LT6106 - Low Cost, 36V High Side Current Sense Amplifier

Features

  • Gain Configurable with Two Resistors
  • Low Offset Voltage: 250µV Maximum
  • Output Current: 1mA Maximum
  • Supply Range: 2.7V to 36V, 44V Absolute Maximum
  • Low Input Bias Current: 40nA Maximum
  • PSRR: 106dB Minimum
  • Low Supply Current: 65µA Typical, V+ = 12V
  • Operating Temperature Range: –40°C to 125°C
  • Low Profile (1mm) ThinSOT Package
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages


Typical Application

LT6106 Typical Application
LT6106 Typical Application

Description

The LT6106 is a versatile high side current sense amplifier. Design flexibility is provided by the excellent device characteristics: 250µV maximum offset and 40nA maximum input bias current. Gain for each device is set by two resistors and allows for accuracy better than 1%.

The LT6106 monitors current via the voltage across an external sense resistor (shunt resistor). Internal circuitry converts input voltage to output current, allowing for a small sense signal on a high common mode voltage to be translated into a ground referenced signal. The low DC offset allows for monitoring very small sense voltages. As a result, a small valued shunt resistor can be used, which minimizes the power loss in the shunt.

The wide 2.7V to 44V input voltage range, high accuracy and wide operating temperature range make the LT6106 ideal for automotive, industrial and power management applications. The very low power supply current of the LT6106 also makes it suitable for low power and battery operated applications.

Packaging

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
Drawing
RoHS
LT6106CS5#PBF SOT-23 S5 C 05-08-1635 Yes
LT6106CS5#TRMPBF SOT-23 S5 C 05-08-1635 Yes
LT6106CS5#TRPBF SOT-23 S5 C 05-08-1635 Yes
LT6106HS5#PBF SOT-23 S5 H 05-08-1635 Yes
LT6106HS5#TRMPBF SOT-23 S5 H 05-08-1635 Yes
LT6106HS5#TRPBF SOT-23 S5 H 05-08-1635 Yes
LT6106IS5#TRMPBF SOT-23 S5 I 05-08-1635 Yes
LT6106IS5#TRPBF SOT-23 S5 I 05-08-1635 Yes


LT6106 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
(1-99)
Price
(1k)*
RoHS
LT6106CS5#PBF SOT-23 C $1.17 Yes
LT6106CS5#TRMPBF SOT-23 C $1.17 $0.87 Yes
LT6106CS5#TRPBF SOT-23 C $1.17 $0.82 Yes
LT6106HS5#PBF SOT-23 H $1.35 Yes
LT6106HS5#TRMPBF SOT-23 H $1.35 $0.99 Yes
LT6106HS5#TRPBF SOT-23 H $1.35 $0.94 Yes
LT6106IS5#TRMPBF SOT-23 I $1.21 $0.92 Yes
LT6106IS5#TRPBF SOT-23 I $1.21 $0.87 Yes
Buy NowRequest Samples
* 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
DC1240A LT6106 Current Sense Demo Board $50.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

AEC-Q100 data is available for these specific part numbers. Please contact your local sales representative for more information regarding reliability reports or to inquire about parts that are not included. For more information, view our Automotive and Transportation page

Part Number Package Temp Price
(1-99)
Price
(1k)*
RoHS
LT6106HS5#PBF SOT-23 H $1.35 Yes
LT6106HS5#TRMPBF SOT-23 H $1.35 $0.99 Yes
LT6106HS5#TRPBF SOT-23 H $1.35 $0.94 Yes
Buy NowRequest Samples
* 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.

Applications

  • Current Shunt Measurement
  • Battery Monitoring
  • Power Management
  • Motor Control
  • Lamp Monitoring
  • Overcurrent and Fault Detection

Product Notifications

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Design Tools

LTspice

LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice

To launch a ready to run LTspice demonstration circuit for this part:

  • Step 1: If you have not installed LTspice on this computer, download and install LTspice
  • Step 2: Once LTspice is installed, click on the link(s) below to launch the simulation
  • Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu

To explore other ready to run LTspice demonstration circuits, please visit our Demo Circuits Collection.

Models for the following parts are available in LTspice:
LT6106

Technical Support