LT6108IDCB-2#TRPBF

Overview

The LT6108IDCB-2#TRPBF is a high-side current sense amplifier with an integrated comparator and reference, packaged in an 8-lead DFN. It operates from 2.7V to 60V with a supply current of 450µA. The device features a maximum input offset voltage of 350µV, a gain error of -0.3%, and a bandwidth of 1MHz. The non-latching comparator has a threshold of 400mV and a total threshold error of ±1.25%. It functions within a temperature range of –40°C to 85°C.

Feature Summary

• Integrates a precision current sense amplifier with a user-configurable gain via external resistors.
• Includes a built-in 400mV precision voltage reference for accurate comparator threshold setting.
• Features a fast-response open-drain comparator output for immediate overcurrent event detection.
• Supports direct connection to the high-side power rail without requiring level shifting.

Applications

• Overcurrent and fault detection in industrial systems
• Current shunt measurement for battery monitoring
• Motor control applications requiring fast step response
• Automotive monitoring and control circuits

Procurement Notes

Verify the specific suffix TRPBF indicates tape and reel packaging when sourcing this component. Confirm the IDCB package designation matches the required 8-lead DFN footprint on your PCB layout. Ensure the I grade temperature rating aligns with your operational environment requirements before finalizing procurement.

Selection Notes

Select this part for applications requiring high-side sensing up to 60V with integrated fault protection. The non-latching comparator suits continuous monitoring where automatic reset is preferred. Consider the 350µV offset and -0.3% gain error for precision requirements. Verify that the 8-lead DFN package fits your spatial constraints and thermal management strategy.

Part Context

This component belongs to the LT6108 family of high-side current sense amplifiers. It shares core architecture with the latching LT6108-1 variant but utilizes a non-latching comparator configuration. The IDCB suffix denotes the industrial temperature grade and the specific plastic DFN package type used for surface mount assembly.

Replacement Considerations

LT6108IDCB-1#TRPBF

FAQ

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

The LT6108-1 features a latching comparator that requires a reset pulse to clear, while the LT6108-2 has a non-latching comparator that automatically resets when the fault condition clears.

How is the gain of the current sense amplifier configured?

The gain is set by two external resistors: RIN connected between V+ and SENSEHI, and ROUT connected between OUTA and V–. The voltage gain is determined by the ratio of ROUT to RIN.