LTC1258 - Micropower Low Dropout References


  • 200mV Max Dropout at 10mA Output Current
  • 4µA Typical Quiescent Current
  • 0.15% Max Initial Accuracy (S8)
  • No Output Capacitor Required
  • Output Sources 10mA, Sinks 2mA
  • 40ppm/°C Max Drift (S8)
  • Voltage Options: 2.5V, 3V, 4.1V, 5V and Adjustable
  • Available in Small MSOP Package

Typical Application

LTC1258 Typical Application
LTC1258 Typical Application


The LTC1258/LTC1258-2.5/LTC1258-3/LTC1258-4.1/ LTC1258-5 are micropower bandgap references that combine high accuracy and low drift with very low sup- ply current and small package size. The combination of ultralow quiescent current and low dropout voltage of only 200mV maximum makes them ideal for battery-powered equipment. The output voltage is set by an external resistor divider for the adjustable LTC1258.

This series of references uses curvature compensation to obtain low temperature coefficient and trimmed thin-film resistors to achieve high output accuracy. These references can source up to 10mA and sink up to 2mA, making them ideal for precision regulator applications. They are stable without an output bypass capacitor, but are also stable with capacitance up to 1μF This feature is important in . critical applications where PC board space is a premium and fast settling is demanded.

The LTC1258 series references provide power dissipation advantages over shunt references. In addition to supply current, shunt references must also idle the entire load current to operate.

The LTC1258 series is available in the 8-pin MSOP and SO packages.


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
LTC1258CMS8-2.5#PBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CMS8-2.5#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CMS8-3#PBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CMS8-3#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CMS8-4.1#PBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CMS8-4.1#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CMS8-5#PBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CMS8-5#TRPBF MS-8 MS8 C 05-08-1660 Yes
LTC1258CS8-2.5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1258CS8-2.5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1258CS8-3#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1258CS8-3#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1258CS8-4.1#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1258CS8-4.1#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1258CS8-5#PBF SO-8 S8 C 05-08-1610 (S8) Yes
LTC1258CS8-5#TRPBF SO-8 S8 C 05-08-1610 (S8) Yes

LTC1258 Package Drawing
LTC1258 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
LTC1258CMS8-2.5#PBF MS-8 C $2.90 $2.40 Yes
LTC1258CMS8-2.5#TRPBF MS-8 C $2.46 Yes
LTC1258CMS8-3#PBF MS-8 C $2.90 $2.40 Yes
LTC1258CMS8-3#TRPBF MS-8 C $2.46 Yes
LTC1258CMS8-4.1#PBF MS-8 C $2.90 $2.40 Yes
LTC1258CMS8-4.1#TRPBF MS-8 C $2.46 Yes
LTC1258CMS8-5#PBF MS-8 C $2.90 $2.40 Yes
LTC1258CMS8-5#TRPBF MS-8 C $2.46 Yes
LTC1258CS8-2.5#PBF SO-8 C $2.55 $2.10 Yes
LTC1258CS8-2.5#TRPBF SO-8 C $2.16 Yes
LTC1258CS8-3#PBF SO-8 C $2.55 $2.10 Yes
LTC1258CS8-3#TRPBF SO-8 C $2.16 Yes
LTC1258CS8-4.1#PBF SO-8 C $2.55 $2.10 Yes
LTC1258CS8-4.1#TRPBF SO-8 C $2.16 Yes
LTC1258CS8-5#PBF SO-8 C $2.55 $2.10 Yes
LTC1258CS8-5#TRPBF SO-8 C $2.16 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.

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