid fault containment are mandatory.
Availability
MCS1823GQTE-520BRN-Z is available at Aetrix Electronics and suitable for motor control, switch-mode power supplies, and over-current fault protection requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MCS1823GQTE-520BRN-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 current sensors - with a focus on efficiency, integration, and reliability.
The MCS1823 product line targets compact, high-accuracy current sensing in space-constrained power systems - delivering Hall-effect sensing with integrated diagnostics, low thermal drift, and industry-leading small-form-factor packaging.
FAQ
What is the maximum continuous current the MCS1823GQTE-520BRN-Z can measure without saturation?
The device is rated for ±20A with linear output and ±2.5% total error. Beyond ±20A, VOUT remains proportional but nonlinearity increases beyond specification; saturation occurs near ±25A (VOUT ≈ 0.3V or VCC–0.5V), confirmed by electrical characteristics tables and functional block diagram behavior under overload.
Does the /OCD pin require an external pull-up resistor, and what value range is supported?
Yes - /OCD is open-drain and requires an external pull-up resistor to VCC. The datasheet specifies 10kΩ to 500kΩ; values in this range allow OCD threshold adjustment from 50% to 240% of IPMAX. A 100kΩ resistor sets ~100% threshold, verified in the "/OCD external pull-up resistance" parameter table.
Is the VOUT output ratiometric or absolute for the MCS1823GQTE-520BRN-Z variant?
This part uses the "R" suffix in its package code (MCS1823GQTE-520BRN-Z), indicating ratiometric output mode. At zero current, VOUT = VCC/2 = 2.5V (with 5V supply); output scales linearly with both current and supply voltage, confirmed in the "Ratiometry" section of Electrical Characteristics.
Can the MCS1823GQTE-520BRN-Z be used in automotive applications?
Yes - it is qualified for TJ = –40°C to +125°C, has AEC-Q200-compatible construction (per MPS green status documentation), and meets IEC62368-1 basic isolation (100VPK/100VDC). Its differential Hall architecture and 1µs OCD make it suitable for EPS, HVAC blower, and battery disconnect modules.
What is the recommended PCB layout practice for minimizing thermal drift and noise?
Place the 0.1µF–1µF VCC bypass capacitor within 2mm of Pin 12; connect the exposed thermal pad to a ≥200mm² internal copper pour tied to GND; separate analog (GND, VOUT) and power (IP+, IP-) traces with guard rings; avoid routing high-dI/dt traces near Pins 1–4 to prevent coupling into Hall elements.
How does the spinning current technique improve offset stability?
Spinning current dynamically rotates the Hall plate bias direction each conversion cycle, canceling fixed-offset errors from process mismatches and thermoelectric effects. This achieves <±15mV offset variation over temperature - validated in the "Offset voltage VOE" parameter table and functional block diagram's "Dynamic Offset Cancellation" block.
Is there isolation between the primary current path and the signal circuitry?
Yes - the device provides basic isolation per IEC62368-1 with VIOWM = 100VPK/100VDC, achieved via internal mold compound and dielectric spacing. This enables safe galvanic separation between high-power IP+ / IP– paths and low-voltage VOUT/GND signals without external isolation components.
MCS1823GQTE-520BRN-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:
- 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)
MCS1823GQTE-520BRN-Z FAQ
1.How can I place an order for MCS1823GQTE-520BRN-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MCS1823GQTE-520BRN-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 MCS1823GQTE-520BRN-Z reliable?
The price and inventory of MCS1823GQTE-520BRN-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCS1823GQTE-520BRN-Z is usually 5 days.
3.What payment methods are accepted for MCS1823GQTE-520BRN-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCS1823GQTE-520BRN-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MCS1823GQTE-520BRN-Z?
MCS1823GQTE-520BRN-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MCS1823GQTE-520BRN-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 MCS1823GQTE-520BRN-Z?
For technical support, including MCS1823GQTE-520BRN-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCS1823GQTE-520BRN-Z requirements.
6.How does Aetrix verify that MCS1823GQTE-520BRN-Z is sourced from the original manufacturer or authorized distributors?
All MCS1823GQTE-520BRN-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 MCS1823GQTE-520BRN-Z meets industry standards.
7.What is the process for return or replacement of MCS1823GQTE-520BRN-Z?
All MCS1823GQTE-520BRN-Z units undergo pre-shipment inspection (PSI). If there is an issue with MCS1823GQTE-520BRN-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 MCS1823GQTE-520BRN-Z part is unused and in its original packaging.
Return procedure for MCS1823GQTE-520BRN-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MCS1823GQTE-520BRN-Z Tags
-
ACS711KEXLT-31AB-T
Allegro MicroSystems
-
ACS711KEXLT-15AB-T
Allegro MicroSystems
-
CT110FDV-ID6
Allegro MicroSystems
-
ACS71240KEXBLT-010B3
Allegro MicroSystems
-
TMCS1108A3BQDR
Texas Instruments
-
ACS711ELCTR-12AB-T
Allegro MicroSystems
-
ACS711ELCTR-25AB-T
Allegro MicroSystems
-
ACS711KLCTR-12AB-T
Allegro MicroSystems
-
ACS711KLCTR-25AB-T
Allegro MicroSystems
-
ACS70331EESATR-005B3
Allegro MicroSystems
-
ACS70331EESATR-2P5U3
Allegro MicroSystems
-
ACS70331EESATR-2P5B3
Allegro MicroSystems
Tech Hub
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…
