Signal Conditioning Voltage References Series Voltage References
Signal Conditioning Voltage References Micropower Voltage References

LT1790 - Micropower SOT-23 Low Dropout Reference Family

Features

  • High Accuracy:
    A Grade—0.05% Max
    B Grade—0.1% Max
  • Low Drift:
    A Grade—10ppm/°C Max
    B Grade—25ppm/°C Max
  • Low Thermal Hysteresis 40ppm (Typical) –40°C to 85°C
  • Low Supply Current: 60µA Max
  • Sinks and Sources Current
  • Low Dropout Voltage
  • Guaranteed Operational –40°C to 125°C
  • Wide Supply Range to 18V
  • Available Output Voltage Options: 1.25V, 2.048V,2.5V, 3V, 3.3V, 4.096V and 5V
  • Low Profile (1mm) ThinSOT™ Package
Designed for Automotive and Transportation Applications
AEC-Q100 data available for specific packages

Typical Application

LT1790 Typical Application
LT1790 Typical Application

Description

The LT1790 is a family of SOT-23 micropower low dropout series references that combine high accuracy and low drift with low power dissipation and small package size. These micropower references use curvature compensation to obtain a low temperature coefficient and trimmed precision thin-film resistors to achieve high output accuracy. In addition, each LT1790 is post-package trimmed to greatly reduce the temperature coefficient and increase the output accuracy. Output accuracy is further assured by excellent line and load regulation. Special care has been taken to minimize thermally induced hysteresis.

The LT1790s are ideally suited for battery-operated systems because of their small size, low supply current and reduced dropout voltage. These references provide supply current and power dissipation advantages over shunt references that must idle the entire load current to operate. Since the LT1790 can also sink current, it can operate as a micropower negative voltage reference with the same performance as a positive reference.

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
LT1790ACS6-1.25#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-1.25#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-1.25#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-2.048#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-2.048#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-2.048#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-2.5#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-2.5#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-2.5#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-3.3#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-3.3#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-3.3#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-3#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-3#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-3#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-4.096#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-4.096#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-4.096#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-5#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-5#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790ACS6-5#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790AIS6-1.25#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-1.25#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-1.25#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-2.048#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-2.048#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-2.048#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-2.5#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-2.5#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-2.5#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-3.3#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-3.3#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-3.3#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-3#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-3#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-3#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-4.096#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-4.096#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-4.096#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-5#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-5#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790AIS6-5#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BCS6-1.25#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-1.25#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-1.25#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-2.048#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-2.048#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-2.048#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-2.5#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-2.5#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-2.5#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-3.3#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-3.3#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-3.3#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-3#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-3#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-3#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-4.096#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-4.096#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-4.096#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-5#PBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-5#TRMPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BCS6-5#TRPBF SOT-23 S6 C 05-08-1636 Yes
LT1790BIS6-1.25#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-1.25#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-1.25#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-2.048#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-2.048#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-2.048#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-2.5#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-2.5#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-2.5#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-3.3#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-3.3#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-3.3#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-3#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-3#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-3#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-4.096#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-4.096#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-4.096#TRPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-5#PBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-5#TRMPBF SOT-23 S6 I 05-08-1636 Yes
LT1790BIS6-5#TRPBF SOT-23 S6 I 05-08-1636 Yes


