CHARGE PROTECTION CIRCUIT WITH TIMING FUNCTION

摘要

A charge protection circuit with a timing function is disclosed. The circuit includes a charge protection module constituting of a second switch, a second capacitor and a control integrated circuit (IC). The second switch Q2 is switched to turn on or turn off to charge or discharge the lithium-ion battery. The second capacitor configured for setting a delay time of a Ct terminal of the control IC, thus to prevent the battery from being overcharged. The circuit further includes a charge timing circuit configured for predetermining a time threshold value. When the charge time reaches the time threshold value, the charge timing circuit outputs a second high level signal to charge the second capacitor. The second capacitor triggers the control IC to turn off the second switch, thereby terminating the charge of the battery body.