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INA300AQDGSRQ1
Texas Instruments
IC CURRENT SENSE 10VSSOP
5027 Pcs New Original In Stock
Current Sense Regulator High/Low-Side 10-VSSOP
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*Quantity
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Minimum 1
5.0 / 5.0
- (371 Ratings)
INA300AQDGSRQ1
Product Overview
1299731
DiGi Electronics Part Number
INA300AQDGSRQ1-DGManufacturer
Texas Instruments
INA300AQDGSRQ1
Description
IC CURRENT SENSE 10VSSOPInventory
5027 Pcs New Original In Stock
Current Sense Regulator High/Low-Side 10-VSSOP
Quantity
Minimum 1
Minimum 1
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INA300AQDGSRQ1 Technical Specifications
Category
Power Management (PMIC), Current Regulation/Management
Packaging
Cut Tape (CT) & Digi-Reel®
Series
-
Product Status
Active
Function
Current Sense
Sensing Method
High/Low-Side
Accuracy
-
Voltage - Input
2.7V ~ 5.5V
Current - Output
-
Operating Temperature
-40°C ~ 125°C
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Supplier Device Package
10-VSSOP
Base Product Number
INA300
Datasheet & Documents
HTML Datasheet
INA300AQDGSRQ1-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-296-44721-1-DG
TEXTISINA300AQDGSRQ1
2156-INA300AQDGSRQ1
296-44721-6
296-44721-2
296-44721-1
-296-44721-1
INA300AQDGSRQ1-DG
Standard Package
2,500
Alternative Parts
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QUANTITY AVAILABLE
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UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
商品の到着が予定より早くて助かりました。物流整備も行き届いていると感じます。
de desembre 02, 2025
Post-purchase support exceeded my expectations, showcasing their commitment to customer satisfaction.
de desembre 02, 2025
Customer service interactions are smooth, friendly, and highly efficient.
de desembre 02, 2025
I received my order within two days, and the product's resilience exceeded my expectations.
de desembre 02, 2025
We rely on their extensive inventory and prompt after-sales assistance to keep our business running smoothly.
de desembre 02, 2025
Delivery was not only fast but also handled with care, ensuring the contents were safe.
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Frequently Asked Questions (FAQ)
Can the INA300AQDGSRQ1 be used in a high-side current sensing application for a 48V automotive battery system, and what are the key design risks if the common-mode voltage exceeds its specified range?
The INA300AQDGSRQ1 is not suitable for direct high-side current sensing in a 48V automotive system because its input voltage range is limited to 2.7V–5.5V, and it does not support high common-mode voltages. Attempting to use it in such an application risks permanent damage due to overvoltage on the input pins. For 48V systems, consider using a dedicated high-side current sense amplifier like the TI INA240A1QDGSRQ1, which supports up to 80V common-mode voltage. If you must use the INA300AQDGSRQ1, you would need a precision voltage divider or level-shifting circuit, but this introduces accuracy drift, thermal errors, and reliability concerns—making it a poor design choice for safety-critical automotive applications.
Is the INA300AQDGSRQ1 a drop-in replacement for the INA300AIDGSR in an existing automotive power monitoring design, and what hidden compatibility issues should I evaluate before switching?
While the INA300AQDGSRQ1 and INA300AIDGSR share the same base part number and package, the 'Q1' suffix indicates AEC-Q100 automotive qualification, whereas the 'I' version is industrial grade. Mechanically and electrically, they are nearly identical, but the INA300AQDGSRQ1 has undergone additional reliability testing for automotive environments. However, verify your supply chain and firmware calibration—some industrial designs may rely on slight parametric variations. Also, confirm that your PCB layout meets the moisture sensitivity level (MSL 2) requirements during assembly. Switching is generally safe, but always validate performance across the full temperature range (-40°C to 125°C) to ensure no drift-induced errors in current measurement accuracy.
What are the reliability risks of using the INA300AQDGSRQ1 in a high-vibration under-hood automotive environment, and how does its AEC-Q100 qualification mitigate potential failure modes?
The INA300AQDGSRQ1 is AEC-Q100 qualified, which means it has passed rigorous stress tests including temperature cycling, mechanical shock, and vibration—critical for under-hood applications. However, reliability still depends on proper PCB mounting and solder joint integrity. The 10-VSSOP package is surface-mount and susceptible to fatigue under sustained high vibration. To mitigate risk, use conformal coating, ensure adequate pad design with proper solder fillets, and avoid placing the device near high-stress areas like board edges. Additionally, follow TI’s recommended layout guidelines for thermal and mechanical stability. While the part itself is robust, system-level design choices can undermine its automotive-grade reliability if not carefully implemented.
How does the INA300AQDGSRQ1 compare to the INA226A1QDGSRQ1 for current sensing in a 12V automotive load monitoring application, and when would one be preferred over the other?
The INA300AQDGSRQ1 is a dedicated current sense comparator with integrated alert functionality, ideal for overcurrent detection with fast response times, while the INA226A1QDGSRQ1 is a digital power monitor with I²C interface, providing high-accuracy current, voltage, and power measurements. Choose the INA300AQDGSRQ1 when you need hardware-based fault detection without MCU intervention—such as triggering a shutdown in microseconds. Opt for the INA226A1QDGSRQ1 when system-level diagnostics, logging, or dynamic load management are required. The INA300AQDGSRQ1 lacks digital communication and precision calibration, so it’s less suitable for applications needing accurate Coulomb counting or software-configurable thresholds. Your decision should hinge on response speed versus data visibility.
What layout and grounding practices are critical when integrating the INA300AQDGSRQ1 into a noisy automotive power distribution system to avoid false triggering or measurement errors?
Proper layout is essential to prevent noise coupling into the sensitive inputs of the INA300AQDGSRQ1. Use a star grounding technique with a single-point connection between the sense resistor ground and the amplifier’s ground pin to avoid ground loops. Keep the Kelvin connections to the shunt resistor as short and symmetrical as possible to minimize parasitic resistance and inductance. Place a 0.1 µF ceramic decoupling capacitor within 3 mm of the VCC pin, and avoid routing high-current traces near the input lines. Additionally, shield the sense lines if running near PWM-driven loads like motors or solenoids. These practices reduce the risk of electromagnetic interference (EMI)-induced false alerts, ensuring reliable operation in harsh automotive environments.
Quality Assurance (QC)
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INA300AQDGSRQ1 CAD Models
Texas Instruments INA300AQDGSRQ1 PCB symbols & footprints
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