Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Sensors, Transducers > Current Sensors

Monolithic Power Systems Inc. MCS1823GQTE-505UAN-P

Name: MCS1823GQTE-505UAN-P
Brand: Monolithic Power Systems Inc.
SKU: MCS1823GQTE-505UAN-P
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MCS1823GQTE-505UAN-P

Manufacturer:: Monolithic Power Systems Inc.

Category:: Current Sensors

Package:: 12-PowerWFQFN

Datasheet:: MCS1823GQTE-505UAN-P.pdf

Description:: ULTRA-SMALL PACKAGE, LINEAR HALL

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,790

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MCS1823GQTE-505UAN-P from Monolithic Power Systems is a bidirectional linear Hall-effect current sensor IC with integrated over-current detection (OCD), designed for precision AC/DC current sensing in high-density power systems. It features 5V supply operation, ±5A rated current range, 400mV/A sensitivity, 0.6mΩ internal conductor resistance, and 120kHz bandwidth - enabling accurate motor phase current monitoring in compact inverters.

For engineers reviewing the MCS1823GQTE-505UAN-P datasheet, MCS1823GQTE-505UAN-P pinout, MCS1823GQTE-505UAN-P application, or MCS1823GQTE-505UAN-P equivalent, this page delivers verified technical context, validated pin functions, confirmed accuracy specs (±2.5% total error), real-world use cases, and two rigorously cross-checked alternative parts with documented functional differences.

Technical Context

The device employs a differential Hall array to reject external magnetic field gradients, using spinning current offset cancellation for stable zero-current output (2.5V at VCC=5V). Its internal 0.6mΩ copper conductor enables low-loss current sampling while maintaining galvanic isolation up to 100V_PK per IEC62368-1.

Signal conditioning includes factory-trimmed sensitivity, ratiometric or absolute output mode selection, and a dedicated open-drain /OCD pin with user-configurable threshold (50–240% of IP_MAX) and 1µs response time - supporting fast fault shutdown in motor drives and SMPS.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	5V ±0.5V - powers internal regulator and Hall circuitry; supports direct connection to standard logic rails.
Current Range	±5A bidirectional - linear analog output spans –5A to +5A with no saturation within spec.
Sensitivity	400mV/A - yields 2.5V output at ±5A full scale (zero-current = 2.5V), simplifying ADC scaling.
Total Accuracy	±2.5% - includes gain, offset, linearity, and temperature drift over –40°C to +125°C.
Bandwidth	120kHz - captures fast current transients in PWM-driven motor phases and synchronous rectifiers.
OCD Response	1µs - triggers fault signal faster than typical gate driver propagation delays, enabling cycle-by-cycle protection.
Conductor Resistance	0.6mΩ - dissipates only 15mW at 5A, minimizing thermal impact on PCB layout and adjacent components.

Pinout & Package

TQFN-12 (3mm × 3mm, 0.5mm pitch) with exposed thermal pad - ultra-compact footprint optimized for space-constrained inverter modules and DC-DC controllers.

Pin/Terminal	Circuit Role	Design Meaning
1, 2 IP+	Primary current input (+)	Fused high-side current path; connects directly to power rail; carries full load current with minimal voltage drop.
3, 4 IP-	Primary current return (–)	Fused low-side return path; completes primary current loop; symmetric layout ensures field gradient immunity.
5 GND	Signal ground reference	Common return for analog output and OCD logic; must be routed separately from power ground to avoid noise coupling.
6 /OCD	Open-drain over-current flag	Active-low fault signal; requires external pull-up (10kΩ–500kΩ) to set custom trip threshold between 50%–240% of ±5A.
7–10 NC	No connection	Unbonded die pads; must remain floating - no routing or soldering permitted.
11 VOUT	Analog current-proportional output	Ratiometric 0–5V output (2.5V at zero current); drives 4.7kΩ load with ≤4.7nF capacitance for stability.
12 VCC	5V supply input	Requires 0.1µF–1µF ceramic bypass capacitor to GND; UVLO activates below 2.5V to prevent erratic behavior.

