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

Diodes Incorporated ZXCT1084QE5TA

Name: ZXCT1084QE5TA
Brand: Diodes Incorporated
SKU: ZXCT1084QE5TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZXCT1084QE5TA

Manufacturer:: Diodes Incorporated

Category:: Current Regulation/Management

Package:: SC-74A, SOT-753

Datasheet:: ZXCT1084QE5TA.pdf

Description:: IC CURRENT MONITOR SOT25

Quantity:: RFQ Add To RFQ list

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Product details

Overview

ZXCT1084QE5TA from Diodes Incorporated is an automotive-grade, fixed-gain, high-side current monitor IC in SOT25 package, delivering 25× voltage output gain (V_OUT = 25 × V_SENSE) with 60 V max common-mode input range, ±0.2 mV input offset voltage, and 0.6 µA quiescent current - enabling precision battery current sensing in 12 V/24 V automotive power distribution systems.

For engineers reviewing the ZXCT1084QE5TA datasheet, ZXCT1084QE5TA pinout, ZXCT1084QE5TA application, or ZXCT1084QE5TA equivalent, this device supports AEC-Q100 Grade 1 qualification, operates from −40°C to +125°C, provides 500 kHz small-signal bandwidth at G = 25, and maintains <±1% gain error across temperature - critical for battery management, overcurrent protection, and ECU load monitoring in harsh automotive environments.

Technical Context

The ZXCT1084QE5TA implements a precision current-to-voltage conversion architecture optimized for unipolar high-side sensing, where differential input voltage (V_SENSE = V_S+ − V_S−) is amplified by a fixed 25× gain without external gain-setting resistors. Its rail-to-rail output stage delivers V_OUT referenced to V_S−, supporting operation down to V_S− − 1 V.

It features independent supply (V_CC) and common-mode input (V_S+/V_S−) domains, enabling direct connection to loads operating up to 60 V while powered from a lower 2.7–60 V V_CC. Input bias currents remain ≤1.7 µA (typ) across −40°C to +125°C, minimizing sense resistor error.

Key Specifications

Parameter	Value and Actual Design Meaning
Gain	Fixed 25× voltage output (V_OUT = 25 × V_SENSE) - eliminates external gain resistors, reduces BOM count and layout sensitivity.
Common-Mode Input Range	2.7 V to 60 V - supports direct sensing on 12 V/24 V/48 V automotive rails without level-shifting.
Input Offset Voltage	±0.2 mV (typ) at 25°C - enables accurate detection of sub-100 mV sense voltages (e.g., 10 mΩ shunt @ 20 A = 200 mV).
Quiescent Current	0.6 µA (typ) - minimizes parasitic loading on V_CC supply and preserves system efficiency in always-on modules.
Small-Signal Bandwidth	500 kHz at G = 25 - sufficient for fast transient current events (e.g., solenoid actuation, motor startup).
Operating Temperature	−40°C to +125°C - qualified for under-hood and powertrain applications per AEC-Q100 Grade 1.
PSRR / CMRR	≥80 dB (typ) - rejects supply ripple and common-mode noise in noisy automotive electrical environments.

Pinout & Package

SOT25 (5-pin SC-74A) package with exposed pad for thermal performance; RoHS-compliant, halogen-free, lead-free construction.

Pin/Terminal	Circuit Role	Design Meaning
1: OUT	Voltage output terminal	Delivers amplified V_SENSE × 25; output swings from V_S− − 1 V to V_S− − 0.8 V - compatible with downstream ADCs or comparators referenced to load ground.
2: GND	Analog ground reference	Internal circuit return node; must be connected to system ground plane with low-impedance path to minimize noise coupling.
3: S+	Positive current sense input	Connects directly to VSUPPLY side of shunt resistor; supports up to 60 V common-mode voltage - no ground disruption required.
4: S−	Negative current sense input	Connects directly to VLOAD side of shunt resistor; completes differential sense path with S+ - enables true high-side measurement.
5: V_CC	Analog supply input	Power source for internal amplifier; operates independently from S+/S− domain (2.7–60 V range), allowing flexible supply sourcing.

Key Features

Feature	Design Value
AEC-Q100 Grade 1 qualification	Validated for automotive use with PPAP support - ensures reliability in safety-critical power monitoring applications.
Fixed 25× gain architecture	Removes need for external gain resistors - improves accuracy consistency, reduces PCB area, and eliminates resistor tolerance drift effects.
Ultra-low quiescent current	0.6 µA typical - enables integration into always-on vehicle subsystems (e.g., battery disconnect units) without measurable standby drain.
High common-mode rejection	≥80 dB CMRR across 0.1 Hz–100 kHz - suppresses noise from alternator ripple, ignition transients, and switching regulators.
Rail-to-rail output swing	V_OUT = V_S− − 1 V min - allows full-scale utilization of 12-bit/16-bit ADCs referenced to load ground, maximizing dynamic range.

Applications

Automotive Battery Management

Engine Control Unit (ECU) Load Monitoring

Use Scenario: Real-time monitoring of starter battery charge/discharge current in 12 V systems with stop-start functionality.

IC Role / Device Role / Timing Role: High-side current monitor providing isolated V_OUT proportional to shunt voltage, interfaced to microcontroller ADC.

