LTC3261 - High Voltage, Low Quiescent Current Inverting Charge Pump

Features

  • 4.5V to 32V VIN Range
  • Inverting Charge Pump Generates –VIN
  • 60μA Quiescent Current in Burst Mode® Operation
  • Charge Pump Output Current Up to 100mA
  • 50kHz to 500kHz Programmable Oscillator Frequency
  • Short-Circuit/Thermal Protection
  • Low Profile Thermally Enhanced 12-Pin MSOP Package
Designed for Automotive and Transportation Applications
AEC-Q100 generic family data available for specific packages


Typical Application

LTC3261 Typical Application
LTC3261 Typical Application

Description

The LTC®3261 is a high voltage inverting charge pump that operates over a wide 4.5V to 32V input range and is capable of delivering up to 100mA of output current.

The charge pump employs either low quiescent current Burst Mode operation or low noise constant frequency mode. In Burst Mode operation the charge pump VOUT regulates to –0.94 • VIN and the LTC3261 draws only 60μA of quiescent current. In constant frequency mode the charge pump produces an output equal to –VIN and operates at a fixed 500kHz or to a programmed frequency between 50kHz to 500kHz using an external resistor. The LTC3261 is available in a thermally enhanced 12-pin MSOP package.

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
LTC3261EMSE#PBF MS-12E MSE E 05-08-1666 Yes
LTC3261EMSE#TRPBF MS-12E MSE E 05-08-1666 Yes
LTC3261HMSE#PBF MS-12E MSE H 05-08-1666 Yes
LTC3261HMSE#TRPBF MS-12E MSE H 05-08-1666 Yes
LTC3261IMSE#PBF MS-12E MSE I 05-08-1666 Yes
LTC3261IMSE#TRPBF MS-12E MSE I 05-08-1666 Yes
LTC3261MPMSE MS-12E MSE MP 05-08-1666 No
LTC3261MPMSE#PBF MS-12E MSE MP 05-08-1666 Yes
LTC3261MPMSE#TR MS-12E MSE MP 05-08-1666 No
LTC3261MPMSE#TRPBF MS-12E MSE MP 05-08-1666 Yes


LTC3261 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
LTC3261EMSE#PBF MS-12E E $4.10 $2.87 Yes
LTC3261EMSE#TRPBF MS-12E E $2.93 Yes
LTC3261HMSE#PBF MS-12E H $5.19 $3.63 Yes
LTC3261HMSE#TRPBF MS-12E H $3.69 Yes
LTC3261IMSE#PBF MS-12E I $4.71 $3.30 Yes
LTC3261IMSE#TRPBF MS-12E I $3.36 Yes
LTC3261MPMSE MS-12E MP $11.06 $7.74 No
LTC3261MPMSE#PBF MS-12E MP $11.06 $7.74 Yes
LTC3261MPMSE#TR MS-12E MP $7.80 No
LTC3261MPMSE#TRPBF MS-12E MP $7.80 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
DC1882A LTC3261EMSE Demo Board | High Voltage, Low Iq Inverting Charge Pump, 4.5V ≤ VIN ≤ 32V, Vout = -VIN @ 100mA $100.00
Buy Now
Click here to view our complete list of demo boards

Designed for Automotive and Transportation Applications

Please contact your local sales representative for more information regarding reliability reports and AEC-Q100 data 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
LTC3261HMSE#PBF MS-12E H $5.19 $3.63 Yes
LTC3261HMSE#TRPBF MS-12E H $3.69 Yes
LTC3261IMSE#PBF MS-12E I $4.71 $3.30 Yes
LTC3261IMSE#TRPBF MS-12E I $3.36 Yes
LTC3261MPMSE#PBF MS-12E MP $11.06 $7.74 Yes
LTC3261MPMSE#TRPBF MS-12E MP $7.80 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

  • Bipolar/Inverting Supplies
  • Industrial/Instrumentation Bias Generators
  • Portable Medical Equipment
  • Portable Instruments

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Design Tools

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LTC3261

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