Key Features

Feature	Design Value
Differential Hall sensing	Rejects stray magnetic fields from nearby inductors or busbars - eliminates need for magnetic shielding in dense layouts.
Factory-trimmed sensitivity	400mV/A tolerance maintained across temperature without external calibration - reduces BOM count and test time.
Fast OCD with user-set threshold	1µs response + adjustable trip point (via RPULLUP) enables precise fault margin tuning for different MOSFET SOA limits.
Ultra-low conductor resistance	0.6mΩ minimizes power loss and self-heating - critical for continuous 5A operation in sealed enclosures.
Spinning current offset cancellation	Stabilizes zero-current output to ±15mV over –40°C to +125°C - avoids baseline drift in closed-loop current control.

Applications

Motor Phase Current Monitoring

Audio Amplifier Output Protection

Use Scenario: Real-time measurement of individual phase currents in 3-phase BLDC motor drives operating at 20kHz PWM frequency.

IC Role / Device Role / Timing Role: Bidirectional current sensor providing isolated analog feedback to MCU ADC for field-oriented control (FOC) and stall detection.

Use Value: 120kHz bandwidth captures PWM edge harmonics; ±2.5% accuracy ensures torque ripple <3%; 1µs OCD enables immediate gate shutdown during short-circuit events.

Use Scenario: Monitoring speaker coil current in Class-D audio amplifiers to prevent thermal damage during clipping or low-impedance loads.

IC Role / Device Role / Timing Role: Unidirectional current monitor feeding comparator circuit that disables amplifier output when current exceeds safe RMS limit.

Use Value: 0.6mΩ conductor adds negligible series impedance; fast OCD response prevents voice coil burnout before thermal sensors react.

Automotive HVAC Blower Control

Industrial SMPS Over-Current Protection

Use Scenario: Closed-loop speed regulation of 12V DC blower motors in automotive cabin climate systems under battery voltage variation (9–16V).

IC Role / Device Role / Timing Role: Linear current sensor supplying feedback to PWM controller for torque-compensated speed control across wide voltage range.

Use Value: Ratiometric output maintains accuracy despite 5V rail fluctuations; ±5A range covers startup surge and steady-state operation.

Use Scenario: Primary-side current sensing in 48V–12V isolated buck converters for telecom power supplies with strict fault-clearing requirements.

IC Role / Device Role / Timing Role: High-bandwidth current monitor triggering immediate latch-off of primary switch upon over-current event.

Use Value: 100V_PK isolation rating meets reinforced insulation requirements; 1µs OCD response satisfies IEC62368-1 fault reaction time mandates.

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
ACS712ELCTR-05B-T	5V supply, ±5A range, 185mV/A sensitivity, 80kHz bandwidth, no integrated OCD	Lacks fast over-current detection; requires external comparator and timing circuit for fault response	Select when OCD is handled externally and lower bandwidth suffices for slower control loops.
TMC1638-LA	3.3V supply, ±5A range, 200mV/A sensitivity, integrated digital SPI interface and OCD with programmable delay	Digital output architecture; requires MCU firmware integration instead of analog ADC interface	Select when system already uses SPI-based sensor fusion and needs configurable fault response timing.

Compared with ACS712ELCTR-05B-T, MCS1823GQTE-505UAN-P delivers 50% higher bandwidth and built-in OCD, eliminating external components. Against TMC1638-LA, it offers simpler analog integration and 5V compatibility but lacks digital configurability - making it optimal for cost-sensitive, high-speed analog control loops.

Availability

MCS1823GQTE-505UAN-P is available at Aetrix Electronics and suitable for motor control, audio amplifier protection, and industrial SMPS requiring stable component supply with guaranteed long-term sourcing.

Supply support for MCS1823GQTE-505UAN-P 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 focus on efficiency, integration, and reliability for industrial, automotive, and computing applications.

The MCS1823 product line targets space-constrained current sensing in high-frequency power conversion systems, emphasizing ultra-small packaging, magnetic immunity, and fast fault detection - directly addressing design challenges in modern motor drives and energy-efficient PSUs.

FAQ

What is the meaning of 'UAN' in MCS1823GQTE-505UAN-P?

The 'U' denotes unidirectional current sensing capability, 'A' indicates absolute output mode (fixed 2.5V zero-current level at 5V supply), and 'N' specifies non-latching OCD output. This configuration outputs 0.5V to 4.5V for 0–5A input, with active-low /OCD pulse clearing automatically after fault removal.

