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INA168QPWRQ1
Texas Instruments
IC CURRENT MONITOR 0.5% 8TSSOP
6235 Pcs New Original In Stock
Current Monitor Regulator High-Side 8-TSSOP
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*Quantity
Minimum 1
Minimum 1
5.0 / 5.0
- (490 Ratings)
INA168QPWRQ1
Product Overview
1278675
DiGi Electronics Part Number
INA168QPWRQ1-DGManufacturer
Texas Instruments
INA168QPWRQ1
Description
IC CURRENT MONITOR 0.5% 8TSSOPInventory
6235 Pcs New Original In Stock
Current Monitor Regulator High-Side 8-TSSOP
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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INA168QPWRQ1 Technical Specifications
Category
Power Management (PMIC), Current Regulation/Management
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Function
Current Monitor
Sensing Method
High-Side
Accuracy
±0.5%
Voltage - Input
2.7V ~ 60V
Current - Output
-
Operating Temperature
-40°C ~ 125°C
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
8-TSSOP (0.173", 4.40mm Width)
Supplier Device Package
8-TSSOP
Base Product Number
INA168
Datasheet & Documents
HTML Datasheet
INA168QPWRQ1-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-296-17201-1
-296-17201-1-NDR
296-17201-6-NDR
296-17201-1-NDR
296-17201-6
-INA168QPWRQ1-NDR
TEXTISINA168QPWRQ1
296-17201-2
296-17201-2-NDR
-296-17201-1-DG
296-17201-1
2156-INA168QPWRQ1
Standard Package
2,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
価格とサービスのバランスが非常に良くておすすめです。
de desembre 02, 2025
The shopping experience with DiGi Electronics is consistently reliable, reflecting their commitment to product consistency.
de desembre 02, 2025
DiGi Electronics' logistics team is exceptionally reliable, reducing delivery delays.
de desembre 02, 2025
I appreciate how quickly they shipped my order; it was at my doorstep before I even expected.
de desembre 02, 2025
Dedicated after-sales team handled my requests with care and professionalism.
de desembre 02, 2025
I value the consistent dependability of DiGi Electronics' services.
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Frequently Asked Questions (FAQ)
Can the INA168QPWRQ1 be safely used in a 48V automotive powertrain system where transient voltages may exceed 60V, and what design precautions are needed to avoid damage?
The INA168QPWRQ1 has a maximum input voltage rating of 60V, so it is not inherently protected against load dump or inductive transients common in 48V automotive systems that can spike above 70V. To safely use it, you must implement external overvoltage protection such as a TVS diode rated for ISO 7637-2 compliance, placed close to the high-side input. Additionally, consider adding a series resistor (e.g., 100Ω) and RC filter to limit inrush and dampen ringing. Without these mitigations, repeated exposure to transients can degrade or destroy the device, despite its AEC-Q100 qualification.
Is the INA168QPWRQ1 a drop-in replacement for the Maxim MAX4080FASA+ in a high-side current sensing application for an EV battery management system, and what adjustments might be needed?
While both the INA168QPWRQ1 and MAX4080FASA+ are high-side current monitors with similar supply ranges, they are not direct drop-in replacements due to differences in output scaling and bandwidth. The INA168QPWRQ1 uses a fixed gain of 20 V/V and requires an external sense resistor, whereas the MAX4080FASA+ has a gain of 20 V/V but different output impedance and response characteristics. You’ll need to verify signal conditioning compatibility—especially if your ADC expects a specific output swing or settling time. Also, confirm layout symmetry and grounding, as the INA168QPWRQ1’s 8-TSSOP package demands careful thermal and EMI management in high-noise EV environments.
How does the ±0.5% accuracy specification of the INA168QPWRQ1 hold up under real-world conditions like temperature drift and PCB thermal gradients, and what calibration strategy is recommended for precision motor control applications?
The ±0.5% accuracy of the INA168QPWRQ1 is specified at 25°C, but in practice, temperature drift (especially across -40°C to 125°C) and self-heating from high-side currents can degrade effective accuracy to ±1.5% or more in extreme conditions. For precision motor control, perform a two-point calibration at minimum and maximum operating temperatures using a known precision shunt. Additionally, ensure the sense resistor has a low TCR (<50 ppm/°C) and is thermally isolated from heat sources. Without calibration, reliance on datasheet accuracy alone may lead to torque ripple or overcurrent false triggers in closed-loop systems.
Can the INA168QPWRQ1 be used bidirectionally to monitor both charging and discharging currents in a 12V automotive battery line, and what circuit modifications are required?
The INA168QPWRQ1 is inherently unidirectional—it only measures current flowing from the high-side supply into the load. To monitor bidirectional current (e.g., battery charge/discharge), you must add an external circuit such as a precision comparator or microcontroller-driven polarity detection with analog switching, or use a dedicated bidirectional monitor like the INA240A1QPWRQ1. Alternatively, you can offset the reference voltage and interpret negative output swings, but this reduces dynamic range and requires careful ADC handling. Attempting bidirectional sensing without modification risks incorrect readings or damage during reverse current events.
What are the key reliability risks when using the INA168QPWRQ1 in under-hood automotive applications, and how does its MSL 1 rating impact assembly and long-term field performance?
Although the INA168QPWRQ1 is AEC-Q100 qualified and rated for -40°C to 125°C, under-hood environments expose it to thermal cycling, vibration, and humidity that can stress solder joints and induce electromigration over time. Its MSL 1 (unlimited floor life) rating simplifies handling but doesn’t eliminate reliability risks from poor PCB layout—such as insufficient thermal relief or asymmetric pad design—which can lead to early failure. To mitigate risk, follow TI’s recommended land pattern, use conformal coating if exposed to condensation, and perform HAST or thermal shock testing during validation. Ignoring mechanical and environmental stress factors may result in latent field failures despite passing initial functional tests.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
INA168QPWRQ1 CAD Models
Texas Instruments INA168QPWRQ1 PCB symbols & footprints
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