LP4054锂电池充电管理IC芯片
LP4054锂电池充电管理IC芯片
LP4054锂电池充电管理IC芯片
LP4054锂电池充电管理IC芯片
企业名:深圳市联益微电子有限公司
类型:原厂制造商
电话: 15013544455
手机:15013544455
联系人:王伟
邮箱:wangwei@szlianyi.cn
地址:广东深圳深圳市福田区新洲九街嘉葆润金座A栋1509-1513室
LP4054锂电池充电管理IC芯片
General Description
The LP4054 is a complete constant-current/constant- voltage linear charger for single cell lithium-ion batteries. Its SOT23-5 package and low external component count make the LP4054 ideally suited for portable applications. Furthermore, the LP4054 is specifically designed to work within USB power specifications. No external sense resistor is needed, and no blocking diode is required due to the internal MOSFET architecture. Thermal feedback regulates the charge current to limit the die temperature during high power operation or high ambient temperature. The charge voltage is fixed at 4.2V, and the charge current can be programmed externally with a single resistor. The LP4054 automatically terminates the charge cycle when the charge current drops to 1/10th the programmed value after the final float voltage is reached. When the input supply (wall adapter or USB supply) is removed, the LP4054 automatically enters a low current state, dropping the battery drain current to less than 1μA. Other features include charge current monitor, automatic recharge and a status pin to indicate charge termination and the presence of an input voltage.
Applications
Portable Media Players/MP3 players Cellular and Smart mobile phone PDA/DSC Bluetooth Applications Features
Programmable Charge Current Up to 500mA No MOSFET, Sense Resistor or Blocking Diode Required Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating 4.2V Charge Voltage with ± 1% Accuracy Charge Current Monitor Output for Gas Gauging Automatic Recharge 2.9V Trickle Charge Threshold C/10 Charge Termination Output OCP Charging OTP Package in SOT23-5
企业名:深圳市联益微电子有限公司
类型:原厂制造商
电话: 15013544455
手机:15013544455
联系人:王伟
邮箱:wangwei@szlianyi.cn
地址:广东深圳深圳市福田区新洲九街嘉葆润金座A栋1509-1513室
友情链接: 深圳市元东发电子有限公司