Overview: Machine Translated by Google Shenzhen Fuman Electronics Group Co., Ltd. SHEN ZHEN FINE MADE ELECTRONICS GROUP CO., LTD. IC LTH7R. (File No.: S&CIC1679) Charger management 1. Overview
LTH7R. is a constant current/constant voltage charger chip, mainly used for charging single-cell lithium batteries. No external detection resistor is required, and its internal structure is MOSFET, so no external reverse diode is required.
LTH7R. can automatically adjust the charging current to limit the chip temperature under high power and high ambient temperature. Its charging voltage is fixed at 4.2V, and the charging current can be adjusted by an external resistor. When the floating charge voltage is reached and the charging current drops to 1/10 of the setting circuit, LTH7R. automatically terminates the charging process. When the input voltage is removed, LTH7R. automatically enters low current mode and draws less than 2uA of current from the battery . When LTH7R. enters standby mode, the supply current is less than 25uA.
The LTH7R.
