LT1300 - Micropower High Efficiency 3.3/5V Step-Up DC/DC Converter
Features
- Up to 220mA Output Current at 5V from 2V Supply
- Supply Voltage as Low as 1.8V
- Up to 88% Efficiency
- Small Inductor -10µH
- 120µA Quiescent Current
- Shutdown to 10µA
- Programmable 3.3V or 5V Output
- ILIM Pin Programs Peak Switch Current
- Low VCESAT Switch: 170mV at 1A Typical
- Uses Inexpensive Surface Mount Inductors
- 8-Lead DIP or SOIC Package
Typical Application
Description
The LT1300 is a micropower step-up DC/DC converter that utilizes Burst Mode operation. The device can deliver 5V or 3.3V from a two-cell battery input. It features programmable 5V or 3.3V output via a logic-controlled input, no-load quiescent current of 120µA and a shutdown pin which reduces supply current to 10µA. The on-chip power switch has a low 170mV saturation voltage at a switch current of 1A, a four-fold reduction over prior designs. A 155kHz internal oscillator allows the use of extremely small surface mount inductors and capacitors. Operation is guaranteed at 1.8V input. This allows more energy to be extracted from the battery increasing operating life. The ILIM pin can be used to program peak switch current with a single resistor allowing the use of less expensive and smaller inductors and capacitors in lighter load applications. The LT1300 is available in an 8-lead SOIC package, minimizing board space requirements. For a 5V/12V Selectable Out-put Converter see the LT1301. For increased output current see the LT1302.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 |
|---|---|---|---|---|---|
| LT1300CN8#PBF | N-8 | N | C | 05-08-1510 (N8) | Yes |
| LT1300CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1300CS8#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | 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 | |
|---|---|---|---|---|---|---|
| LT1300CN8#PBF | N-8 | C | $3.33 | $2.55 | Yes | |
| LT1300CS8#PBF | SO-8 | C | $3.33 | $2.55 | Yes | |
| LT1300CS8#TRPBF | SO-8 | C | $2.61 | 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 |
|---|---|---|---|
| DC035A | LT1300CS8 | MICROPOWER HIGH EFFICIENCY STEP-UP DC/DC | Contact Factory | |
| Buy Now | |||
Applications
- Palmtop Computers
- Portable Instruments
- Bar-Code Scanners
- DC/DC Converter Module Replacements
- Battery Backup Supplies
- Personal Digital Assistants
- PCMCIA Cards
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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:
LT1300
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.
