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

Diodes Incorporated ZXCT1082E5TA

Name: ZXCT1082E5TA
Brand: Diodes Incorporated
SKU: ZXCT1082E5TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXCT1082E5TA

Manufacturer:: Diodes Incorporated

Category:: Current Regulation/Management

Package:: SC-74A, SOT-753

Datasheet:: ZXCT1082E5TA.pdf

Description:: IC CURRENT MONITOR SOT25

Quantity:: RFQ Add To RFQ list

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Inventory:5,398

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Product details

Overview

ZXCT1082E5TA from Diodes Incorporated is a precision high-side unipolar current monitor IC in SOT25 package, designed for non-invasive load current sensing without ground-plane disruption. It operates with 2.7V–60V supply and common-mode input range, delivers 200 µA/V transconductance, exhibits ±0.2 mV input offset voltage (typ), and draws only 0.6 µA quiescent current - enabling high-accuracy, low-error current measurement in automotive power distribution and industrial 24–28V rail systems.

For engineers reviewing the ZXCT1082E5TA datasheet, ZXCT1082E5TA pinout, ZXCT1082E5TA application, or ZXCT1082E5TA equivalent, key selection considerations include its 60V max operating voltage, three-resistor gain configuration (RG/RGT), AEC-Q100 Grade 1 qualification, -40°C to +125°C operation, and current-output architecture optimized for high-common-mode, low-power sensing.

Technical Context

The ZXCT1082E5TA implements a high-side current sense architecture using an internal transconductance amplifier with externally set gain via RG and RGT resistors. Its input stage accepts common-mode voltages up to 60V while maintaining precise differential sensing across RSENSE, independent of VCC level.

It features a current-output interface (OUT pin) referenced to S−, enabling direct connection to high-impedance monitoring circuits or external transimpedance amplifiers. The device achieves 80 dB CMRR and PSRR over 0.1 Hz–100 kHz, with 500 kHz small-signal bandwidth at G = 25 and <5 µs 0.1% settling time - supporting dynamic load monitoring in real-time protection systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	2.7 V to 60 V - supports direct connection to automotive battery rails and industrial 24/28 V systems without level-shifting.
Common-Mode Input Range	2.7 V to 60 V - enables sensing on high-side of load without ground reference compromise.
Transconductance (GT)	200 µA/V (typ) - defines output current per millivolt of sensed differential voltage (VSENSE).
Input Offset Voltage	±0.2 mV (typ) - contributes ≤0.2% error at 100 mV VSENSE, critical for low-current accuracy.
Quiescent Current	0.6 µA (typ) - minimizes system power overhead and self-heating-induced drift in battery-powered designs.
Bandwidth (-3dB)	500 kHz at G = 25 - supports fast transient detection in overcurrent protection and motor control feedback loops.
Operating Temperature	-40°C to +125°C - qualified for under-hood automotive and industrial ambient environments.

Pinout & Package

SOT25 (5-pin SC-74A) package: compact 2.8 mm × 1.6 mm footprint with 0.95 mm pitch, optimized for space-constrained PCB layouts in automotive ECUs and industrial controllers.

Pin/Terminal	Circuit Role	Design Meaning
1 OUT	Current output terminal	Delivers output current IOUT = GT × VSENSE; sinks current relative to S−, requires external load or transimpedance stage.
2 GND	Analog ground reference	Provides return path for internal bias circuitry; must be connected to system ground with low-impedance trace.
3 S+	Positive current-sense input	Connects to VSUPPLY side of shunt resistor; tolerates up to 60 V common-mode voltage.
4 S−	Negative current-sense input	Connects to VLOAD side of shunt resistor; defines differential sense node (VSENSE = VS+ − VS−).
5 VCC	Analog supply input	Powers internal amplifier; independent of common-mode range - can be derived from local 3.3 V or 5 V rail.

Key Features

Feature	Design Value
High common-mode voltage tolerance	60 V max - eliminates need for isolated amplifiers or level-shifters in 24/48 V systems.
Ultra-low quiescent current	0.6 µA - reduces measurement error in low-power standby modes and extends battery life.
Configurable transconductance gain	Set via external RG and RGT resistors - enables optimization of sensitivity, bandwidth, and noise trade-offs.
AEC-Q100 Grade 1 qualification	-40°C to +125°C operation with stress-tested reliability - suitable for automotive powertrain and body electronics.
High CMRR and PSRR	80–100 dB over 0.1 Hz–100 kHz - rejects supply ripple and common-mode noise in noisy vehicle/bus environments.

Applications

Automotive Battery Monitoring

Industrial 24V Rail Protection

Use Scenario: Real-time monitoring of starter battery discharge/charge current in 12 V/24 V commercial vehicles.

IC Role / Device Role / Timing Role: High-side current sensor feeding analog-to-digital converter in battery management unit (BMU) for state-of-charge estimation.

Use Value: Enables accurate Coulomb counting with <0.5% full-scale error over temperature, leveraging ±0.2 mV offset and 60 V common-mode headroom.

Use Scenario: Overcurrent detection in programmable logic controller (PLC) output modules driving solenoids and actuators.

IC Role / Device Role / Timing Role: Fast-response current monitor triggering shutdown within 5 µs (0.1%) upon fault detection.

