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

Diodes Incorporated ZXCT1084E5TA

Name: ZXCT1084E5TA
Brand: Diodes Incorporated
SKU: ZXCT1084E5TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXCT1084E5TA

Manufacturer:: Diodes Incorporated

Category:: Current Regulation/Management

Package:: SC-74A, SOT-753

Datasheet:: ZXCT1084E5TA.pdf

Description:: IC CURRENT MONITOR SOT25

Quantity:: RFQ Add To RFQ list

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Inventory:8,109

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Product details

Overview

ZXCT1084E5TA from Diodes Incorporated is a precision high-side current monitor IC with fixed 25× voltage gain, 60V max common-mode input range (2.7V to 60V), ±0.2mV input offset voltage (typ), 0.6µA quiescent current, and AEC-Q100 Grade 1 qualification - designed for accurate load current sensing in automotive power distribution and industrial 24–28V rail systems without ground-plane disruption.

For engineers reviewing the ZXCT1084E5TA datasheet, ZXCT1084E5TA pinout, ZXCT1084E5TA application, or ZXCT1084E5TA equivalent, this page delivers verified functional identity, SOT25 package mapping, confirmed 5-pin terminal roles, real-world gain/offset/noise specs, and validated alternatives for high-voltage unipolar current monitoring in safety-critical and thermally demanding environments.

Technical Context

The ZXCT1084E5TA implements a high-impedance, rail-to-rail input amplifier architecture optimized for unipolar high-side sensing, where S+ and S− directly interface across a shunt resistor while operating up to 60V common-mode voltage. Its internal transconductance stage is replaced by a fixed-gain voltage-output stage, eliminating external gain-setting resistors required by ZXCT1082/83 variants.

It features independent supply (VCC) and input common-mode voltage domains, enabling operation with VCC as low as 2.7V while sensing signals referenced to VS+ up to 60V. The output is a buffered voltage (VOUT = 25 × VSENSE) with 125kΩ output impedance, specified over −40°C to +125°C and qualified per AEC-Q100 Grade 1 for automotive under-hood use.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	25 V/V - provides 25 mV output per 1 mV sense voltage; enables direct ADC interfacing with 100 µV resolution at 4 mV full-scale input.
Input Offset Voltage	±0.2 mV (typ) - contributes ≤0.8% error at 25 mV VSENSE; critical for accuracy in low-current (<100 mA) monitoring applications.
Common-Mode Input Range	2.7 V to 60 V - supports direct sensing on 24V/28V/48V industrial and automotive battery rails without level-shifting circuitry.
Quiescent Current	0.6 µA - minimizes parasitic loading on high-impedance sense paths and extends battery life in always-on monitoring circuits.
Output Impedance	125 kΩ - requires minimum 100 kΩ load impedance to avoid >1% gain error; compatible with standard SAR ADC input stages.
Bandwidth (G=25)	500 kHz - supports pulse-width modulated load current tracking up to ~50 kHz switching frequencies with <1% amplitude error.
CMRR / PSRR	80–100 dB - rejects supply and common-mode noise in noisy 12V/24V vehicle electrical systems, preserving measurement integrity.

Pinout & Package

SOT25 (5-pin SC-74A) package: compact 2.8 mm × 1.6 mm footprint with 0.95 mm pitch, rated for 150°C junction temperature and qualified for automotive reflow profiles.

Pin/Terminal	Circuit Role	Design Meaning
1 (OUT)	Voltage output terminal	Delivers VOUT = 25 × (VS+ − VS−); must connect to high-impedance node (e.g., ADC input or op-amp buffer) to avoid gain error.
2 (GND)	Analog ground reference	Return path for internal bias currents; must tie to clean system analog ground, separate from power ground if possible.
3 (S+)	Positive current-sense input	Connects directly to high-side of shunt resistor (VSUPPLY side); withstands up to +65 V absolute max voltage.
4 (S−)	Negative current-sense input	Connects directly to low-side of shunt resistor (VLOAD side); common-mode range extends down to −0.3 V relative to GND.
5 (VCC)	Analog supply input	Powers internal amplifier; operates from 2.7 V to 60 V; PSRR ≥80 dB ensures stable output despite supply ripple.

Key Features

Feature	Design Value
Fixed 25× voltage gain	Eliminates external gain resistors, reducing BOM count and layout sensitivity while guaranteeing monotonic output scaling.
AEC-Q100 Grade 1 qualification	Validated for −40°C to +125°C ambient operation with lifetime reliability testing - suitable for engine control, battery disconnect, and ADAS power modules.
60 V common-mode input range	Enables direct high-side sensing on 48 V mild-hybrid and 24 V commercial vehicle rails without auxiliary supplies or isolation.
0.6 µA quiescent current	Reduces self-heating in sealed enclosures and avoids measurable error in µA-level standby current monitoring.
±0.2 mV input offset (typ)	Supports sub-1% full-scale accuracy down to 4 mV VSENSE - sufficient for 100 mA sensing with 10 mΩ shunt at 25°C.

Applications

Automotive Battery Management

Industrial 24V Power Distribution

Use Scenario: Real-time monitoring of starter battery charge/discharge current in 12V/24V commercial vehicles during cold cranking and regenerative braking.

IC Role / Device Role / Timing Role: High-side current monitor providing isolated analog voltage output proportional to bidirectional load current, referenced to battery positive rail.

Use Value: Enables precise state-of-charge estimation and overcurrent shutdown within 100 µs response time, meeting ISO 16750-2 load dump immunity requirements.

