LT6108IDCB-1

Overview

The LT6108IDCB-1 is a high-side current sense amplifier with an integrated comparator and reference, housed in an 8-lead DFN package. It operates within a supply voltage range of 2.7V to 60V and supports a specified temperature range of –40°C to 85°C. The device features a maximum input offset voltage of 350µV and a gain error of 0.2% maximum. It includes a latching comparator with a typical threshold of 400mV and a total threshold error of ±1.25%. Supply current is typically 450µA, reducing to 5µA maximum in shutdown mode.

Feature Summary

• Integrates a precision current sense amplifier with a latching comparator and internal voltage reference
• Provides direct access to amplifier and comparator inputs and outputs for flexible system configuration
• Features fast response times suitable for critical overcurrent detection and motor control applications

Applications

• Overcurrent and fault detection
• Current shunt measurement
• Motor control
• Industrial control systems

Procurement Notes

Verify the specific ordering suffix IDCB-1#TRMPBF against official Analog Devices documentation to confirm the 8-lead DFN package and tape-and-reel quantity. Ensure the temperature grade matches the required operational environment. Confirm lead-free finish compliance if necessary for assembly processes.

Selection Notes

Select this component when a high-side sensing solution with integrated fault protection is required. The latching comparator option distinguishes it from non-latching variants. Consider the thermal performance of the DFN package for high-voltage applications where exposed pad connection may be utilized for improved heat dissipation.

Part Context

This part belongs to the LT6108 family of high-side current sense amplifiers. It shares core functionality with MSOP-packaged versions but utilizes a compact plastic DFN form factor. The -1 suffix indicates the inclusion of a latching comparator, differentiating it from the -2 variant which offers a non-latching output.

Replacement Considerations

LT6108HDCB-1#TRMPBF (Higher temperature grade)

FAQ

What is the function of the EN/RST pin on the LT6108IDCB-1?

The EN/RST pin serves as both the enable input and the latch reset input. Pulling it low for a specific duration resets the latching comparator state.

How is the amplifier gain configured?

The gain is set by external resistors RIN and ROUT. The output current is proportional to the sense voltage divided by RIN, and converted to voltage by ROUT.