SL1054

SL1054 Advanced Lithium-Ion Linear Battery Charger General Description SL1054 is a single Lithium-Ion or Lithium-Polymer cell linear battery charger which is designed for compact and cost-sensitive handheld devices. It combines charge status indication, charge termination, battery temperature monitoring, and high accuracy current and voltage regulation in a SOP-8 package. SL1054 charges the battery in three modes, precharge, constant current, constant voltage. If the battery voltage is below the precharge threshold VO(MIN), the SL1054 precharges the battery with a lower conditioning current. After precharge, the SL1054 applies a constant current to the battery. An external sense-resister sets the charge current. The constant voltage mode continues until the battery reaches the regulation The battery temperature is continuously measured by an external thermistor through the TS pin. SL1054 inhibits charge until the temperature is within the range defined by users. Features For Single Lithium-Ion or Lithium-Polymer Cell Battery Pack 4.2V A Few External Components are Required Precharge, Constant Current, Constant Voltage Modes Battery Temperature Monitor Charge Status Indication Automatic Battery Recharge Charge Termination Detect Auto Low Power Sleep Mode when VDD Power is removed MSOP-8 Package RoHS Compliant and 100% Lead (Pb)-Free Applications Digital Cameras PDAs Cellular Phones Information Appliance Pin Configurations www.junyi-ic.com Typical Application Circuit SL1054 ...