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
AEC-Q100 data available for specific packages
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 |
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 Now • Request Samples | ||||||
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 | |||
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 Now • Request Samples | ||||||
Applications
- Current Shunt Measurement
- Battery Monitoring
- Power Management
- Motor Control
- Lamp Monitoring
- Overcurrent and Fault Detection
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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:
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Models for the following parts are available in LTspice:
LT6106
Technical Support
- For immediate technical assistance, contact your local sales office or distributor or call 1-800-4-LINEAR (US customers only) or 408-432-1900.
- For less urgent requests, please complete our Technical Support Request Form. Please allow 2-3 business days for reply.
