LT6109HMS-2#PBF

Overview

The LT6109HMS-2#PBF is a high-side current sense amplifier featuring an integrated 400mV precision reference and two comparators with identical polarity. It operates within a supply voltage range of 2.7V to 60V, drawing 550µA typically. The device offers a 1MHz bandwidth, 125dB common-mode rejection ratio, and 125µV maximum input offset voltage. It includes open-drain comparator outputs for system interfacing and supports shutdown mode with 5µA maximum current. The component is specified for industrial and automotive applications across a temperature range of –40°C to 125°C.

Feature Summary

• Integrated high-side current sensing with internal level shifting
• Dual comparators configured in same polarity with latching capability
• Internal 400mV precision reference for threshold setting
• Open-drain outputs allowing flexible digital interface integration

Applications

• Overcurrent and undercurrent fault detection
• Battery monitoring systems
• Motor control circuits
• Automotive monitoring and control
• Industrial control systems

Procurement Notes

Verify the specific suffix 'HMS-2' against official Analog Devices documentation to confirm the H-grade temperature rating and dual-comparator polarity configuration. Ensure compatibility with MSOP-10 footprint requirements during procurement planning. Cross-reference datasheet revision numbers to validate electrical characteristics match design specifications.

Selection Notes

Select this component when high-side sensing with integrated fault protection is required. The LT6109HMS-2#PBF is suitable for applications needing simultaneous overcurrent and undercurrent detection using comparators with the same polarity. Consider the 125µV offset and 1MHz bandwidth for precision and speed requirements. Evaluate thermal dissipation if operating near maximum supply voltages or currents.

Part Context

This part belongs to the LT6109 family of complete high-side current sense devices. The LT6109 series integrates a precision amplifier, voltage reference, and comparators into a single package. The LT6109-2 variant specifically features comparators connected in the same polarity, distinguishing it from the LT6109-1 which has opposing polarity configurations.

Replacement Considerations

LT6109HMS-1#PBF (comparators in opposing polarity)

FAQ

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

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

How are the comparator trip points configured?

The amplifier gain and comparator trip points are configured by external resistors connected to the INC1 and INC2 pins.