LT1790 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
LT1790ACS6-1.25#PBF SOT-23 C $3.42 Yes
LT1790ACS6-1.25#TRMPBF SOT-23 C $3.42 $2.93 Yes
LT1790ACS6-1.25#TRPBF SOT-23 C $3.42 $2.91 Yes
LT1790ACS6-2.048#PBF SOT-23 C $3.42 Yes
LT1790ACS6-2.048#TRMPBF SOT-23 C $3.42 $2.93 Yes
LT1790ACS6-2.048#TRPBF SOT-23 C $3.42 $2.91 Yes
LT1790ACS6-2.5#PBF SOT-23 C $3.42 Yes
LT1790ACS6-2.5#TRMPBF SOT-23 C $3.42 $2.93 Yes
LT1790ACS6-2.5#TRPBF SOT-23 C $3.42 $2.91 Yes
LT1790ACS6-3.3#PBF SOT-23 C $3.42 Yes
LT1790ACS6-3.3#TRMPBF SOT-23 C $3.42 $2.93 Yes
LT1790ACS6-3.3#TRPBF SOT-23 C $3.42 $2.91 Yes
LT1790ACS6-3#PBF SOT-23 C $3.42 Yes
LT1790ACS6-3#TRMPBF SOT-23 C $3.42 $2.93 Yes
LT1790ACS6-3#TRPBF SOT-23 C $3.42 $2.91 Yes
LT1790ACS6-4.096#PBF SOT-23 C $3.42 Yes
LT1790ACS6-4.096#TRMPBF SOT-23 C $3.42 $2.93 Yes
LT1790ACS6-4.096#TRPBF SOT-23 C $3.42 $2.91 Yes
LT1790ACS6-5#PBF SOT-23 C $3.42 Yes
LT1790ACS6-5#TRMPBF SOT-23 C $3.42 $2.93 Yes
LT1790ACS6-5#TRPBF SOT-23 C $3.42 $2.91 Yes
LT1790AIS6-1.25#PBF SOT-23 I $3.82 Yes
LT1790AIS6-1.25#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-1.25#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-2.048#PBF SOT-23 I $3.82 Yes
LT1790AIS6-2.048#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-2.048#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-2.5#PBF SOT-23 I $3.82 Yes
LT1790AIS6-2.5#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-2.5#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-3.3#PBF SOT-23 I $3.82 Yes
LT1790AIS6-3.3#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-3.3#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-3#PBF SOT-23 I $3.82 Yes
LT1790AIS6-3#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-3#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-4.096#PBF SOT-23 I $3.82 Yes
LT1790AIS6-4.096#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-4.096#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-5#PBF SOT-23 I $3.82 Yes
LT1790AIS6-5#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-5#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790BCS6-1.25#PBF SOT-23 C $1.51 Yes
LT1790BCS6-1.25#TRMPBF SOT-23 C $1.51 $1.27 Yes
LT1790BCS6-1.25#TRPBF SOT-23 C $1.51 $1.25 Yes
LT1790BCS6-2.048#PBF SOT-23 C $1.51 Yes
LT1790BCS6-2.048#TRMPBF SOT-23 C $1.51 $1.27 Yes
LT1790BCS6-2.048#TRPBF SOT-23 C $1.51 $1.25 Yes
LT1790BCS6-2.5#PBF SOT-23 C $1.51 Yes
LT1790BCS6-2.5#TRMPBF SOT-23 C $1.51 $1.27 Yes
LT1790BCS6-2.5#TRPBF SOT-23 C $1.51 $1.25 Yes
LT1790BCS6-3.3#PBF SOT-23 C $1.51 Yes
LT1790BCS6-3.3#TRMPBF SOT-23 C $1.51 $1.27 Yes
LT1790BCS6-3.3#TRPBF SOT-23 C $1.51 $1.25 Yes
LT1790BCS6-3#PBF SOT-23 C $1.51 Yes
LT1790BCS6-3#TRMPBF SOT-23 C $1.51 $1.27 Yes
LT1790BCS6-3#TRPBF SOT-23 C $1.51 $1.25 Yes
LT1790BCS6-4.096#PBF SOT-23 C $1.51 Yes
LT1790BCS6-4.096#TRMPBF SOT-23 C $1.51 $1.27 Yes
LT1790BCS6-4.096#TRPBF SOT-23 C $1.51 $1.25 Yes
LT1790BCS6-5#PBF SOT-23 C $1.51 Yes
LT1790BCS6-5#TRMPBF SOT-23 C $1.51 $1.27 Yes
LT1790BCS6-5#TRPBF SOT-23 C $1.51 $1.25 Yes
LT1790BIS6-1.25#PBF SOT-23 I $2.12 Yes
LT1790BIS6-1.25#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-1.25#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-2.048#PBF SOT-23 I $2.12 Yes
LT1790BIS6-2.048#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-2.048#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-2.5#PBF SOT-23 I $2.12 Yes
LT1790BIS6-2.5#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-2.5#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-3.3#PBF SOT-23 I $2.12 Yes
LT1790BIS6-3.3#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-3.3#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-3#PBF SOT-23 I $2.12 Yes
LT1790BIS6-3#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-3#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-4.096#PBF SOT-23 I $2.12 Yes
LT1790BIS6-4.096#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-4.096#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-5#PBF SOT-23 I $2.12 Yes
LT1790BIS6-5#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-5#TRPBF SOT-23 I $2.12 $1.56 Yes
Buy Now • Request 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.

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
LT1790AIS6-1.25#PBF SOT-23 I $3.82 Yes
LT1790AIS6-1.25#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-1.25#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-2.048#PBF SOT-23 I $3.82 Yes
LT1790AIS6-2.048#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-2.048#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-2.5#PBF SOT-23 I $3.82 Yes
LT1790AIS6-2.5#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-2.5#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-3.3#PBF SOT-23 I $3.82 Yes
LT1790AIS6-3.3#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-3.3#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-3#PBF SOT-23 I $3.82 Yes
LT1790AIS6-3#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-3#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-4.096#PBF SOT-23 I $3.82 Yes
LT1790AIS6-4.096#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-4.096#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790AIS6-5#PBF SOT-23 I $3.82 Yes
LT1790AIS6-5#TRMPBF SOT-23 I $3.82 $3.33 Yes
LT1790AIS6-5#TRPBF SOT-23 I $3.82 $3.31 Yes
LT1790BIS6-1.25#PBF SOT-23 I $2.12 Yes
LT1790BIS6-1.25#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-1.25#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-2.048#PBF SOT-23 I $2.12 Yes
LT1790BIS6-2.048#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-2.048#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-2.5#PBF SOT-23 I $2.12 Yes
LT1790BIS6-2.5#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-2.5#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-3.3#PBF SOT-23 I $2.12 Yes
LT1790BIS6-3.3#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-3.3#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-3#PBF SOT-23 I $2.12 Yes
LT1790BIS6-3#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-3#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-4.096#PBF SOT-23 I $2.12 Yes
LT1790BIS6-4.096#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-4.096#TRPBF SOT-23 I $2.12 $1.56 Yes
LT1790BIS6-5#PBF SOT-23 I $2.12 Yes
LT1790BIS6-5#TRMPBF SOT-23 I $2.12 $1.58 Yes
LT1790BIS6-5#TRPBF SOT-23 I $2.12 $1.56 Yes
Buy Now • Request 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

  • Handheld Instruments
  • Negative Voltage References
  • Industrial Control Systems
  • Data Acquisition Systems
  • Battery-Operated Equipment

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LTspice

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Models for the following parts are available in LTspice:
LT1790-1.25
LT1790-2.048
LT1790-2.5
LT1790-3
LT1790-3.3
LT1790-4.096
LT1790-5

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