Overview
Features and Benefits
- High Efficiency: Up to 96%
- Very Low Quiescent Current: Only 20μA
- 1.25A Output Current
- 2.5V to 5.5V Input Voltage Range
- 2.25MHz Constant Frequency Operation
- No Schottky Diode Required
- Low Dropout Operation: 100% Duty Cycle
- 0.6V Reference Allows Low Output Voltages
- Shutdown Mode Draws ≤ 1μA Supply Current
- Current Mode Operation for Excellent Line and
- Load Transient Response
- Overtemperature Protected
- Low Profile (1mm) ThinSOT™ and 6-Lead (2mm × 3mm) DFN Packages
Product Details
The LTC3564 is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20μA, dropping to ≤1μA in shutdown. The 2.5V to 5.5V input voltage range makes the LTC3564 ideally suited for single Li-Ion battery-powered or 3.3V to 5V input voltage applications. 100% duty cycle provides low drop- out operation, extending battery life in portable systems. Automatic Burst Mode® operation increases efficiency at light loads, further extending battery runtime.
Switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors.
The internal synchronous switch increases efficiency and eliminates the need for an external Schottky diode. Low output voltages are easily supported with the 0.6V feedback reference voltage. The LTC3564 is available in low profile (1mm) ThinSOT and 6-Lead (2mm × 3mm) DFN packages.
Applications
- Cellular Telephones
- Wireless and DSL Modems
- Digital Still Cameras
- Media Players
- Portable Instruments
- Point of Load Regulation
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (2)
Documentation & Resources
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R415 Reliability Data3/23/2018
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DC1343A - Demo Manual9/24/2009
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DC1158A - Demo Manual9/24/2009
Tools & Simulations
LTspice
LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.
To launch ready-to-run LTspice demonstration circuits for this part:
Step 1: Download and install LTspice on your computer.
Step 2: Click on the link in the section below to download a demonstration circuit.
Step 3: If LTspice does not automatically open after clicking the link below, 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.
Models for the following parts are available in LTspice:
LTC3564
Product Recommendations
LTC3564 Companion Parts
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.
| Part Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| LTC3564EDCB#TRMPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 3mm w/ EP) | |
| LTC3564EDCB#TRPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 3mm w/ EP) | |
| LTC3564ES5#TRMPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LTC3564ES5#TRPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LTC3564IDCB#TRMPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 3mm w/ EP) | |
| LTC3564IDCB#TRPBF | Material Declaration | Reliability Data | 6-Lead DFN (2mm x 3mm w/ EP) | |
| LTC3564IS5#TRMPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| LTC3564IS5#TRPBF | Material Declaration | Reliability Data | 5-Lead TSOT-23 | |
| Wafer Fabrication Data | R415 Reliability Data |
Support & Discussions
Sample & Buy
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Buy Now Pricing
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List Pricing
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Lead Times
Please see the latest communication from our CCO regarding lead times.
Sampling
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Evaluation Boards
Pricing displayed is based on 1-piece.
Up to two boards can be purchased through Analog.com. To order more than two, please purchase through one of our listed distributors.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.