器件名称:
LA5621M
功能描述:
Lithium-Ion Battery Charge Control IC
文件大小:
94.28KB 共6页
简 介:
Ordering number :EN5640A Monolithic linear IC LA5621M, 5621V Lithium-Ion Battery Charge Control IC Overview The LA5621M and LA5621V are external charge control ICs for lithium-ion batteries. These ICs are ideally suited for on/off control of external power MOSFETs in systems that incorporate a charging circuit in the set. They detect the charge and discharge status, output it to the set control microcontroller, which then outputs a signal to switch external power MOSFETS either on or off. Moreover, these ICs have a built-in function that detects discharge (countercurrent) from lithium-ion batteries within sets to external lithium-ion batteries in an AC adapter/charger, etc. and switches external power MOSFETs off. Countercurrent detection and control: In systems that support charging of both the set of the video camera, etc., and the AC adapter/charger, when spare batteries are charged on the AC adapter/charger side, if the battery voltage on the set side becomes high when the set is connected to the AC adapter/charger, current flows out to the battery on the AC adapter/charger side. These ICs feature a function that prevents this from happening. Charge prevention: A specified voltage is applied to the CHARGEINH pin to stop charging. Features The combination of a microcontroller and external power MOSFETs enables easy charge/discharge control of lithium-ion batteries. Small power dissipation makes these ICs suitable for sets that require long time operation Use of c……
