LT1304 - Micropower DC/DC Converters with Low-Battery Detector Active in Shutdown
Features
- 5V at 200mA from Two Cells
- 10µA Quiescent Current in Shutdown
- Operates with VIN as Low as 1.5V
- Low-Battery Detector Active in Shutdown
- Low Switch VCESAT: 370mV at 1A Typical
- 120µA Quiescent Current in Active Mode
- Switching Frequency Up to 300kHz
- Programmable Peak Current with One Resistor
- 8-Lead SO Package
Typical Application
Description
The LT1304 is a micropower step-up DC/DC converter ideal for use in small, low voltage, battery-operated systems. The devices operate from a wide input supply range of 1.5V to 8V. The LT1304-3.3 and LT1304-5 generate regulated outputs of 3.3V and 5V and the adjustable LT1304 can deliver output voltages up to 25V. Quiescent current, 120µA in active mode, decreases to just 10µA in shutdown with the low-battery detector still active. Peak switch current, internally set at 1A, can be reduced by adding a single resistor from the ILIM pin to ground. The high speed operation of the LT1304 allows the use of small, surface-mountable inductors and capacitors. The LT1304 is available in an 8-lead SO 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 |
|---|---|---|---|---|---|
| LT1304CS8-3.3#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1304CS8-3.3#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1304CS8-5#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1304CS8-5#TRPBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1304CS8#PBF | SO-8 | S8 | C | 05-08-1610 (S8) | Yes |
| LT1304CS8#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 | |
|---|---|---|---|---|---|---|
| LT1304CS8-3.3#PBF | SO-8 | C | $3.15 | $2.45 | Yes | |
| LT1304CS8-3.3#TRPBF | SO-8 | C | $2.51 | Yes | ||
| LT1304CS8-5#PBF | SO-8 | C | $3.15 | $2.45 | Yes | |
| LT1304CS8-5#TRPBF | SO-8 | C | $2.51 | Yes | ||
| LT1304CS8#PBF | SO-8 | C | $3.15 | $2.45 | Yes | |
| LT1304CS8#TRPBF | SO-8 | C | $2.51 | 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 |
|---|---|---|---|
| DC088A | LT1304CS8-5 | DC/DC CONVERTER, 2-3 CELL TO 5V @ 200mA | $100.00 | |
| Buy Now | |||
Applications
- 2-, 3-, or 4-Cell to 5V or 3.3V Step-Up
- Portable Instruments
- Bar Code Scanners
- Palmtop Computers
- Diagnostic Medical Instrumentation
- Personal Data Communicators/Computers
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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:
LT1304
LT1304-3.3
LT1304-5
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.
