LT6109IMS-1#TRPBF

Overview

The LT6109IMS-1#TRPBF is a high-side current sense amplifier with integrated reference and comparators, housed in a 10-lead MSOP package. It operates on a supply voltage range of 2.7V to 60V with a typical supply current of 550µA. The device features a maximum input offset voltage of 125µV and a gain error of 0.2% maximum. It includes two open-drain comparators with a total threshold error of ±1.25% and a typical propagation delay of 1.4µs. The component is specified for operation from –40°C to 85°C.

Feature Summary

• Integrates a precision current sense amplifier with an internal 400mV reference and two latching comparators.
• Provides fast response capabilities with a 1MHz bandwidth and low propagation delay for critical fault detection.
• Features open-drain comparator outputs allowing easy interface to system components and level shifting.
• Supports wide supply voltage ranges suitable for industrial and automotive monitoring applications.

Applications

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

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the IMS designation corresponds to the industrial temperature grade of –40°C to 85°C. Ensure the -1 variant is selected for opposing polarity comparator configuration. Cross-reference the manufacturer's latest documentation for any updates to pinout or electrical characteristics.

Selection Notes

Select this component for high-side sensing applications requiring integrated fault protection. The -1 version offers opposing polarity comparators suitable for distinct warning and disconnect thresholds. Consider the 125µV max offset voltage for high-precision low-current measurements. Evaluate the 10-lead MSOP package constraints against available board space and thermal dissipation requirements.

Part Context

This part belongs to the LT6109 family of high-side current sense amplifiers. The LT6109-1 variant specifically configures the internal comparators with opposing polarities, enabling separate overcurrent and undercurrent flagging. The IMS package denotes a plastic MSOP form factor designed for compact electronic assemblies.

Replacement Considerations

LT6109AIMS-1#TRPBF: Higher accuracy grade with lower offset voltage specifications.

FAQ

What is the difference between the LT6109-1 and LT6109-2 variants?

The LT6109-1 has comparators connected in opposing polarity, while the LT6109-2 has them connected in the same polarity.

How is the comparator latch reset function performed?

Pulsing the EN/RST pin low for a duration between 2µs and 15µs resets the internal comparators.