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Texas Instruments INA180B3QDBVRQ1
- Part No.:
- INA180B3QDBVRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- SC-74A, SOT-753
- Datasheet:
-
INA180B3QDBVRQ1.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:5,382
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Product details
Overview
INA180B3QDBVRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive current-sense amplifier for high- and low-side sensing, featuring 100 V/V fixed gain, –0.2 V to +26 V common-mode input range, ±500 µV max offset at 12 V VCM, 2 V/µs slew rate, and 260 µA max quiescent current. It enables precise battery monitoring and motor control in 12 V/24 V automotive power rails.
For engineers reviewing the INA180B3QDBVRQ1 datasheet, INA180B3QDBVRQ1 pinout, INA180B3QDBVRQ1 application, or INA180B3QDBVRQ1 equivalent, key selection criteria include gain accuracy (±1% max), rail-to-rail output swing, functional safety documentation support, and SOT-23 pinout B compatibility with PCB layout constraints for space-constrained automotive modules.
Technical Context
The INA180B3QDBVRQ1 uses a precision current-sense topology with integrated matched resistor network for 100 V/V gain, enabling accurate measurement of shunt voltage drops independent of supply voltage (2.7–5.5 V). Its input stage supports common-mode voltages up to 26 V - exceeding VS - making it suitable for direct high-side bus monitoring without level-shifting.
It delivers 150 kHz small-signal bandwidth (A3 variant), 2 V/µs slew rate, and 1 µV/°C max offset drift across –40°C to +125°C. The device includes functional safety documentation support and meets HBM ±3 kV / CDM ±1 kV ESD ratings per AEC-Q100.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 100 V/V fixed - eliminates external gain-setting resistors and reduces layout sensitivity to parasitic capacitance. |
| Common-mode range | –0.2 V to +26 V - supports direct sensing on 12 V/24 V automotive buses, including cold-crank and load-dump transients. |
| Offset voltage | ±500 µV max at VCM = 12 V - ensures ≤5 mV error at 50 mV full-scale sense voltage, critical for low-current detection. |
| Bandwidth | 150 kHz - sufficient for PWM motor current reconstruction and fast overcurrent event capture in BLDC drives. |
| Slew rate | 2 V/µs - maintains fidelity during rapid current transients (e.g., short-circuit detection within <1 µs). |
| Quiescent current | 260 µA max - enables always-on battery monitoring without compromising vehicle off-current budgets. |
| Supply voltage | 2.7 V to 5.5 V - compatible with standard automotive LDO outputs and microcontroller I/O domains. |
Pinout & Package
INA180B3QDBVRQ1 is housed in a 5-pin SOT-23 (DBV) package measuring 2.90 mm × 1.60 mm, optimized for high-density automotive PCB layouts and reflow-compatible assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN+ | Positive input - connects to bus-voltage side of shunt in high-side sensing; to load side in low-side sensing. |
| 2 | GND | Analog ground reference - must be tied to system analog ground plane with low-inductance connection. |
| 3 | IN− | Negative input - connects to load side of shunt in high-side sensing; to ground side in low-side sensing. |
| 4 | OUT | Analog output - provides rail-to-rail voltage proportional to sensed current; drives ADC inputs directly. |
| 5 | VS | Power supply - accepts 2.7–5.5 V; requires local 0.1 µF bypass capacitor placed within 2 mm of pin. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C operation with HBM ±3 kV / CDM ±1 kV ESD robustness - meets automotive reliability requirements. |
| Functional safety documentation | Includes FIT rate, failure mode analysis, and diagnostic coverage guidance - accelerates ISO 26262 ASIL-B system certification. |
| Rail-to-rail output swing | Swings to within 30 mV of VS and 0.5 mV of GND - maximizes dynamic range for 12-bit ADC interfacing without external level-shifting. |
| Matched internal gain resistors | Minimizes gain error (±1% max) and temperature drift (≤20 ppm/°C) - eliminates calibration overhead in production test. |
| Low offset drift | 1 µV/°C max - ensures stable zero-current baseline across cabin temperature gradients, reducing software compensation complexity. |
Applications
| Battery Monitoring System | Electric Power Steering (EPS) |
|---|---|
Use Scenario: Real-time monitoring of 12 V lead-acid or Li-ion starter battery health during engine cranking and accessory loads. IC Role / Device Role / Timing Role: High-side current-sense amplifier measuring bidirectional current flow across a 500 µΩ shunt at up to 26 V bus voltage. Use Value: ±500 µV offset enables accurate sub-100 mA current resolution at cold-crank conditions, supporting predictive battery failure alerts. |
Use Scenario: Closed-loop phase current sensing in three-phase BLDC motor driver for torque control and fault detection. IC Role / Device Role / Timing Role: Low-side current-sense amplifier on each motor leg, interfacing with MCU ADC at 10 kHz sampling rate. Use Value: 150 kHz bandwidth and 2 V/µs slew rate ensure faithful capture of PWM-edge current spikes, improving torque ripple suppression. |
| Body Control Module (BCM) | LED Headlamp Driver |
Use Scenario: Load current supervision for HVAC blower, window lift, and seat actuator circuits in centralized BCM architecture. IC Role / Device Role / Timing Role: High-side sensing on switched 12 V outputs, detecting open-load, short-to-battery, and short-to-ground faults. Use Value: –0.2 V to +26 V common-mode range tolerates negative transients during relay coil de-energization and load-dump surges. |
Use Scenario: Precision current regulation and thermal derating feedback for adaptive LED matrix headlamps. IC Role / Device Role / Timing Role: Low-side sensing on constant-current LED strings, feeding real-time data to lighting controller for dimming and diagnostics. Use Value: 260 µA quiescent current allows continuous monitoring without violating automotive static current limits (<100 µA typical). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA240A3QDRQ1 | Higher bandwidth (400 kHz), lower offset (±10 µV typ), but 1.7 mA IQ and 8-pin SOIC package. | Better suited for high-speed motor control where precision outweighs power budget; not drop-in due to pin count and footprint. | Select when >200 kHz bandwidth and <50 µV offset are required, and PCB area/power allow larger package and higher IQ. |
| MAX40056ATA+T | Wider common-mode (–5 V to +65 V), 200 V/V gain only, no AEC-Q100 qualification, 350 µA IQ. | Supports 48 V mild-hybrid systems but lacks automotive qualification and functional safety documentation. | Consider for non-safety-critical 48 V subsystems where extended voltage range is mandatory and AEC-Q100 is not required. |
Compared with INA180B3QDBVRQ1, INA240A3QDRQ1 offers superior dynamic performance at higher power and board area cost, while MAX40056ATA+T extends voltage range beyond 26 V but sacrifices automotive qualification and safety support - making INA180B3QDBVRQ1 optimal for cost-sensitive, AEC-Q100-compliant 12 V/24 V applications requiring balanced accuracy, speed, and efficiency.
