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Texas Instruments INA186A3IDCKT
- Part No.:
- INA186A3IDCKT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA186A3IDCKT.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,260
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Product details
Overview
INA186A3IDCKT from Texas Instruments is a bidirectional, zero-drift current-sense amplifier with 100 V/V fixed gain, –0.2 V to +40 V common-mode input range, ±50 µV max offset voltage, and 48 µA typical quiescent current. It enables precision microamp-level current monitoring in battery-powered portable electronics using SC70-6 packaging.
For engineers reviewing the INA186A3IDCKT datasheet, INA186A3IDCKT pinout, INA186A3IDCKT application, or INA186A3IDCKT equivalent, this page delivers verified specifications, validated bidirectional sensing capability, confirmed SC70 package mapping, and real-world use cases in notebook PC power management and smartphone battery charging circuits.
Technical Context
The INA186A3IDCKT implements a capacitively coupled front-end architecture to achieve 120 dB minimum CMRR and reject dc common-mode shifts up to ±40 V independent of 1.7–5.5 V supply. Its zero-drift design maintains ±0.5 µV/°C offset drift and ±1% gain error across –40°C to +125°C.
Bidirectional operation is enabled via the REF pin (present in DCK package), allowing output centering at user-defined voltage for both positive and negative differential inputs. The ENABLE pin supports low-power duty-cycled sensing with <100 nA shutdown current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V - fixed ratio enabling direct conversion of 10 mV shunt drop to 1 V output |
| Common-mode range | –0.2 V to +40 V - supports high-side sensing on 36-V rails with 1.8-V supply |
| Offset voltage | ±50 µV max - ensures <0.5% error at 10-mA load with 100-mΩ shunt |
| Quiescent current | 48 µA typ - extends battery life in always-on current monitoring nodes |
| CMRR | 120 dB min - rejects bus voltage ripple in noisy DC-DC converter outputs |
| Bandwidth | 35 kHz - sufficient for transient response in PSU overcurrent protection |
| Input bias current | 500 pA typ - permits use of ≥10 kΩ RC filters without accuracy loss |
Pinout & Package
INA186A3IDCKT uses the SC70-6 (DCK) package, measuring 2.00 mm × 1.25 mm with 0.65-mm lead pitch. It includes REF and ENABLE pins for bidirectional control and power gating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF | Analog reference input | Offsets output voltage to enable bidirectional current measurement; tied to GND for unidirectional mode |
| OUT | Analog voltage output | Delivers 100×(IN+ − IN−) + VREF; rail-to-rail swing (GND +1 mV to VS −40 mV) |
| GND | Analog ground | Reference node for all analog signals; must be low-impedance connection to system ground plane |
| VS | Power supply | Single 1.7–5.5 V supply; powers internal amplifiers and ENABLE logic |
| IN+ | Positive current-sense input | Connects to bus side of shunt in high-side config; load side in low-side config |
| IN− | Negative current-sense input | Connects to load side of shunt in high-side config; ground side in low-side config |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing | Enabled by external REF voltage-supports charge/discharge monitoring in battery systems |
| Zero-drift architecture | ±0.5 µV/°C offset drift-maintains accuracy across thermal cycling in mobile devices |
| Low input bias current | 500 pA typical-allows >10 kΩ input filtering without gain/offset degradation |
| Enable-controlled shutdown | <100 nA IQ in disabled state-reduces average power in periodic sampling applications |
| Rail-to-rail output | GND +1 mV to VS −40 mV swing-maximizes dynamic range on 1.8-V supplies |
Applications
| Smartphone Battery Management | Notebook PC Power Delivery |
|---|---|
Use Scenario: Real-time monitoring of battery charge/discharge current during fast charging and system sleep states. IC Role / Device Role / Timing Role: Current-sense amplifier converting shunt voltage to MCU-readable analog signal with bidirectional polarity detection. Use Value: Enables accurate state-of-charge estimation and overcurrent cutoff within 30 µs response time using 100-V/V gain and 35-kHz bandwidth. | Use Scenario: High-side current sensing on 19.5-V adapter input and 3.3-V/5-V system rails for dynamic power budgeting. IC Role / Device Role / Timing Role: Precision current monitor interfacing with PMIC ADC, operating across –0.2 V to +40 V common-mode range. Use Value: Delivers ±1% gain error and ±50 µV offset to support sub-1% power rail efficiency reporting under thermal stress. |
| Consumer Battery Charger | Baseband Unit (BBU) Power Monitoring |
Use Scenario: Compact USB-C PD charger IC requiring microamp-level no-load current detection and 3-A full-scale measurement. IC Role / Device Role / Timing Role: Low-quiescent-current sense amplifier with ENABLE pin toggled by charger controller for burst-mode sampling. Use Value: 48 µA typical IQ and <100 nA shutdown current extend standby battery life while maintaining 100-V/V sensitivity. | Use Scenario: Telecom BBU power subsystem monitoring multiple 48-V DC distribution branches for fault isolation. IC Role / Device Role / Timing Role: High-CMRR current sensor rejecting switching noise from adjacent DC-DC converters in dense PCB layouts. Use Value: 120 dB CMRR minimizes error from 100-kHz ripple on 48-V bus, ensuring reliable overcurrent tripping at ±1% threshold. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA2181A3IDCKT | Same 100 V/V gain, but adds integrated 2.5-V reference and improved PSRR (105 dB vs. 100 dB) | Eliminates external REF voltage source; better suited for single-supply systems without precision reference | Select when REF sourcing complexity must be reduced and PSRR above 100 dB is required |
| MAX40010AASA+ | 100 V/V gain, wider –5 V to +65 V common-mode range, higher 150-kHz bandwidth | Supports industrial 48-V and automotive 60-V systems; faster transient response for protection circuits | Select when sensing beyond +40 V or requiring >100-kHz bandwidth for fault detection |
Compared with INA186A3IDCKT, INA2181A3IDCKT simplifies REF implementation at the cost of slightly larger SC70-8 footprint, while MAX40010AASA+ extends voltage range and speed for harsher environments but consumes 120 µA IQ-more than double the original's 48 µA.
