特点
High Efficiency: Up to 96%
Pin Selectable Output Voltage: 1.28V/1.87V
Low Ripple (<20mV
P-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
典型应用
典型应用
描述
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.