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INA302A2QPWRQ1

TIINA302A2QPWRQ1

Texas Instruments
Current Sense Regulator High/Low-Side 14-TSSOP
Active6,944 in stock
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Overview

The INA302A2QPWRQ1 is an automotive-qualified, high-accuracy current-sense amplifier with integrated dual comparators. It is designed to monitor voltages across a sense resistor on common-mode rails ranging from 0V to 36V, providing a scaled analog output and two independent overcurrent alert signals. This device is AEC-Q100 qualified and functional safety-capable for use in demanding vehicle environments.

Why Choose This Part

The integrated dual comparators offer fast response times and independent latching control, reducing the need for external monitoring circuitry. It features a high-accuracy amplifier with a low 0.1% gain error and a wide operating temperature range from -40C to 125C. The AEC-Q100 qualification and functional safety documentation simplify compliance for automotive Tier-1 suppliers.

Applications

Electronic Power Steering (EPS)
High-side current monitoring to ensure precise motor control and safety-critical fault detection.
EV Battery Management Systems
Monitoring charging and discharging currents with hardware-based overcurrent protection for cell safety.
Body Control Modules
Detecting short-circuit or stalled motor conditions in power windows, seats, and wipers.
Brake System Actuators
Real-time current feedback for electro-mechanical braking systems requiring high reliability.

Key Specifications

Function Current Sense
Mounting Type Surface Mount
Package / Case 14-TSSOP (0.173", 4.40mm Width)
Sensing Method High/Low-Side
Voltage - Input 0V ~ 36V
Operating Temperature -40degC ~ 125degC (TA)
Supplier Device Package 14-TSSOP

Getting Started

To evaluate this part, use the INA302EVM evaluation module which provides test points for the analog output and comparator pins. Ensure the shunt resistor is sized for the expected current range to stay within the 36V common-mode limit. Refer to TI's functional safety documentation when designing for ASIL-rated automotive systems.

INA302A2 Family

Comparing specs that differ across variants. The current part is highlighted.

Part Number Temp Range Stock
INA302A2QPWRQ1 (this part) -40degC ~ 125degC .. 6,944
INA302A2IPWR -40degC ~ 125degC 1,661

Also Consider

INA226AQDGSRQ1 TITexas Instruments - Provides a digital I2C output for high-precision current and voltage monitoring if analog outputs are not required.