Availability
INA180B3QDBVRQ1 is available at Aetrix Electronics and suitable for battery monitoring, electric power steering, body control modules, and LED headlamp drivers requiring stable component supply in automotive production programs.
Supply support for INA180B3QDBVRQ1 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 leader specializing in analog and embedded processing technologies, with deep expertise in automotive-grade signal conditioning and power management solutions.
The INA180-Q1 family was designed specifically for cost-optimized, high-reliability current sensing in automotive powertrain, chassis, and body electronics - delivering precision, robustness, and functional safety readiness in compact packages.
FAQ
What is the exact gain setting of INA180B3QDBVRQ1?
The INA180B3QDBVRQ1 has a fixed gain of 100 V/V, as indicated by the "B3" suffix in its part number (B = Pinout B, 3 = 100 V/V). This gain is implemented using an internal matched resistor network, eliminating external components and minimizing temperature-induced gain drift to ≤20 ppm/°C.
Does INA180B3QDBVRQ1 support high-side sensing at 24 V battery systems?
Yes, INA180B3QDBVRQ1 supports high-side sensing with a common-mode input range of –0.2 V to +26 V, fully covering 12 V and 24 V automotive battery rails including load-dump transients. Its input stage operates independently of the 2.7–5.5 V supply voltage, enabling direct connection to the battery bus.
What is the maximum operating temperature for INA180B3QDBVRQ1?
INA180B3QDBVRQ1 is qualified per AEC-Q100 Grade 1, specifying continuous operation from –40°C to +125°C ambient temperature. Thermal metrics (RθJA = 197.1°C/W) confirm reliable performance in under-hood environments when mounted on standard 2-layer FR4 with adequate copper pour.
How does the pinout of INA180B3QDBVRQ1 differ from INA180A3QDBVRQ1?
INA180B3QDBVRQ1 uses Pinout B (IN+ on pin 1, GND on pin 2, IN− on pin 3, OUT on pin 4, VS on pin 5), whereas INA180A3QDBVRQ1 uses Pinout A (OUT on pin 1, GND on pin 2, IN+ on pin 3, IN− on pin 4, VS on pin 5). PCB layout must match the correct pinout - mixing them causes functional failure.
Is functional safety documentation available for INA180B3QDBVRQ1?
Yes, Texas Instruments provides functional safety documentation for INA180B3QDBVRQ1, including FIT rate data, failure mode effects analysis (FMEA), and diagnostic coverage guidance - all intended to support ISO 26262 ASIL-B system-level safety certification in automotive applications.
INA180B3QDBVRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 150 kHz
- Current - Input Bias:
- 80 µA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 197µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
INA180B3QDBVRQ1 FAQ
1.How can I place an order for INA180B3QDBVRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for INA180B3QDBVRQ1 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 INA180B3QDBVRQ1 reliable?
The price and inventory of INA180B3QDBVRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA180B3QDBVRQ1 is usually 5 days.
3.What payment methods are accepted for INA180B3QDBVRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA180B3QDBVRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA180B3QDBVRQ1?
INA180B3QDBVRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA180B3QDBVRQ1 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 INA180B3QDBVRQ1?
For technical support, including INA180B3QDBVRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA180B3QDBVRQ1 requirements.
6.How does Aetrix verify that INA180B3QDBVRQ1 is sourced from the original manufacturer or authorized distributors?
All INA180B3QDBVRQ1 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 INA180B3QDBVRQ1 meets industry standards.
7.What is the process for return or replacement of INA180B3QDBVRQ1?
All INA180B3QDBVRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with INA180B3QDBVRQ1, 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 INA180B3QDBVRQ1 part is unused and in its original packaging.
Return procedure for INA180B3QDBVRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
INA180B3QDBVRQ1 Tags
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LM358DT
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Microchip Technology
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