LT6108IMS8-1#TRPBF

Overview

The LT6108IMS8-1#TRPBF is a high-side current sense amplifier featuring an integrated precision reference and a latching comparator. It operates within a supply voltage range of 2.7V to 60V with a typical supply current of 450µA. The device incorporates a current sense amplifier with a maximum input offset voltage of 125µV, a gain error of 0.2% maximum, and a signal bandwidth of 1MHz. The internal comparator provides a rising threshold of 400mV with a total threshold error of ±1.25% maximum. It is housed in an 8-lead MSOP package.

Feature Summary

• Integrates a precision current sense amplifier with a 1MHz bandwidth for fast step response
• Includes an internal 400mV precision voltage reference for accurate threshold setting
• Features a latching open-drain comparator output for capturing overcurrent events
• Supports wide supply ranges up to 60V with low shutdown current consumption

Applications

• Circuit fault protection with very fast latching load disconnect
• Motor control systems requiring error detection
• Battery monitoring applications
• Industrial control and automotive monitoring

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IMS8 designation corresponds to the 8-lead plastic MSOP package variant. Ensure the -1 suffix is selected for the latching comparator functionality required by the design. Cross-reference the manufacturer part number against official Analog Devices documentation to validate lead-free finish specifications.

Selection Notes

Select this component for applications requiring high-side current sensing with integrated fault detection. The latching comparator distinguishes it from non-latching variants, suitable for permanent fault signaling. Consider the 125µV maximum offset voltage for precision requirements. Evaluate the 60V maximum supply capability against system voltage levels. Verify thermal management needs for the MSOP package in high-voltage environments.

Part Context

This part belongs to the LT6108 family of high-side current sense amplifiers. The -1 variant specifically includes a latching comparator, whereas the -2 variant offers a non-latching option. Both versions share identical amplifier characteristics but differ in comparator behavior. The IMS8 package denotes the surface-mount MSOP form factor used for compact circuit designs.

Replacement Considerations

LT6108IMS8-1#PBF (Tube version)

FAQ

What is the difference between the LT6108-1 and LT6108-2?

The LT6108-1 features a latching comparator that requires a reset pulse on the EN/RST pin, while the LT6108-2 has a non-latching comparator controlled by an enable pin.

How is the comparator threshold configured?

The comparator uses an internal 400mV precision reference as the threshold. External resistors can be used to set the trip point relative to this reference.