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Diodes Incorporated ZXCT180A4W5-7
- Part No.:
- ZXCT180A4W5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Current Regulation/Management
- Package:
- SC-74A, SOT-753
- Datasheet:
-
ZXCT180A4W5-7.pdf
- Description:
- CM VOLTAGE OUTPUT SOT25 T&R 3K
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
ZXCT180A4W5-7 from Diodes Incorporated is a unidirectional current shunt monitor optimized for high-side and low-side sensing in automotive and industrial power systems, featuring 200V/V fixed gain, ±1% max gain error over −40°C to +125°C, 400μV max input offset voltage at 12V common-mode, and rail-to-rail output swing - enabling accurate detection of fault currents in motor drives and solar inverters.
For engineers reviewing the ZXCT180A4W5-7 datasheet, ZXCT180A4W5-7 pinout, ZXCT180A4W5-7 application, or ZXCT180A4W5-7 equivalent, key selection criteria include its 26V common-mode range independent of 2.7–5.5V supply, 85kHz small-signal bandwidth at 200× gain, 2V/μs slew rate, and AEC-Q100 Grade 1 qualification for under-hood automotive use.
Technical Context
The ZXCT180A4W5-7 implements a precision current-sense amplifier topology with input stage capable of operating with analog inputs up to 26V while powered by only 2.7–5.5V - decoupling measurement capability from supply constraints. Its internal resistor network sets fixed 200V/V gain without external components.
It delivers rail-to-rail output (within 20mV of VS and GND) into 10kΩ loads across −40°C to +125°C, with CMRR ≥84dB at 0–26V common-mode and PSRR ≥90dB at 100Hz - ensuring stable performance in noisy 12V/24V bus environments with fast transient response.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Fixed Gain | 200V/V - provides 200mV output per 1mA shunt current; enables direct interface with 3.3V ADCs using 10mΩ shunts |
| Common-Mode Range | −0.3V to 26V - supports high-side sensing on 24V battery rails and low-side sensing near ground, independent of 5V supply |
| Small-Signal Bandwidth | 85kHz - sufficient for detecting fast overcurrent events in BLDC motor commutation and DC-DC converter fault protection |
| Input Offset Voltage | ±400μV max at 12V VCM - limits current measurement error to ≤0.4% at 2A through 10mΩ shunt |
| Quiescent Current | 370μA max - enables always-on monitoring in battery-backed systems without significant drain |
| Gain Error | ±1% max over temperature - ensures consistent scaling across automotive thermal cycles without calibration |
| Slew Rate | 2V/μs - allows full-scale output step (<5V) in <2.5μs, critical for cycle-by-cycle overcurrent limiting |
Pinout & Package
Supplied in a 5-pin SOT25 package (3.0 × 1.6 × 1.1 mm), surface-mountable with JEDEC-standard footprint and matte tin-plated leads compliant with J-STD-020 Level 1 moisture sensitivity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 2) | Reference ground | Return path for internal biasing and output stage; must connect to low-impedance system ground near shunt |
| VS (Pin 5) | Power supply | 2.7–5.5V supply input; bypass capacitor (0.1μF) required between VS and GND for stability |
| IN+ (Pin 3) | High-side sense input | Connects to supply side of shunt; withstands up to 26V regardless of VS state |
| IN− (Pin 4) | Low-side sense input | Connects to load side of shunt; differential input accepts ±28V max across IN+/IN− |
| OUT (Pin 1) | Analog output | Voltage = (ILOAD × RSHUNT) × 200; rail-to-rail swing supports 0.0005V to (VS − 0.02V) output range |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualified | Validated for −40°C to +125°C operation in automotive engine compartments and industrial control cabinets |
| Rail-to-rail output | Enables full utilization of 3.3V or 5V ADC input range without level-shifting circuitry |
| 400kHz bandwidth at 20V/V (A1/B1 variant) | While A4 uses 85kHz, the architecture supports higher bandwidths - confirming robust high-frequency signal integrity |
| ESD protection | 5kV HBM per JESD22-A114 - protects against handling damage during PCB assembly and field service |
| Lead-free & halogen-free | Complies with RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Motor Control | Automotive Battery Monitoring |
|---|---|
|
Use Scenario: Real-time phase current sensing in 3-phase BLDC motor drivers for e-bike controllers and EPS systems. IC Role / Device Role / Timing Role: High-side current monitor feeding analog input of MCU's ADC for torque regulation and overcurrent shutdown. Use Value: 200V/V gain enables sub-10mΩ shunt use, minimizing I²R loss while maintaining 12-bit ADC resolution at 200A peak. |
Use Scenario: Continuous monitoring of starter battery discharge/charge current in 12V vehicle electrical systems. IC Role / Device Role / Timing Role: Low-side current sensor interfacing with body control module (BCM) microcontroller via analog input. Use Value: −0.3V to 26V common-mode range accommodates cold-cranking dips and alternator overvoltage transients without saturation. |
| Solar Inverter DC Link Monitoring | Industrial Power Supply OCP |
|
Use Scenario: Bidirectional current measurement on PV string inputs of string inverters with 1000V DC bus isolation. IC Role / Device Role / Timing Role: Unidirectional high-side monitor placed after isolation barrier to detect ground-fault leakage currents. Use Value: 2V/μs slew rate captures rapid arc-fault rise times (<10μs), triggering shutdown before insulation breakdown. |
