LT6119HMS-2#PBF

Overview

The LT6119HMS-2#PBF is a high-side current sense device integrating a precision amplifier, a 400mV reference, and two latching comparators. It operates from 2.7V to 60V with a supply current of 550µA. The comparator inputs are configured for same-polarity detection. Key electrical parameters include a maximum input offset voltage of 200µV, a maximum gain error of 0.2%, and a typical propagation delay of 1.4µs. It is specified for operation from –40°C to 125°C in a 10-lead MSOP package.

Feature Summary

• Integrates a precision current sense amplifier with an internal 400mV reference and two latching comparators.
• Features fast fault protection with power-on reset capability and early warning functionality.
• Provides independent comparator inputs and open-drain outputs configurable via external resistors.

Applications

• Overcurrent, undercurrent, and fault detection
• Current shunt measurement
• Motor control
• Automotive monitoring and control

Procurement Notes

Verify the specific suffix 'HMS-2' corresponds to the automotive temperature grade (–40°C to 125°C) and the dual-inverting comparator configuration. Confirm the '#PBF' designation indicates lead-free finish and tube packaging. Ensure compatibility with the required 10-lead MSOP footprint during procurement.

Selection Notes

Select this component when simultaneous overcurrent and undercurrent detection using identical polarity thresholds is required. The integrated 400mV reference simplifies threshold setting compared to discrete solutions. Consider the 1.4µs propagation delay for system timing requirements and verify that the 60V common-mode range meets the application's supply voltage needs.

Part Context

This part belongs to the LT6119 family of complete high-side current sense devices. The LT6119-2 variant specifically connects both comparators in the same polarity, unlike the LT6119-1 which uses opposing polarities. It is designed for industrial and automotive applications requiring robust fault detection within a compact 10-lead MSOP package.

Replacement Considerations

LT6119HMS-2#TRPBF: Same functional specifications but supplied in tape and reel packaging instead of tubes.

FAQ

How does the LT6119-2 differ from the LT6119-1?

The LT6119-2 has both comparators connected in the same polarity (both inverting), whereas the LT6119-1 has comparators connected in opposing polarities (one inverting, one non-inverting).

What is the function of the LE pin?

The LE (Latch Enable) pin controls the comparator latch functionality. When high, the latch is enabled; when low, the latch is disabled and the comparator functions transparently.