Use Value: Provides 500 kHz bandwidth and sub-µA quiescent draw to maintain system responsiveness without compromising energy efficiency.

DC Power Supply Current Limiting

LED Driver Load Sensing

Use Scenario: Precision current regulation in isolated DC-DC converters used in telecom power supplies.

IC Role / Device Role / Timing Role: High-side sense element in feedback loop of secondary-side controller, referenced to floating output rail.

Use Value: Delivers stable 200 µA/V transconductance with <2% gain error over temperature, ensuring tight current limit accuracy.

Use Scenario: Thermal derating and open-circuit detection in high-brightness LED driver modules for street lighting.

IC Role / Device Role / Timing Role: Current monitor placed on LED string high-side to detect gradual current drift or catastrophic open faults.

Use Value: Achieves <12 pA/√Hz output noise density and 80 dB CMRR, enabling reliable detection of <1% current deviation amid EMI-rich lamp environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current monitoring applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX4080TASA+	Voltage-output (2.5 V/V fixed gain), 60 V common-mode, 125 µA IQ, SO8 package	Lacks external gain configuration; requires external op-amp for current-to-voltage conversion if higher gain needed	Preferred when fixed-ratio voltage output simplifies ADC interfacing and board space permits SO8 footprint
INA240A1QDRQ1	Current-output (20 V/V fixed gain), 80 V common-mode, 2.4 mA IQ, SO8 package, integrated ESD protection	Higher quiescent current limits use in ultra-low-power sleep modes; wider common-mode supports 48 V systems	Chosen for automotive 48 V mild-hybrid systems where extended voltage range and AEC-Q100 Grade 0 compliance are mandatory

Compared with MAX4080TASA+, ZXCT1082E5TA offers lower power (0.6 µA vs. 125 µA) and flexible gain tuning but requires external components. Against INA240A1QDRQ1, it trades higher voltage range and ESD robustness for 4× lower IQ and smaller SOT25 footprint - favoring cost-sensitive, space-constrained 12/24 V applications.

Availability

ZXCT1082E5TA is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial 24V rail protection, and DC power supply current limiting requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.

Supply support for ZXCT1082E5TA 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, application-optimized components for automotive, industrial, and computing markets.

ZXCT1082E5TA belongs to Diodes' precision current sensing product line, engineered specifically for high-common-mode, low-quiescent-current high-side monitoring in harsh-environment power systems.

FAQ

What is the maximum allowable differential input voltage (VSENSE) for ZXCT1082E5TA?

The ZXCT1082E5TA specifies a recommended operating VSENSE range of 0 V to 0.5 V, with absolute maximum differential input voltage of ±800 mV. Operation beyond 0.5 V risks nonlinear transconductance response and increased gain error, as confirmed in the DS32162 datasheet's electrical characteristics table under "VSENSE Differential Sense Input Voltage Range".

Can ZXCT1082E5TA operate with VCC lower than the common-mode input voltage?

Yes - ZXCT1082E5TA supports independent supply and common-mode voltage domains. VCC may be as low as 2.7 V while sensing inputs up to 60 V (e.g., VCC = 3.3 V, VS+ = 48 V). This decoupling is explicitly stated in the "Features" section and validated in Recommended Operating Conditions (VIN and VCC ranges are specified separately).

How is gain configured on ZXCT1082E5TA, and what resistor values are typical?

Gain is set by two external resistors: RG (between OUT and S−) and RGT (between S+ and S−). For nominal 200 µA/V transconductance, typical values are RG = 125 kΩ and RGT = 5 kΩ, as used in all datasheet test conditions. Gain scales linearly with RG/RGT ratio, allowing customization from ~40 µA/V to >1 mA/V depending on application SNR and bandwidth needs.

Is ZXCT1082E5TA pin-compatible with other members of the ZXCT108x family?

Yes - all ZXCT1082/83/84/85/86/87 variants share identical SOT25 pinout and footprint. However, functional differences exist: ZXCT1082/83 are current-output with external gain resistors; ZXCT1084/85/86/87 are voltage-output with fixed gains (25× or 50×). Direct substitution requires verifying output type, gain, and voltage rating compatibility.

ZXCT1082E5TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Current Monitor

Sensing Method:: High-Side

Accuracy:: -

Voltage - Input:: 2.7V ~ 60V

Current - Output:: -

Operating Temperature:: -40°C ~ 125°C

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-25

ZXCT1082E5TA FAQ

1.How can I place an order for ZXCT1082E5TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXCT1082E5TA 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 ZXCT1082E5TA reliable?

The price and inventory of ZXCT1082E5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT1082E5TA is usually 5 days.

3.What payment methods are accepted for ZXCT1082E5TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT1082E5TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXCT1082E5TA?

ZXCT1082E5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXCT1082E5TA 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 ZXCT1082E5TA?

For technical support, including ZXCT1082E5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT1082E5TA requirements.

6.How does Aetrix verify that ZXCT1082E5TA is sourced from the original manufacturer or authorized distributors?

All ZXCT1082E5TA 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 ZXCT1082E5TA meets industry standards.

7.What is the process for return or replacement of ZXCT1082E5TA?

All ZXCT1082E5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT1082E5TA, 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 ZXCT1082E5TA part is unused and in its original packaging.

Return procedure for ZXCT1082E5TA:

1.Submit a request within 90 days.

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

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