LTC1517-3.3 - Micropower, Regulated 3.3V Charge Pump in a 5-Pin SOT-23 Package
Features
- Ultralow Power: Icc = 6µA Typ
- Short-Circuit/Thermal Protected
- 3.3V +/-4% Regulated Output
- VIN Range: 2V to 4.4V
- Output Current: 8mA (VIN >/=2V) 15mA (VIN >/=2.5V)
- No Inductors
- Ultrasmall Application Circuit (0.045in2)
- 700kHz Switching Frequency
- Available in 5-Pin SOT-23
Typical Application
Description
The LTC1517-3.3 is a micropower charge pump DC/DC converter that produces a regulated 3.3V output. The input voltage range is 2V to 4.4V, allowing a single cell lithium battery to produce a regulated 3.3V output over the entire life of the battery. Extremely low operating current (typically 6µA with no load) and low external parts count (one 0.1µF flying capacitor and two small bypass capacitors at VIN and VOUT) make the part ideally suited for small, light load battery-powered applications. The total printed circuit board area of the application circuit shown below is only 0.045in2.
The part operates as a Burst Mode’ switched-capacitor voltage doubler to produce a regulated output. The part has thermal shutdown capability and can survive a continuous short circuit from VOUT to GND. The device is available in a 5-pin SOT-23 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 |
|---|---|---|---|---|---|
| LTC1517CS5-3.3#PBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1517CS5-3.3#TRMPBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1517CS5-3.3#TRPBF | SOT-23 | S5 | C | 05-08-1635 | Yes |
| LTC1517ES5-3.3#PBF | SOT-23 | S5 | E | 05-08-1635 | Yes |
| LTC1517ES5-3.3#TRMPBF | SOT-23 | S5 | E | 05-08-1635 | Yes |
| LTC1517ES5-3.3#TRPBF | SOT-23 | S5 | E | 05-08-1635 | 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 | |
|---|---|---|---|---|---|---|
| LTC1517CS5-3.3#PBF | SOT-23 | C | $2.57 | Yes | ||
| LTC1517CS5-3.3#TRMPBF | SOT-23 | C | $2.57 | $2.02 | Yes | |
| LTC1517CS5-3.3#TRPBF | SOT-23 | C | $2.57 | $2.00 | Yes | |
| LTC1517ES5-3.3#PBF | SOT-23 | E | $2.31 | Yes | ||
| LTC1517ES5-3.3#TRMPBF | SOT-23 | E | $2.31 | $2.13 | Yes | |
| LTC1517ES5-3.3#TRPBF | SOT-23 | E | $2.31 | $2.11 | 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.Click here to view our complete list of demo boards
Applications
- Cellular Telephones
- Battery-Operated Equipment
- Local Power Supplies
- Handheld Instruments
- PCMCIA Supplies
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Design Tools
LTspice
LTspice® software is a powerful, fast and free simulation tool, schematic capture and waveform viewer with enhancements and models for improving the simulation of switching regulators. Click here to download LTspice
Models for the following parts are available in LTspice:
LTC1517-3.3
LTC1517-5
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.
