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
AEC-Q100 data available for specific packages
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 |
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 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 |
|---|---|---|---|
| DC1882A | LTC3261EMSE Demo Board | High Voltage, Low Iq Inverting Charge Pump, 4.5V ≤ VIN ≤ 32V, Vout = -VIN @ 100mA | $100.00 | |
| 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 | |
|---|---|---|---|---|---|---|
| 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 Now • Request Samples | ||||||
Applications
- Bipolar/Inverting Supplies
- Industrial/Instrumentation Bias Generators
- Portable Medical Equipment
- Portable Instruments
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Design Tools
LTspice
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LTC3261
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.