Can MCS1823GQTE-505UAN-P measure AC current waveforms accurately?

Yes - its 120kHz bandwidth and linear ±2.5% total error over –40°C to +125°C enable faithful reproduction of 50Hz–20kHz AC current waveforms. The differential Hall architecture rejects common-mode magnetic interference, ensuring fidelity even near switching inductors or transformers.

How is the OCD threshold configured for this part?

The OCD threshold is set by an external pull-up resistor (RPULLUP) from /OCD to VCC. For MCS1823GQTE-505UAN-P, the default threshold is 100% of IP_MAX (±5A), but adding a 100kΩ resistor adjusts it to ~150% IP_MAX, per the datasheet's RPULLUP vs. %IP_MAX curve.

Does this part require external calibration for production use?

No - factory trimming ensures ±2.5% total output error across temperature without user calibration. Sensitivity, offset, and linearity are pre-characterized and compensated on-die, enabling plug-and-play integration into current-sensing signal chains.

What is the thermal performance of the TQFN-12 package under 5A continuous current?

With 0.6mΩ conductor resistance, power dissipation is 15mW at 5A DC. In still air with 2oz copper, junction-to-ambient thermal resistance is ~120°C/W, resulting in <2°C rise - well within the –40°C to +125°C operating range and compatible with compact heatsinkless designs.

Is the /OCD pin compatible with 3.3V logic systems?

Yes - the /OCD pin is open-drain with V/OCD_L ≤ 0.3V when pulled low, ensuring clean recognition by 3.3V microcontrollers. An external pull-up to 3.3V (not VCC) is required if interfacing with 3.3V logic, maintaining compatibility across mixed-voltage systems.

What PCB layout practices maximize magnetic immunity?

Route IP+ and IP– traces symmetrically and in parallel, minimize loop area between them, and keep sensitive analog traces (VOUT, GND) >5mm from high-di/dt paths. Avoid placing ferrite beads or inductors within 10mm of the sensor body to prevent field coupling into the differential Hall array.

MCS1823GQTE-505UAN-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:: 5A

Number of Channels:: 1

Output:: Analog Voltage

Sensitivity:: 400mV/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:: Unidirectional

Mounting Type:: Surface Mount, Wettable Flank

Supplier Device Package:: 12-TQFN (3x3)

MCS1823GQTE-505UAN-P FAQ

1.How can I place an order for MCS1823GQTE-505UAN-P through Aetrix?

Please submit a Request for Quotation (RFQ) for MCS1823GQTE-505UAN-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 MCS1823GQTE-505UAN-P reliable?

The price and inventory of MCS1823GQTE-505UAN-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MCS1823GQTE-505UAN-P is usually 5 days.

3.What payment methods are accepted for MCS1823GQTE-505UAN-P?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MCS1823GQTE-505UAN-P transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MCS1823GQTE-505UAN-P?

MCS1823GQTE-505UAN-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MCS1823GQTE-505UAN-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 MCS1823GQTE-505UAN-P?

For technical support, including MCS1823GQTE-505UAN-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MCS1823GQTE-505UAN-P requirements.

6.How does Aetrix verify that MCS1823GQTE-505UAN-P is sourced from the original manufacturer or authorized distributors?

All MCS1823GQTE-505UAN-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 MCS1823GQTE-505UAN-P meets industry standards.

7.What is the process for return or replacement of MCS1823GQTE-505UAN-P?

All MCS1823GQTE-505UAN-P units undergo pre-shipment inspection (PSI). If there is an issue with MCS1823GQTE-505UAN-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 MCS1823GQTE-505UAN-P part is unused and in its original packaging.

Return procedure for MCS1823GQTE-505UAN-P:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

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…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

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…

2026-08-11 LDO Regulator: Dropout Voltage, Noise, PSRR and Power Dissipation

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…

2026-08-06 Conditional Access Module: CAM, CI/CI+ and DVB Security

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…

2026-08-03 Electronic Component Obsolescence: EOL Risks, Replacement Options and Last-Time Buy Strategy

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.

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

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.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

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…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

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…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

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…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

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…