| 摘要 |
PROBLEM TO BE SOLVED: To provide a charging circuit capable of performing effective charging with a charging current of a value suitable for a device operation state and stabilizing temperature variation in a device.SOLUTION: In the step-down switching system charging circuit configured to charge a secondary battery through a switching element that is controlled to be opened and closed by a pulse width control signal output from pulse width control means and charging current detection means, the charging current detection means is a MOSFET. |
