LT6108AIMS8-1#PBF

Overview

The LT6108AIMS8-1#PBF is a high-side current sense amplifier with an integrated precision reference and latching comparator. It operates within a supply voltage range of 2.7V to 60V, drawing a typical supply current of 450µA. The device features a maximum input offset voltage of 125µV and a signal bandwidth of 1MHz. It provides a fast step response of 500ns and includes an open-drain comparator output for system integration.

Feature Summary

• Integrates a precision current sense amplifier with a built-in 400mV reference and a latching comparator.
• Features low offset voltage and gain error to ensure accurate measurement across wide dynamic ranges.
• Provides fast propagation delay and step response for rapid overcurrent event detection.
• Includes an open-drain comparator output allowing flexible interfacing with various digital logic levels.

Applications

• Overcurrent and fault detection in power systems
• Motor control applications requiring precise current monitoring
• Battery monitoring and management systems
• Industrial control circuits

Procurement Notes

Verify the specific suffix 'AIMS8-1' corresponds to the A-grade accuracy, MSOP package, and latching comparator variant. Confirm the temperature range matches the industrial specification (-40°C to 85°C). Ensure compatibility with the required PCB footprint for the 8-lead plastic MSOP package before finalizing procurement.

Selection Notes

Select this component when high-side sensing is required with integrated fault protection. The A-grade version offers tighter offset voltage specifications compared to standard grades. Consider the latching comparator feature if permanent fault indication is necessary without continuous monitoring. Evaluate thermal performance requirements for the MSOP package in high-voltage applications.

Part Context

This part belongs to the LT6108 family of high-side current sense amplifiers. The -1 suffix indicates the inclusion of a latching comparator, distinguishing it from the non-latching -2 variant. The AIM prefix specifies the A-grade electrical performance characteristics within the industrial temperature range.

Replacement Considerations

LT6108IMS8-1#PBF (Standard grade)

FAQ

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

The LT6108-1 features a latching comparator that requires a reset pulse on the EN/RST pin to clear the fault flag, whereas the LT6108-2 has a non-latching comparator that automatically resets when the fault condition clears.

How is the gain of the internal amplifier configured?

The gain is set by external resistors connected to the OUTA pin. The output current is proportional to the sense voltage divided by the input resistor (RIN), and the output voltage is determined by the product of this current and the output resistor (ROUT).