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Powering an MSP430 device from a single 1.5-V battery cell is desirable in a number of applications. These applications require the use of a charge-pump based dc/dc converter. In this application report, dc/dc converter basics and selection are discussed, and the implementation of a MSP430-based single-cell thermostat using a TPS60313 dc/dc converter is presented. The current consumption of the single-cell plus dc/dc converter solution is compared, and finally the expected battery life is calculated.

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