BQ24650,pdf(Synchronous Switch

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上传日期: 2010-11-05

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The bq24650 is a highly integrated switch-mode battery charge controller. It provides input voltage regulaTIon, which reduces charge current when input voltage falls below a programmed level. When the input is powered by a solar panel, the input regulaTIon loop lowers the charge current so that the solar panel can provide maximum power output.

The bq24650 offers a constant-frequency synchronous PWM controller with high accuracy current and voltage regulaTIon, charge precondiTIoning, charge termination, and charge status monitoring.

The bq24650 charges the battery in three phases: pre-conditioning, constant current, and constant voltage. Charge is terminated when the current reaches 1/10 of the fast charge rate.

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