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Diodes Incorporated ZXCT1010E5TA
- Part No.:
- ZXCT1010E5TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Current Regulation/Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ZXCT1010E5TA.pdf
- Description:
- IC CURRENT MONITOR 1% SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:41,237
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Product details
Overview
ZXCT1010E5TA from Diodes Incorporated is a high-side current sense monitor IC designed for precision load current measurement without ground-plane disruption. It delivers 1% typical accuracy, supports 2.5V–20V supply range, features 3.5µA quiescent current and 300nA typical output offset, and is deployed in battery chargers and smart battery packs.
For engineers reviewing the ZXCT1010E5TA datasheet, ZXCT1010E5TA pinout, ZXCT1010E5TA application, or ZXCT1010E5TA equivalent, key selection criteria include sense voltage linearity up to 2500mV, transconductance of 10,000 µA/V, bi-directional sensing capability with dual-device configuration, and SOT25 package compatibility with portable power systems.
Technical Context
The ZXCT1010E5TA operates as a transconductance-based high-side current monitor, converting differential sense voltage (VSENSE+ − VSENSE−) into a proportional output current (IOUT) with GM = 10,000 µA/V. Its architecture eliminates ground-path interference and enables accurate sensing down to 10mV input.
It functions across a wide supply range (2.5V–20V), maintains low quiescent current (3.5µA typ), and achieves ±2.5% total accuracy over temperature while supporting bi-directional current detection via dual-device topology with independent output resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 20V - supports wide-input industrial and battery-powered systems without external regulation |
| Sense Voltage Range | 0 to 2500 mV - enables precise monitoring from microamp-level loads up to high-current applications |
| Transconductance (GM) | 10,000 µA/V - provides stable 10mA/V scaling for direct interface with ADCs or op-amps |
| Accuracy | ±2.5% max - specified at RSENSE = 0.1Ω and VSENSE = 200mV, ensuring reliable BOM tolerance margin |
| Quiescent Current | 3.5 µA typ - minimizes standby power loss in always-on battery management circuits |
| Output Offset Current | 300 nA typ - reduces error contribution below 10mV sense voltage, critical for low-current detection |
| Bandwidth | 300 kHz (at 10mV DC input) - sufficient for PWM-controlled motor and charger loop response |
Pinout & Package
The ZXCT1010E5TA is housed in a lead-free, RoHS-compliant SOT25 (SC-74A) surface-mount package measuring 3.0mm × 1.6mm × 1.1mm (H×W×D), optimized for space-constrained portable designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (NC) | No connection | Unused terminal; must remain unconnected to avoid parasitic coupling or ESD path disruption |
| 2 (GND) | Ground reference | Return path for internal biasing; requires low-impedance PCB connection to minimize offset drift |
| 3 (IOUT) | Current output | Proportional output current sink; connects to ROUT to generate scaled voltage for ADC or comparator |
| 4 (VSENSE−) | Negative sense input | Reference node tied to system supply rail; forms differential pair with VSENSE+ for high-side placement |
| 5 (VSENSE+) | Positive sense input | Connected to load side of shunt; measures voltage drop across RSENSE without breaking ground return |
Key Features
| Feature | Design Value |
|---|---|
| High-side sensing architecture | Enables current monitoring without ground-loop interruption-critical for isolated battery and motor control topologies |
| 10,000 µA/V transconductance | Delivers predictable 10mV/mA scaling, simplifying analog front-end design and eliminating need for gain-stage calibration |
| 2.5V minimum supply voltage | Supports operation directly from single-cell Li-ion (2.7–4.2V) or coin-cell sources without LDO pre-regulation |
| Bi-directional current support (dual-device) | Allows full-range current direction detection using two ZXCT1010E5TAs with opposing sense connections and separate ROUT paths |
| PCB trace shunt compatibility | Validated for use with copper-trace resistors (e.g., 25mm × 0.25mm, ~150mΩ), reducing BOM count and cost in high-volume consumer designs |
Applications
| Battery Charger Monitoring | Smart Battery Pack Protection |
|---|---|
Use Scenario: Real-time charge/discharge current tracking in multi-cell Li-ion charging circuits, such as those using bq2954 ICs. IC Role / Device Role / Timing Role: High-side current monitor providing feedback to charge management IC for CC/CV termination and thermal derating. Use Value: Enables ±2.5% accurate current reporting at 1.25A load with <3.5µA supply draw-extending runtime and improving safety compliance. | Use Scenario: Integrated current sensing within portable device battery packs for fuel gauging and overcurrent cutoff. IC Role / Device Role / Timing Role: Precision analog current-to-voltage converter interfaced to microcontroller ADC for state-of-charge estimation. Use Value: Delivers sub-10mV resolution at 100mA load using standard 0.1Ω shunt, meeting JEITA battery safety thresholds. |
| DC Motor Control Feedback | Programmable Current Source Calibration |