Use Scenario: Output current sensing in 48V telecom rectifiers and server PSUs for foldback overcurrent protection. IC Role / Device Role / Timing Role: Low-side monitor feeding comparator or ADC for cycle-by-cycle current limiting in synchronous buck controllers. Use Value: 370μA quiescent current allows integration into always-on supervisor circuits without compromising efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar unidirectional current sensing applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A1QDRQ1 | 20V/V fixed gain, 4V/V min offset drift, 350kHz BW, SOIC-8 package | Lower gain requires larger shunt or post-amplification; wider SOIC footprint increases board area | Select when lower gain and higher bandwidth are preferred over compact SOT25 size and 200× scaling |
| MAX40056ATA+T | 100V/V gain, 1.5μV/°C offset drift, 200kHz BW, 6-pin WLP package | Smaller WLP footprint but no AEC-Q100 qualification; limited to commercial temp range (−40°C to +125°C not guaranteed) | Select for space-constrained consumer applications where automotive qualification is unnecessary |
Compared with INA240A1QDRQ1 and MAX40056ATA+T, the ZXCT180A4W5-7 uniquely combines AEC-Q100 Grade 1 certification, 200V/V gain in SOT25, and 26V common-mode tolerance - making it optimal for automotive motor control where minimal shunt loss and under-hood reliability are mandatory.
Availability
ZXCT180A4W5-7 is available at Aetrix Electronics and suitable for motor control, automotive battery management, solar inverter protection, and industrial power supply overcurrent detection requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ZXCT180A4W5-7 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 power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.
The ZXCT180 series belongs to Diodes' precision current-sensing amplifier product line, engineered specifically for cost-sensitive, high-voltage automotive and industrial applications demanding AEC-Q100 compliance and wide common-mode operation without external gain-setting resistors.
FAQ
What is the maximum common-mode voltage the ZXCT180A4W5-7 can measure?
The ZXCT180A4W5-7 supports a common-mode input voltage range of −0.3V to 26V, independent of its 2.7–5.5V supply voltage. This allows direct high-side sensing on 24V battery rails or low-side sensing near ground without level-shifting circuitry, verified per DS46641 Rev. 1–2 Absolute Maximum Ratings and Recommended Operating Conditions tables.
Does the ZXCT180A4W5-7 require external gain-setting resistors?
No. The ZXCT180A4W5-7 integrates factory-trimmed thin-film resistors to provide a fixed 200V/V gain - eliminating external components, reducing PCB area, and improving temperature stability. This is confirmed in the Pin Assignments and Electrical Characteristics sections of DS46641, which list "ZXCT180A4 / B4 - 200 V/V" under Gain specification.
Is the ZXCT180A4W5-7 qualified for automotive applications?
Yes. All ZXCT180 variants, including ZXCT180A4W5-7, are AEC-Q100 Grade 1 qualified (−40°C to +125°C), with manufacturing in IATF 16949 certified facilities. This is explicitly stated in the Features section and Ordering Information table of DS46641, and supported by Diodes' automotive product definitions page.
What is the output voltage swing capability of the ZXCT180A4W5-7?
The ZXCT180A4W5-7 provides rail-to-rail output swing: minimum VOL = GND + 0.0005V and maximum VOH = VS − 0.02V at −40°C to +125°C with 10kΩ load, per Electrical Characteristics table in DS46641. This enables full utilization of 3.3V or 5V ADC reference ranges without external buffering.
ZXCT180A4W5-7 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
ZXCT180A4W5-7 FAQ
1.How can I place an order for ZXCT180A4W5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ZXCT180A4W5-7 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 ZXCT180A4W5-7 reliable?
The price and inventory of ZXCT180A4W5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZXCT180A4W5-7 is usually 5 days.
3.What payment methods are accepted for ZXCT180A4W5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZXCT180A4W5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZXCT180A4W5-7?
ZXCT180A4W5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZXCT180A4W5-7 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 ZXCT180A4W5-7?
For technical support, including ZXCT180A4W5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZXCT180A4W5-7 requirements.
6.How does Aetrix verify that ZXCT180A4W5-7 is sourced from the original manufacturer or authorized distributors?
All ZXCT180A4W5-7 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 ZXCT180A4W5-7 meets industry standards.
7.What is the process for return or replacement of ZXCT180A4W5-7?
All ZXCT180A4W5-7 units undergo pre-shipment inspection (PSI). If there is an issue with ZXCT180A4W5-7, 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 ZXCT180A4W5-7 part is unused and in its original packaging.
Return procedure for ZXCT180A4W5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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