LT6108IMS8-1#PBF

Overview

The LT6108IMS8-1#PBF is a high-side current sense amplifier with an integrated latching comparator and precision reference. It operates on a supply voltage range of 2.7V to 60V with a typical supply current of 450µA. The device features a maximum input offset voltage of 125µV, a gain error of 0.2% maximum, and a signal bandwidth of 1MHz. It provides a fast step response of 500ns and includes an open-drain comparator output for fault detection.

Feature Summary

• Integrates a precision current sense amplifier with a latching comparator and internal 400mV reference
• Provides direct access to amplifier and comparator inputs and outputs for flexible system configuration
• Features a wide common-mode voltage range suitable for high-side sensing applications
• Includes shutdown capability with low standby current consumption

Applications

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

Procurement Notes

Verify the specific suffix IMS8 corresponds to the 8-lead plastic MSOP package when sourcing. Confirm the -1 designation indicates the version with a latching comparator output. Ensure the #PBF suffix is present to guarantee lead-free compliance and RoHS adherence as per manufacturer specifications.

Selection Notes

Select this component for applications requiring both precise current measurement and immediate fault latching. The latching feature distinguishes it from non-latching variants, ensuring persistent fault flags until reset. Consider the 1MHz bandwidth for high-speed error detection needs in critical motor or power control loops.

Part Context

This part belongs to the LT6108 family of high-side current sense amplifiers. The LT6108-1 variant specifically incorporates a latching comparator, whereas the LT6108-2 offers a non-latching option. Both share identical amplifier characteristics but differ in comparator behavior and enable pin functionality.

Replacement Considerations

LT6108IMS8-2#PBF (Non-latching comparator)

FAQ

What is the function of the EN/RST pin on the LT6108-1?

The EN/RST pin serves dual purposes: pulling it high enables the device, while pulsing it low for 2µs to 15µs resets the latching comparator.

How is the amplifier gain configured?

Gain is set by external resistors RIN and ROUT, where the voltage gain equals ROUT divided by RIN.