LT6108IDCB-1#TRMPBF

Overview

The LT6108IDCB-1#TRMPBF is a high-side current sense amplifier with an integrated 400mV reference and a latching comparator. It operates within a supply voltage range of 2.7V to 60V, drawing 450µA typical supply current. The device features a maximum input offset voltage of 125µV and a gain error of 0.2%. It provides a 1MHz bandwidth and a fast step response of 500ns. The total threshold error for the comparator is ±1.25%, with a propagation delay of typically 1.4µs. It is specified for operation from –40°C to 85°C in an 8-lead DFN package.

Feature Summary

• Integrates a precision current sense amplifier with a 400mV internal reference and a latching comparator for fault detection.
• Provides direct access to amplifier inputs/outputs and comparator inputs/outputs for flexible system configuration.
• Features a wide supply range and low shutdown current suitable for industrial and automotive monitoring applications.

Applications

• Overcurrent and fault detection
• Current shunt measurement
• Motor control
• Battery monitoring

Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates tape and reel packaging containing 500 pieces. Confirm the temperature grade 'I' corresponds to the –40°C to 85°C operating range. Ensure the DCB package variant matches the required PCB footprint and thermal requirements for the target application.

Selection Notes

Select this component when a latching comparator output is required to capture transient overcurrent events. The LT6108-1 variant is distinct from the non-latching LT6108-2. Consider the 125µV maximum offset voltage for high-precision low-current sensing applications requiring minimal external calibration.

Part Context

This part belongs to the LT6108 family of high-side current sense amplifiers. It is available in MSOP and DFN packages. The IDCB-1 designation specifies the industrial temperature grade, DFN package, and latching comparator functionality. It serves as a complete solution for current monitoring and protection in power systems.

Replacement Considerations

LT6108HDCB-1#TRMPBF (Higher temperature grade)

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 on the EN/RST pin to clear the fault flag. The LT6108-2 has a non-latching comparator that automatically resets when the overcurrent condition clears.

How is the comparator threshold configured?

The comparator threshold is set using the internal 400mV precision reference and external resistors connected to the INC pin. The total threshold error is specified as ±1.25% maximum.