LT6119IMS-1#PBF

Overview

The LT6119IMS-1#PBF is a high-side current sense amplifier featuring an integrated precision voltage reference and two latching comparators with power-on reset. It operates within a supply voltage range of 2.7V to 60V and supports a temperature range of –40°C to 85°C. The device incorporates a current sense amplifier with a maximum input offset voltage of 200µV and a maximum gain error of 0.2%. It includes an internal 400mV reference for comparator threshold setting, offering a total threshold error of ±1.25% maximum. The LT6119-1 variant provides comparators with opposing polarity configurations.

Feature Summary

• Integrates a precision current sense amplifier with low offset voltage and high common-mode rejection ratio.
• Includes two independent latching comparators with configurable power-on reset functionality.
• Features an internal 400mV precision voltage reference for accurate threshold setting.
• Supports wide supply voltage operation up to 60V with fast fault detection response.

Applications

• Overcurrent and undercurrent protection circuits
• Current shunt measurement systems
• Motor control applications requiring fast step response
• Battery monitoring systems
• Automotive monitoring and control

Procurement Notes

Verify the specific suffix IMS-1#PBF corresponds to the industrial temperature grade (-40°C to 85°C) and MSOP package. Confirm that the -1 designation ensures opposing polarity comparator inputs as required by the circuit design. Ensure compatibility with the intended pull-up voltages for the open-drain outputs.

Selection Notes

Select this component when opposing polarity comparator outputs are necessary for distinct overcurrent and undercurrent flagging. The LT6119-1 differs from the LT6119-2, which features same-polarity comparators. Consider the 200µV maximum offset voltage for high-precision low-current sensing applications. Verify that the 10-lead MSOP package fits the available PCB footprint constraints.

Part Context

The LT6119 series combines a high-side current sense amplifier with dual comparators in a single 10-lead MSOP package. The LT6119-1 variant specifically configures the internal comparators with opposing polarities, allowing one to trigger on rising thresholds and the other on falling thresholds relative to the internal reference. This integration reduces component count in complex protection schemes.

Replacement Considerations

LT6119HMS-1#PBF (Higher temperature grade)

FAQ

What is the difference between LT6119-1 and LT6119-2?

The LT6119-1 has comparators connected in opposing polarity, while the LT6119-2 has comparators connected in the same polarity.

How is the comparator latch controlled?

The LE pin controls the latch function; when high, the latch is enabled, and when low, it is disabled.