New charge pumps offer low input and output noise
Sam Nork
Abstract
New charge pumps that offer low input and output noise are described.
Keywords
Charge pump DC/DC converter
LTC3200
LTC3200-5
Charge pump (inductorless) DC/DC converters are quite popular in space-constrained applications where low to moderate load currents must be supplied. Such converters are available in small packages, operate with very low quiescent current and require minimal external components. However, noise generation is one undesirable characteristic of most charge pumps.
Unwanted noise can create a variety of problems. Noise generated at the power input can interfere with RF transmission and reception in wireless applications. Noise at the output ...
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