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

Use Scenario: Continuous current measurement of fuel injector or ignition coil drivers in gasoline/diesel ECUs.

IC Role / Device Role / Timing Role: Unipolar high-side sensor converting load current to voltage signal for fault detection and closed-loop control.

Use Value: Delivers <±1% gain error over −40°C to +125°C, ensuring consistent injector timing calibration across ambient conditions.

Electric Power Steering (EPS) Motor Protection

Body Control Module (BCM) Fuseless Overcurrent Detection

Use Scenario: Monitoring phase current in 24 V EPS motor drivers to trigger immediate shutdown during short-circuit events.

IC Role / Device Role / Timing Role: Fast-response current monitor feeding comparator or MCU interrupt pin for <5 µs fault detection latency.

Use Value: 500 kHz bandwidth and 5 µs settling time enable reliable detection of >100 A surge currents before MOSFET destruction.

Use Scenario: Replacing mechanical fuses with electronic overcurrent protection in BCM power distribution networks.

IC Role / Device Role / Timing Role: High-side current sensor feeding digital controller that disables load switches upon threshold violation.

Use Value: 0.6 µA quiescent current and AEC-Q100 qualification allow permanent installation in always-on BCM domains without compromising battery life.

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+	Fixed 20× gain, 76 V common-mode range, 1.5 µA I_Q, SO8 package	Higher voltage rating but larger footprint and higher quiescent current - less suitable for space-constrained, ultra-low-power modules	Select when >60 V common-mode margin is required and board area permits SO8 layout.
INA240A1QDRQ1	Fixed 20× gain, 80 V common-mode, 2.4 mA I_Q, SO8 package, integrated EMI filtering	Higher power consumption and larger package; superior EMI rejection but over-specified for basic automotive current sensing	Prefer for high-noise environments (e.g., near inverters) where EMI robustness outweighs quiescent current penalty.

Compared with MAX4080TASA+ and INA240A1QDRQ1, ZXCT1084QE5TA offers the lowest quiescent current (0.6 µA vs. ≥1.5 µA), smallest footprint (SOT25 vs. SO8), and optimal gain match for 10–100 mV shunt signals - making it ideal for cost-sensitive, space-constrained automotive modules requiring long-term battery preservation.

Availability

ZXCT1084QE5TA is available at Aetrix Electronics and suitable for automotive battery management, engine control unit (ECU) load monitoring, electric power steering (EPS) motor protection, and body control module (BCM) fuseless overcurrent detection requiring stable component supply across extended temperature and automotive qualification cycles.

Supply support for ZXCT1084QE5TA 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 components for automotive, industrial, and computing markets.

ZXCT1084QE5TA belongs to Diodes' automotive-qualified high-side current monitor product line, designed specifically for precision, low-power, high-voltage current sensing in AEC-Q100-compliant vehicle subsystems.

FAQ

What is the maximum common-mode voltage supported by ZXCT1084QE5TA?

ZXCT1084QE5TA supports a maximum common-mode input voltage of 60 V on both S+ and S− pins, verified per Absolute Maximum Ratings (DS37015 Rev. 1–2, p.2). This enables direct connection to 24 V and 48 V automotive rails without attenuation or level-shifting circuits.

Does ZXCT1084QE5TA require external gain-setting resistors?

No. ZXCT1084QE5TA integrates a fixed 25× voltage gain amplifier, eliminating the need for external gain resistors. This is confirmed in the device description (p.1) and pin function table (p.2), distinguishing it from the adjustable-gain ZXCT1082Q/1083Q variants.

Is ZXCT1084QE5TA qualified for automotive use?

Yes. ZXCT1084QE5TA is AEC-Q100 Grade 1 qualified (−40°C to +125°C), PPAP-capable, and explicitly designated "Automotive Grade" in the Ordering Information table (p.12) and Features list (p.1). It meets all stress test requirements for automotive powertrain and chassis applications.

What is the output voltage range relative to S−?

ZXCT1084QE5TA delivers V_OUT referenced to S−, with a specified output swing of V_S− − 1 V minimum to V_S− − 0.8 V maximum (Electrical Characteristics, p.3). This rail-to-rail capability ensures compatibility with ADCs or comparators tied to the load-side ground reference.

ZXCT1084QE5TA 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

ZXCT1084QE5TA FAQ

1.How can I place an order for ZXCT1084QE5TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZXCT1084QE5TA 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 ZXCT1084QE5TA reliable?

The price and inventory of ZXCT1084QE5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT1084QE5TA is usually 5 days.

3.What payment methods are accepted for ZXCT1084QE5TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT1084QE5TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZXCT1084QE5TA?

ZXCT1084QE5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZXCT1084QE5TA 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 ZXCT1084QE5TA?

For technical support, including ZXCT1084QE5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT1084QE5TA requirements.

6.How does Aetrix verify that ZXCT1084QE5TA is sourced from the original manufacturer or authorized distributors?

All ZXCT1084QE5TA 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 ZXCT1084QE5TA meets industry standards.

7.What is the process for return or replacement of ZXCT1084QE5TA?

All ZXCT1084QE5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT1084QE5TA, 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 ZXCT1084QE5TA part is unused and in its original packaging.

Return procedure for ZXCT1084QE5TA:

1.Submit a request within 90 days.

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

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