LTC3563 - 500mA, Synchronous Step-Down DC/DC Converter with Selectable Output Voltage
The switching frequency is internally set at 2.25MHz, allowing the use of small surface mount inductors and capacitors. The LTC3563 is specifically designed to work well with ceramic output capacitors, achieving very low output voltage ripple and a small PCB footprint.
The LTC3563 is configured for the power saving Burst Mode Operation.
Features- High Efficiency: Up to 96%
- Pin Selectable Output Voltage: 1.28V/1.87V
- Low Ripple (<20mVP-P) Burst Mode® Operation:
IQ = 26µA
- Very Low Quiescent Current: Only 26µA
- 2.5V to 5.5V Input Voltage Range
- 2.25MHz Constant Frequency Operation
- Low Dropout Operation: 100% Duty Cycle
- No Schottky Diode Required
- Internal Soft-Start Limits Inrush Current
- Shutdown Mode Draws <1µA Supply Current
- ±2% Output Voltage Accuracy
- Current Mode Operation for Excellent Line and Load Transient Response
- Overtemperature Protected
- Available in 2mm × 2mm 6-Lead DFN
Typical Application
 | Applications- Cellular Telephones
- Wireless and DSL Modems
- Digital Cameras
- MP3 Players
- PDAs and Other Handheld Devices
Packaging |
Order Information
| Part Number | Package | Temp | Price(1-99) | Price (1k)* |
|---|
| LTC3563EDC#PBF | 2x2 DFN-6 | E | $2.29 | |
| LTC3563EDC#TRMPBF | 2x2 DFN-6 | E | $2.29 | $1.65 |
| LTC3563EDC#TRPBF | 2x2 DFN-6 | E | $2.29 | $1.60 |
DatasheetReliability DataPress Release | Related Product- LTC3542 - 500mA, 2.25MHz Synchronous Step-Down DC/DC Converter
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