Power Management Inductorless (Charge Pump) DC/DC Converters Unregulated Doubling/Inverting Charge Pumps
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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

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

For complete and up to date package information and drawings, please refer to our packaging page

MS-12

LTC3261 Package Drawing

Order Info

Package Variations and Pricing

Part Number Package Pins Temp Price (1-99) Price (1k)* RoHS Data
LTC3261EMSE#PBF MSOP 12 E $4.10 $2.87 View
LTC3261EMSE#TRPBF MSOP 12 E $2.93 View
LTC3261HMSE#PBF MSOP 12 H $5.19 $3.63 View
LTC3261HMSE#TRPBF MSOP 12 H $3.69 View
LTC3261IMSE#PBF MSOP 12 I $4.71 $3.30 View
LTC3261IMSE#TRPBF MSOP 12 I $3.36 View
LTC3261MPMSE#PBF MSOP 12 MP $11.06 $7.74 View
LTC3261MPMSE#TRPBF MSOP 12 MP $7.80 View
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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.

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 I Low Noise Dual Supply Inverting Charge Pump Contact Factory
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Applications

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

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LTC3261

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