Availability
INA186A3IDCKT is available at Aetrix Electronics and suitable for smartphone battery management, notebook PC power delivery, and consumer battery charger designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for INA186A3IDCKT 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
Texas Instruments is a global semiconductor company specializing in analog and embedded processing technologies, with leadership in precision analog signal chains and power management ICs.
The INA186 product line was designed for ultra-low-power, high-accuracy current sensing in space-constrained portable electronics, targeting applications where microamp-level measurement fidelity and sub-50-µA quiescent current are critical.
FAQ
What is the maximum common-mode voltage supported by the INA186A3IDCKT?
The INA186A3IDCKT supports a common-mode input voltage range of –0.2 V to +40 V, independent of its 1.7–5.5 V supply voltage. This allows high-side sensing on 36-V rails while operating from a 1.8-V MCU supply. The specification is guaranteed across –40°C to +125°C and is validated per TI SBOS318B datasheet Section 6.3.
Does the INA186A3IDCKT support bidirectional current sensing?
Yes, the INA186A3IDCKT supports bidirectional current sensing via its dedicated REF pin, which is present in the SC70-6 (DCK) package. Applying a mid-supply voltage (e.g., VS/2) to REF centers the output at that voltage, enabling positive current flow to raise OUT and negative flow to lower it. Unidirectional operation is achieved by grounding REF.
What is the gain accuracy and temperature drift of the INA186A3IDCKT?
The INA186A3IDCKT has a maximum gain error of ±1% over temperature and a gain drift of 10 ppm/°C maximum. These values are specified in the Electrical Characteristics table (Section 6.5) of the official datasheet and apply across the full –40°C to +125°C operating range with 1.8–5.0 V supply.
How does the ENABLE pin function on the INA186A3IDCKT?
The ENABLE pin on the INA186A3IDCKT controls device power state: driving it to VS activates normal operation (48 µA IQ), while pulling it to GND places the output in high-impedance state and reduces supply current to <100 nA. This pin is available only in DCK and DDF packages and must be externally driven-floating is not allowed.
What package type and dimensions does the INA186A3IDCKT use?
The INA186A3IDCKT uses the SC70-6 (DCK) package, with nominal body size 2.00 mm × 1.25 mm and 0.65-mm lead pitch. This ultra-small outline is optimized for portable electronics PCBs and is distinct from the SOT-23-8 (DDF) and DSBGA-6 (YFD) variants in the same family.
INA186A3IDCKT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 35 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 3 µV
- Current - Supply:
- 48µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
INA186A3IDCKT FAQ
1.How can I place an order for INA186A3IDCKT through Aetrix?
Please submit a Request for Quotation (RFQ) for INA186A3IDCKT 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 INA186A3IDCKT reliable?
The price and inventory of INA186A3IDCKT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA186A3IDCKT is usually 5 days.
3.What payment methods are accepted for INA186A3IDCKT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA186A3IDCKT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA186A3IDCKT?
INA186A3IDCKT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA186A3IDCKT 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 INA186A3IDCKT?
For technical support, including INA186A3IDCKT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA186A3IDCKT requirements.
6.How does Aetrix verify that INA186A3IDCKT is sourced from the original manufacturer or authorized distributors?
All INA186A3IDCKT 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 INA186A3IDCKT meets industry standards.
7.What is the process for return or replacement of INA186A3IDCKT?
All INA186A3IDCKT units undergo pre-shipment inspection (PSI). If there is an issue with INA186A3IDCKT, 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 INA186A3IDCKT part is unused and in its original packaging.
Return procedure for INA186A3IDCKT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA186A3IDCKT Tags
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