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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Current Regulation/Management

Diodes Incorporated ZXCT180A2W5-7

Name: ZXCT180A2W5-7
Brand: Diodes Incorporated
SKU: ZXCT180A2W5-7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXCT180A2W5-7

Manufacturer:: Diodes Incorporated

Category:: Current Regulation/Management

Package:: SC-74A, SOT-753

Datasheet:: ZXCT180A2W5-7.pdf

Description:: CM VOLTAGE OUTPUT SOT25 T&R 3K

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Inventory:3,000

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Product details

Overview

ZXCT180A2W5-7 from Diodes Incorporated is a unidirectional current shunt monitor optimized for high-accuracy, wide common-mode (–0.3 V to 26 V) sensing in low-side and high-side configurations. It delivers 50 V/V fixed gain, ±1% max gain error over –40°C to +125°C, 400 µV max input offset voltage, 370 µA max quiescent current, and 300 kHz small-signal bandwidth - enabling fast fault detection in motor control and power management systems.

For engineers reviewing the ZXCT180A2W5-7 datasheet, ZXCT180A2W5-7 pinout, ZXCT180A2W5-7 application, or ZXCT180A2W5-7 equivalent, key selection criteria include its SOT25 package compatibility, rail-to-rail output swing, AEC-Q100 Grade 1 qualification, and support for shunt-based current monitoring across automotive and industrial supply rails up to 26 V.

Technical Context

The ZXCT180A2W5-7 implements a precision current-sense amplifier topology with input stage biasing that enables accurate measurement of differential voltages across shunts while rejecting common-mode signals up to 26 V - independent of its 2.7 V to 5.5 V supply voltage. Its internal resistor network fixes gain at 50 V/V, eliminating external component dependencies.

It features a 300 kHz bandwidth at 50 V/V gain, 2 V/µs slew rate, and rail-to-rail output capable of driving 10 kΩ loads within 30 mV of supply rails. Input offset drift is limited to 1 µV/°C, and CMRR exceeds 84 dB across temperature and common-mode range.

Key Specifications

Parameter	Value and Actual Design Meaning
Fixed Gain	50 V/V - sets output voltage = 50 × shunt voltage without external resistors
Common-Mode Range	–0.3 V to 26 V - supports sensing on high-side or low-side shunts powered by up to 26 V rails
Gain Error (max)	±1% over –40°C to +125°C - ensures consistent scaling accuracy across automotive temperature range
Input Offset Voltage	±400 µV max - limits minimum detectable current error when using typical 10 mΩ shunts
Small-Signal Bandwidth	300 kHz - enables response to rapid load transients in motor commutation or fault events
Quiescent Current	370 µA max - allows integration into always-on subsystems without excessive standby power penalty
Supply Voltage Range	2.7 V to 5.5 V - compatible with standard microcontroller I/O domains and LDO outputs

Pinout & Package

Package: 5-pin SOT25 (3.0 mm × 1.6 mm × 1.1 mm), RoHS-compliant, halogen-free, AEC-Q100 Grade 1 qualified.

Pin/Terminal	Circuit Role	Design Meaning
GND	Ground reference	System ground connection for analog and power return paths; must be star-connected to minimize noise coupling
VS	Power supply	2.7 V–5.5 V supply input; requires local 0.1 µF bypass capacitor to GND for stability
IN+	Analog input (+)	Connects to supply side of shunt resistor; tolerates up to 26 V regardless of VS level
IN–	Analog input (–)	Connects to load side of shunt resistor; forms differential pair with IN+ for V_SENSE measurement
OUT	Analog output	Voltage proportional to shunt current (V_OUT = 50 × V_SENSE); rail-to-rail swing supports full-scale ADC interfacing

Key Features

Feature	Design Value
Rail-to-rail output	Swings within 30 mV of VS and GND - maximizes dynamic range for 3.3 V or 5 V ADC inputs
Low offset drift	1 µV/°C - maintains <10 mV total offset shift over full –40°C to +125°C range, critical for thermal-stable current thresholds
High CMRR	84 dB min - rejects noise from noisy 26 V bus rails during low-level shunt voltage measurement
AEC-Q100 Grade 1	Qualified for –40°C to +125°C operation - meets automotive electronics reliability requirements without derating
ESD robustness	5 kV HBM - withstands handling and board-level ESD events in production and field environments

Applications

Motor Control

Automotive Power Distribution

Use Scenario: Real-time phase current monitoring in BLDC motor drivers with 12 V–24 V battery supply.

IC Role / Device Role / Timing Role: High-side current sense amplifier feeding PWM-controlled gate drivers and MCU ADC.

Use Value: 300 kHz bandwidth captures commutation transients; ±1% gain error enables precise torque regulation without calibration.

Use Scenario: Fuseless overcurrent protection in 12 V/24 V vehicle body control modules.

IC Role / Device Role / Timing Role: Low-quiescent-current shunt monitor triggering MCU fault interrupts on >100 A surge events.

Use Value: 370 µA max IQ extends sleep-mode battery life; 26 V common-mode handles load-dump transients per ISO 7637-2.

Solar Inverter DC Link Monitoring

Industrial PLC Analog Input Modules

Use Scenario: Bidirectional DC current sensing in string inverters with 600 V+ bus (using isolated shunt).

