DC1260A-A

DC1260A-A demonstration circuit is a high-efficiency synchronous boost converter capable of operating with an input voltage range from 0.7V to 5.5V. The 2X3mm DFN thermally enhanced package with a 1MHZ switching frequency and the 2A internal switches provide a very tiny overall solution. The LTC3539 feature output disconnect, selectable PWM or BURST mode operation, Shutdown capability and the input voltage can be greater or less than the output voltage. This demonstration circuit allows the user to quickly evaluate the LTC3528 performance. Jumpers are provided for selecting several regulated output voltages, and jumpers for low quiescent current shutdown and PWM/BURST mode. Terminals on the board allow easy hookup to an input supply and output load. When Burst mode is selected, the converters automatically enter low quiescent current Burst-Mode operation at low current levels and return to fixed frequency PWM operation at higher current levels.

• 650mV VIN, input start-up voltage at 25°C
• 90% efficiency at 25°C
• 8mV p-p output ripple voltage (burst mode) at VIN = 1.5V, VOUT = 3.3V IOUT = 3mA
• 15mV p-p output ripple voltage (fixed frequency) at VIN = 1.5V, VOUT = 3.3V IOUT = 300mA

附註

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