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Boost Voltage Convertor Circuit Composed Of LTC1700

2014-11-24 14:45  
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Boost Voltage Convertor Circuit Composed Of LTC1700
The picture shows the convertor circuit composed of LTC1700. This is a simple circuit to convert the 3.3V voltage to 5V voltage. The LTC1700 is a PWM integrated controller with MSOP package, 530kHz working frequency and current mode. Its effciency could be maximum 95%. And it also has the new function that not using resistor to detect main MOSFET current. So it needn't the sensing resistor. In the circuit shown in picture (a), it only consume 180pA current in the dormancy mode. So it is best suitable for the portable type devices standby power-saving mode. For the practical products, if the input/output ports connect the LC filter, it would make the noise lower.