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INA169

TIINA169

MPN: INA169NA/3K
Texas Instruments
Current Monitor Regulator High-Side SOT-23-5
Active2,872 in stock

Overview

The INA169 is a high-side, unipolar current shunt monitor that converts a differential input voltage into a current output. This output current is converted back to a voltage using an external load resistor, allowing for easy gain adjustment with a single component. It supports a wide common-mode input range from 2.7V to 60V, making it suitable for a variety of power monitoring tasks.

Why Choose This Part

The device features an exceptionally low quiescent current of only 60uA, minimizing its impact on the system power budget. Its independent supply and input common-mode voltages provide significant design flexibility, while the single-resistor gain setting simplifies hardware tuning.

Applications

Battery Charging Systems
Monitoring charge and discharge currents in battery packs with high common-mode voltages.
Power Management
Real-time current sensing for over-current protection and power consumption tracking in industrial equipment.
Precision Current Shunt Measurement
Converting small differential voltages across a shunt resistor into a ground-referenced signal for ADC input.

Key Specifications

Accuracy +/-0.5%
Function Current Monitor
Mounting Type Surface Mount
Package / Case SC-74A, SOT-753
Sensing Method High-Side
Voltage - Input 2.7V ~ 60V
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package SOT-23-5

Getting Started

To evaluate this part, use a high-precision shunt resistor placed in the high-side supply path and select an output resistor (RL) to set the desired transconductance gain. Ensure the output load resistor is tied to a clean ground to maintain accuracy during current-to-voltage conversion.

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