IC Role / Device Role / Timing Role: Unidirectional high-side monitor on isolated low-voltage side, interfacing to isolated ADC.

Use Value: –0.3 V to 26 V common-mode range accommodates floating shunt references; 50 V/V gain scales 50 mV shunt to 2.5 V full scale.

Use Scenario: Precision 4–20 mA loop transmitter current sensing in factory automation I/O cards.

IC Role / Device Role / Timing Role: Low-drift, low-power current monitor for feedback control of DAC-driven current sources.

Use Value: ±400 µV max V_OS ensures <0.1% FSR error at 20 mA; AEC-Q100 qualification validates long-term stability in harsh environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-sense amplifier applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
INA240A2IDR	Higher 100 V/V gain option, 10x lower offset (±5 µV typ), but 1.1 mA IQ and SOIC-8 package	Requires PCB redesign for larger footprint and higher supply current; better for ultra-precision, less constrained power budgets	Select if offset-critical <0.01% FSR accuracy required and SOIC-8 layout is acceptable
MAX4080TASA+	Same 50 V/V gain, 2.7 V–76 V supply, but only 200 kHz bandwidth and no AEC-Q100 rating	Lacks automotive qualification; suitable for industrial controls where extended voltage range outweighs temp grade need	Select if operating beyond 26 V common-mode is required and AEC-Q100 is not mandatory

Compared with INA240A2IDR and MAX4080TASA+, the ZXCT180A2W5-7 uniquely balances AEC-Q100 Grade 1 compliance, SOT25 space efficiency, 300 kHz bandwidth, and sub-400 µA quiescent current - making it optimal for cost-sensitive, thermally demanding automotive and industrial motor control nodes.

Availability

ZXCT180A2W5-7 is available at Aetrix Electronics and suitable for motor control, automotive power distribution, solar inverter DC link monitoring, and industrial PLC analog input modules requiring stable component supply across extended temperature and voltage ranges.

Supply support for ZXCT180A2W5-7 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, AEC-Q100-qualified components for automotive, industrial, and computing markets.

The ZXCT180 series is part of Diodes' precision analog portfolio, designed specifically for high-accuracy, wide common-mode current sensing in space-constrained, thermally aggressive environments such as engine control units and battery management systems.

FAQ

What is the difference between ZXCT180A2W5-7 and ZXCT180B2W5-7?

The ZXCT180A2W5-7 has the OUT pin on Pin 1 (SOT25 pinout A), while ZXCT180B2W5-7 places OUT on Pin 4 (pinout B). Both deliver identical 50 V/V gain, electrical performance, and temperature specs. The pinout variation provides layout flexibility for routing OUT signal away from sensitive analog inputs or toward specific MCU ADC pins without crossing traces.

Can ZXCT180A2W5-7 measure current in high-side configurations with 24 V bus voltage?

Yes. Its –0.3 V to 26 V common-mode input range allows direct connection across shunts placed between 24 V supply and load, even when powered by a separate 3.3 V or 5 V rail. The device's input stage operates independently of VS, enabling accurate V_SENSE amplification without level-shifting circuitry.

Does ZXCT180A2W5-7 require external gain-setting resistors?

No. It integrates precision thin-film resistors to fix gain at 50 V/V. No external components are needed for basic operation - simplifying BOM, reducing layout area, and eliminating resistor tolerance and thermal drift contributions to overall system error.

Is ZXCT180A2W5-7 suitable for continuous operation at +125°C ambient?

Yes. It is AEC-Q100 Grade 1 qualified for –40°C to +125°C ambient operation, with guaranteed performance including ±1% gain error, ±400 µV offset, and 300 kHz bandwidth across that full range. Thermal resistance (R_θJA = 128 °C/W) assumes standard FR-4 PCB with minimum recommended pad layout.

ZXCT180A2W5-7 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: SC-74A, SOT-753

Packaging:: Cut Tape (CT)

Product Status:: Active

Function:: Current Monitor

Sensing Method:: High/Low-Side

Accuracy:: ±0.1%

Voltage - Input:: 2.7V ~ 5.5V

Current - Output:: 8mA

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-25

ZXCT180A2W5-7 FAQ

1.How can I place an order for ZXCT180A2W5-7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXCT180A2W5-7 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 ZXCT180A2W5-7 reliable?

The price and inventory of ZXCT180A2W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT180A2W5-7 is usually 5 days.

3.What payment methods are accepted for ZXCT180A2W5-7?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT180A2W5-7 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXCT180A2W5-7?

ZXCT180A2W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXCT180A2W5-7 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 ZXCT180A2W5-7?

For technical support, including ZXCT180A2W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT180A2W5-7 requirements.

6.How does Aetrix verify that ZXCT180A2W5-7 is sourced from the original manufacturer or authorized distributors?

All ZXCT180A2W5-7 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 ZXCT180A2W5-7 meets industry standards.

7.What is the process for return or replacement of ZXCT180A2W5-7?

All ZXCT180A2W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT180A2W5-7, 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 ZXCT180A2W5-7 part is unused and in its original packaging.

Return procedure for ZXCT180A2W5-7:

1.Submit a request within 90 days.

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

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