LT6119-1/LT6119-2 - Current Sense Amplifier, Reference and Comparators with POR


  • Current Sense Amplifier
    – Fast Step Response: 500ns
    – Low Offset Voltage: 200μV Maximum
    – Low Gain Error: 0.2% Maximum
  • Internal 400mV Precision Reference
  • Internal Latching Comparators
    – Power-On Reset Capability
    – Fast Response Time: 500ns
    – Total Threshold Error: ±1.25% Maximum
    – Two Comparator Polarity Options
  • Wide Supply Range: 2.7V to 60V
  • Supply Current: 550μA
  • Specified for –40°C to 125°C Temperature Range
  • Available in 10-Lead MSOP Package

Typical Application

LT6119-1 Typical Application
LT6119-1 Typical Application


The LT®6119 is a complete high side current sense device that incorporates a precision current sense amplifier, an integrated voltage reference and two latching comparators. Two versions of the LT6119 are available. The LT6119-1 has the comparators connected in opposing polarity and the LT6119-2 has the comparators connected in the same polarity. The comparator latch functionality can be enabled or disabled and the comparators can be configured to reset upon power-on. The input and the open-drain outputs of the comparators are independent from the current sense amplifier. The comparator trip points and amplifier gain are configured with external resistors.

The overall propagation delay of the LT6119 is typically only 1.4μs, allowing for quick reaction to overcurrent and undercurrent conditions. The 1MHz bandwidth allows the LT6119 to be used for error detection in critical applications such as motor control. The high threshold accuracy of the comparators, combined with the ability to latch both comparators, ensures the LT6119 can capture high speed events.

The LT6119 is fully specified for operation from –40°C to 125°C, making it suitable for industrial and automotive applications. The LT6119 is available in a small 10-lead MSOP.


CAD Symbols and Footprints: The downloadable Zip file below contains the schematic symbol and PCB footprints.

For complete and up to date package information and drawings, please refer to our packaging page

Part Number Package Code Temp Package
LT6119HMS-1#PBF MS-10 MS H 05-08-1661 Yes
LT6119HMS-1#TRPBF MS-10 MS H 05-08-1661 Yes
LT6119HMS-2#PBF MS-10 MS H 05-08-1661 Yes
LT6119HMS-2#TRPBF MS-10 MS H 05-08-1661 Yes
LT6119IMS-1#PBF MS-10 MS I 05-08-1661 Yes
LT6119IMS-1#TRPBF MS-10 MS I 05-08-1661 Yes
LT6119IMS-2#PBF MS-10 MS I 05-08-1661 Yes
LT6119IMS-2#TRPBF MS-10 MS I 05-08-1661 Yes

LT6119-1 Package Drawing

Order Info

  • Part numbers ending in PBF are lead free. Solder plated terminal finish (SnPb) versions are non-standard and special terms and conditions and pricing applies if available. Please contact LTC marketing for information.
  • Part numbers containing TR or TRM are shipped in tape and reel or 500 unit mini tape and reel, respectively
  • Please refer to our general ordering information or the product datasheet for more details

Package Variations and Pricing

Part Number Package Temp Price
LT6119HMS-1#PBF MS-10 H $3.16 $2.25 Yes
LT6119HMS-1#TRPBF MS-10 H $2.31 Yes
LT6119HMS-2#PBF MS-10 H $3.16 $2.25 Yes
LT6119HMS-2#TRPBF MS-10 H $2.31 Yes
LT6119IMS-1#PBF MS-10 I $2.81 $2.00 Yes
LT6119IMS-1#TRPBF MS-10 I $2.06 Yes
LT6119IMS-2#PBF MS-10 I $2.81 $2.00 Yes
LT6119IMS-2#TRPBF MS-10 I $2.06 Yes
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* The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Linear Technology sales office or authorized distributor.

Demo Boards

Linear Technology offers many demo boards free of charge to qualified customers. Contact your local sales office or distributor to inquire about a demo board. Certain demo boards are also available for sale via credit card on this website. Demo boards are for evaluation purposes only. It remains the customer’s responsibility to verify proper and reliable operation in the actual end application.

Part Number Description Price Documentation
DC2261A-A LT6119-1 | Current Sense Amplifier, Reference and Comparators with POR $50.00
DC2261A-B LT6119-2 | Current Sense Amplifier, Reference and Comparators with POR $50.00
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  • Overcurrent, Undercurrent and Fault Detection
  • Current Shunt Measurement
  • Battery Monitoring
  • Motor Control
  • Automotive Monitoring and Control
  • Industrial Control

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