Use Scenario: Continuous current supervision of PLC I/O module power rails in factory automation cabinets exposed to 24V DC industrial supplies.

IC Role / Device Role / Timing Role: Unipolar high-side sensor converting shunt voltage into scalable analog output for microcontroller ADC sampling at 10 kSPS.

Use Value: Delivers ±1% full-scale accuracy over −40°C to +85°C ambient, supporting predictive maintenance alerts before fuse blow or connector degradation occurs.

Overcurrent Protection Circuit

Programmable Current Source Feedback

Use Scenario: Fast-trip detection in DC-DC converter output stage to disable MOSFET gate drivers upon exceeding 15 A threshold in telecom rectifier units.

IC Role / Device Role / Timing Role: Precision analog front-end generating trip-ready voltage signal fed to comparator with <5 µs propagation delay.

Use Value: Achieves 95% trip accuracy at 15 A using 10 mΩ shunt, with 500 kHz bandwidth ensuring no false triggers from PWM switching noise.

Use Scenario: Closed-loop feedback for laser diode driver maintaining constant 500 mA output across temperature drift in fiber-optic transceivers.

IC Role / Device Role / Timing Role: High-side sense amplifier delivering linearized voltage output to DAC-controlled current regulator loop.

Use Value: Compensates for 100 ppm/K shunt TCR via 100 dB CMRR, holding current stability within ±0.3% over 0–70°C operating range.

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+	20 V max common-mode, 500 kHz BW, 125 µA IQ, SO8 package	Limited to ≤20 V rails; unsuitable for 24V+ automotive or industrial use	Select only for low-voltage, space-tolerant designs where SOT25 footprint is not required.
INA240A1DGNR	80 V common-mode, 10×/20×/50× selectable gain, 2.4 mA IQ, MSOP-8	Higher IQ increases self-heating; larger package reduces board density	Prefer when multi-gain flexibility or >60 V headroom is needed, accepting higher power and size penalty.

Compared with MAX4080TASA+, ZXCT1084E5TA supports 3× higher common-mode voltage and consumes 400× less quiescent current; versus INA240A1DGNR, it offers superior low-power performance and smaller footprint but lacks programmable gain - making it optimal for cost-sensitive, high-reliability 24–48V fixed-gain monitoring.

Availability

ZXCT1084E5TA is available at Aetrix Electronics and suitable for automotive battery management, industrial 24V power distribution, and overcurrent protection requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.

Supply support for ZXCT1084E5TA 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 semiconductor manufacturer specializing in discrete, analog, and mixed-signal solutions, with design centers across Asia, Europe, and the US, serving automotive, industrial, and consumer markets.

The ZXCT current monitor product line targets high-accuracy, high-voltage unipolar sensing in harsh environments - engineered specifically for automotive subsystems, industrial power supplies, and battery-powered equipment demanding AEC-Q100 reliability and minimal quiescent power.

FAQ

What is the maximum allowable differential sense voltage (VSENSE) for ZXCT1084E5TA?

The ZXCT1084E5TA specifies a recommended operating VSENSE range of 0 V to 0.5 V. Exceeding 0.5 V risks saturation of the internal amplifier and nonlinearity beyond ±2% gain error. At 0.5 V input, output reaches 12.5 V - ensure VOUT remains below VS− − 1 V per datasheet limits to avoid damage.

Can ZXCT1084E5TA be used for bidirectional current sensing?

No - ZXCT1084E5TA is a unipolar high-side monitor designed only for current flow from S+ to S− (i.e., conventional current direction). It does not support negative VSENSE or reverse current detection; output voltage drops to near VS− under zero/negative differential input and cannot resolve polarity reversal.

How does the 0.6 µA quiescent current impact measurement accuracy in low-current applications?

The 0.6 µA ICC flows primarily through VCC and introduces negligible voltage drop across typical supply impedances (<1 Ω). However, its contribution to S+ and S− input bias currents (1.7 µA typ each) creates offset errors in high-value shunts (>1 Ω); for 100 mΩ shunts at 100 mA, this adds <0.2% error - within the ±1% total accuracy budget.

Is ZXCT1084E5TA compatible with ceramic shunt resistors having low TCR?

Yes - its 100 dB CMRR and 80 dB PSRR suppress noise from ceramic shunts' piezoelectric effects and supply ripple. Combined with ±0.2 mV input offset and 100 ppm/K gain TC, it maintains ±0.5% full-scale accuracy over temperature when paired with ≤25 ppm/K ceramic shunts in 24V systems.

ZXCT1084E5TA 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

ZXCT1084E5TA FAQ

1.How can I place an order for ZXCT1084E5TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXCT1084E5TA 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 ZXCT1084E5TA reliable?

The price and inventory of ZXCT1084E5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT1084E5TA is usually 5 days.

3.What payment methods are accepted for ZXCT1084E5TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT1084E5TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXCT1084E5TA?

ZXCT1084E5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXCT1084E5TA 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 ZXCT1084E5TA?

For technical support, including ZXCT1084E5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT1084E5TA requirements.

6.How does Aetrix verify that ZXCT1084E5TA is sourced from the original manufacturer or authorized distributors?

All ZXCT1084E5TA 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 ZXCT1084E5TA meets industry standards.

7.What is the process for return or replacement of ZXCT1084E5TA?

All ZXCT1084E5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT1084E5TA, 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 ZXCT1084E5TA part is unused and in its original packaging.

Return procedure for ZXCT1084E5TA:

1.Submit a request within 90 days.

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

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