Use Scenario: Closed-loop current regulation in brushed DC motor drivers for robotics and power tools. IC Role / Device Role / Timing Role: High-bandwidth (300kHz) current sensor feeding PWM controller to maintain torque consistency under variable load. Use Value: Maintains linear response up to 2.5V sense voltage, enabling 25A motor current monitoring with 0.1Ω shunt and minimal thermal drift. | Use Scenario: Precision current setting in programmable lab power supplies and LED driver reference stages. IC Role / Device Role / Timing Role: Transconductance-based current reference generator with externally set ROUT for stable output current programming. Use Value: Achieves <0.1% output variation over 2.5–20V supply range-supporting Class II metrology-grade current source designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-side current monitor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4080TASA+ | Higher supply voltage (76V), higher quiescent current (60µA), fixed 20V/V gain | Targeted at industrial 24/48V bus monitoring; not suitable for sub-3V battery systems | Select when >20V bus operation or fixed-gain voltage output is required |
| INA219AIDR | I²C digital output, integrated ADC, 26V max common-mode, 0.1% gain error | Requires MCU I²C interface; adds firmware overhead but eliminates external signal conditioning | Select when digital integration, auto-ranging, or energy monitoring (power/voltage/current) is needed |
Compared with MAX4080TASA+ and INA219AIDR, the ZXCT1010E5TA offers lowest quiescent current (3.5µA), widest low-voltage operability (2.5V), and analog simplicity-making it optimal for ultra-low-power, cost-sensitive, high-side analog current sensing where digital interfaces or high-voltage tolerance are unnecessary.
Availability
ZXCT1010E5TA is available at Aetrix Electronics and suitable for battery chargers, smart battery packs, DC motor control, and programmable current source designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ZXCT1010E5TA 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-efficiency power management, signal integrity, and protection solutions for consumer, industrial, and automotive markets.
The ZXCT1010E5TA belongs to Diodes' precision analog monitor product line, engineered specifically for high-side current sensing in portable and battery-critical systems where ground isolation, low power, and accuracy are mandatory.
FAQ
What is the maximum sense voltage the ZXCT1010E5TA can accurately measure?
The ZXCT1010E5TA supports a maximum differential sense voltage (VSENSE) of 2500 mV, defined as VSENSE+ − VSENSE−. This allows accurate current measurement across shunts up to 2.5Ω at 1A or 0.1Ω at 25A. Operation beyond this limit risks nonlinearity and potential damage per absolute maximum ratings.
Can the ZXCT1010E5TA be used for bidirectional current sensing in a single-package solution?
No-the ZXCT1010E5TA is unidirectional by design. Bidirectional sensing requires two devices configured in opposing polarity with separate output resistors, as documented in the datasheet's Application Information section. Each device activates only when its respective sense input is more positive.
Is the NC pin (Pin 1) required to be left floating, or can it be grounded?
Pin 1 is internally unconnected and must remain unconnected (floating). Grounding or routing it to any potential introduces risk of parasitic capacitance, noise coupling, or ESD path disruption. The datasheet explicitly defines it as "No connection" and shows no internal bond wire.
How does the ZXCT1010E5TA handle temperature-induced errors in shunt resistance?
The ZXCT1010E5TA itself has negligible temperature coefficient on transconductance (<50 ppm/°C), but system-level accuracy depends on shunt stability. The datasheet recommends PCB copper traces (e.g., 25mm × 0.25mm, 1oz Cu) because their positive temperature coefficient (PTC) compensates for the device's slight negative TC-achieving net <0.01%/°C system drift.
ZXCT1010E5TA 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:
- ±1%
- Voltage - Input:
- 2.5V ~ 20V
- Current - Output:
- 10mA
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
ZXCT1010E5TA FAQ
1.How can I place an order for ZXCT1010E5TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCT1010E5TA 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 ZXCT1010E5TA reliable?
The price and inventory of ZXCT1010E5TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT1010E5TA is usually 5 days.
3.What payment methods are accepted for ZXCT1010E5TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT1010E5TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCT1010E5TA?
ZXCT1010E5TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCT1010E5TA 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 ZXCT1010E5TA?
For technical support, including ZXCT1010E5TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT1010E5TA requirements.
6.How does Aetrix verify that ZXCT1010E5TA is sourced from the original manufacturer or authorized distributors?
All ZXCT1010E5TA 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 ZXCT1010E5TA meets industry standards.
7.What is the process for return or replacement of ZXCT1010E5TA?
All ZXCT1010E5TA units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT1010E5TA, 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 ZXCT1010E5TA part is unused and in its original packaging.
Return procedure for ZXCT1010E5TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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