LT6119HMS-1#PBF

Overview

The LT6119HMS-1#PBF is a high-side current sense amplifier featuring an integrated precision voltage reference and two latching comparators with power-on reset. It operates within a supply voltage range of 2.7V to 60V and draws a typical supply current of 550µA. The device provides a maximum input offset voltage of 200µV and a maximum gain error of 0.2%. Comparator threshold accuracy is specified at ±1.25% maximum total error, utilizing an internal 400mV reference. The component is housed in a 10-lead MSOP package and is rated for operation from –40°C to 125°C.

Feature Summary

• Integrates a precision current sense amplifier with an internal 400mV reference and two independent latching comparators.
• Features fast fault protection with a typical propagation delay of 1.4µs and power-on reset capability for comparator outputs.
• Supports wide supply voltage ranges up to 60V while maintaining low offset voltage and high common-mode rejection.

Applications

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

Procurement Notes

Verify the specific suffix 'H' indicates the extended temperature grade (-40°C to 125°C) compared to the standard 'I' grade. Confirm the '-1' designation ensures opposing polarity comparator inputs. Ensure the '#PBF' suffix corresponds to lead-free packaging and tube shipping format as documented in the ordering information section.

Selection Notes

Select this variant when opposing polarity comparator configurations are required for distinct overcurrent and undercurrent flagging. The high-side architecture allows direct connection to the positive rail. Consider external resistor tolerance impacts on overall gain error, as the device specifies systematic negative gain error dependent on external components.

Part Context

This component belongs to the LT6119 family of complete high-side current sense devices. The LT6119-1 variant specifically configures its internal comparators with opposing polarities, distinguishing it from the LT6119-2 which shares the same polarity. Both variants share identical amplifier specifications and package options.

Replacement Considerations

LT6119IMS-1#PBF (Industrial Temperature Grade)

FAQ

What is the functional difference between the LT6119-1 and LT6119-2?

The LT6119-1 features comparators connected in opposing polarity, allowing for separate overcurrent and undercurrent detection flags. The LT6119-2 connects both comparators in the same polarity.

How is the latch function controlled?

The latch function is controlled via the LE (Latch Enable) pin. When the LE input is high, the comparator latch is enabled, causing the output to latch low upon tripping. When low, the latch is disabled.