LTC3529 - 1.5A, 1.5MHz Step-Up DC/DC Converter in 2mm × 3mm DFN
Features
- Compact Solution for 5V USB On-The-Go VBUS Power
- 5V at 500mA from Single Li-Ion Cell
- Automatic Fault Detection
- High Efficiency: Up to 95%
- VIN Range: 1.8V to 5.25V
- Fixed 5V Output
- Short Circuit Protection
- 1.5MHz Low Noise, Fixed Frequency PWM
- Inrush Current Limiting and Internal Soft-Start
- Output Disconnect
- <1μA Quiescent Current in Shutdown
- VIN > VOUT Operation
- 8-Lead, 2mm × 3mm DFN Package
Typical Application
Description
The LTC3529 is a 5V output, synchronous, fixed frequency step-up DC/DC converter optimized for USB On-The-Go (OTG) hosting applications. This compact USB OTG 5V VBUS converter features a 1.5MHz switching frequency, internal compensation and a tiny 2mm × 3mm DFN package. The LTC3529 can operate from input voltages as low as 1.8V.USB OTG-specific features include a fault fl ag with 22ms deglitching to indicate when the bus is overloaded, output disconnect and short circuit protection. Following a fault, the LTC3529 can be programmed to either latch-off or restart after a time-out duration.
Additional features include a <1μA shutdown mode, soft-start, inrush current limiting and thermal overload protection. Anti-ring circuitry reduces EMI during low power operation. The LTC3529 is offered in an 8-Lead 2mm × 3mm × 0.75mm DFN 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 |
|---|---|---|---|---|---|
| LTC3529EDCB#PBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| LTC3529EDCB#TRMPBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | Yes |
| LTC3529EDCB#TRPBF | 2x3 DFN-8 | DCB | E | 05-08-1718 | 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 | |
|---|---|---|---|---|---|---|
| LTC3529EDCB#PBF | 2x3 DFN-8 | E | $2.93 | Yes | ||
| LTC3529EDCB#TRMPBF | 2x3 DFN-8 | E | $2.93 | $2.10 | Yes | |
| LTC3529EDCB#TRPBF | 2x3 DFN-8 | E | $2.93 | $2.05 | 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 |
|---|---|---|---|
| DC1226A | LTC3529EDCB Demoboard | 1.5A, 2.35MHz Step-Up DC/DC Converter in 2mm x 3mm DFN | Contact Factory | |
| Buy Now | |||
Applications
- Personal Media Players
- Digital Video Cameras
- Digital Multimedia Broadcast Tuners
- Digital Cameras
- Smart Phones
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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
To launch a ready to run LTspice demonstration circuit for this part:
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- Step 3: If LTspice does not automatically open after clicking the link above, you can instead run the simulation by right clicking on the link and selecting "Save Target As." After saving the file to your computer, start LTspice and open the demonstration circuit by selecting 'Open' from the 'File' menu
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Models for the following parts are available in LTspice:
LTC3529
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.
