XC5011

XC5011 _______________________________________________________ XC5011 1mA~200mA Linear Li-Ion Battery Charger GENERAL DESCRIPTION FEATURES The XC5011 is a complete constant current & constant voltage linear charger for single cell lithium-ion batteries. Its SOT package and low external component count make the XC5011 ideally suited for portable applications. Furthermore, the XC5011 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 XC5011 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 XC5011 automatically enters a low current state, dropping the battery drain current to less than 2uA. The XC5011 can be put into shutdown mode, reducing the supply current to 50uA. Other features include under-voltage lockout, automatic recharge and one status pin to indicate charge and charge termination. Programmable Charge Current Up to 200mA No MOSFET, Sense Resistor or Blocking Diode Required Complete Linear Charger in SOT Package for single Cell Lithium-Ion Batteries Constant-Current/Constant-Voltage Operation with Thermal Regulation to Maximize Charge Rate Without Risk of Overheating Charges Single Cell Li-Ion Batteries Directly from USB Port Preset 4.2V Charge Voltage with ±1% Accuracy Charge Current Monitor Output for Gas Gauging Automatic Recharge C/10 Charge Termination 50uA Supply Current in Shutdown 2.9V Trickle Charge Threshold Soft-Start Limits Inrush Current ESD HBM 8KV Available in SOT23-5 Package APPLICATIONS Wearable device Small capacity battery charger application Bluetooth 、GPS Applications Figure1 . Typical Application Circuit Suzhou XySemi Electronic Technology Co., Limited. - 1 - www.xysemi.com.cn Ver 0.3 XC5011 ______________________________________________________________________________________________________________________ ORDERING INFORMATION PART NUMBER TEMP RANGE VIN VBAT CHARGE CURRENT PACKAGE PINS XC5011 -40°C to 85°C 4.5~6V 4.2V 1mA~200mA SOT23 5 PIN CONFIGURATION Figure 2. PIN Configuration PIN DESCRIPTION PIN NUMBER 1, PIN NAME PIN DESCRIPTION /CHRG Open-Drain Charge Status Output. 2 GND Ground 3 BAT Charge Current Output. 4 VCC Positive Input Supply Voltage. 5 PROG Charge Current Program, Charge Current Monitor and Shutdown Pin. ABSOLUTE MAXIMUM RATINGS (Note: Do not exceed these limits to prevent damage to the device. Exposure to absolute maximum rating conditions for long periods may affect device reliability.) PARAMETER VALUE UNIT Input Supply Voltage VCC VSS-0.3～VSS+7 V PROG pin Voltage Vprog VSS-0.3～Vcc+0.3 V Vss-0.3～7 V BAT pin Voltage Vbat Suzhou XySemi Electronic Technology Co., Limited. -2- www.xysemi.com.cn Ver 0.3 XC5011 ______________________________________________________________________________________________________________________ CHAG pin Voltage Vchrg VSS-0.3～VSS+7 V BAT pin Current Ibat 0.25 A PROG pin Current Iprog Operating Ambient Temperature 2.5 mA -40 to 85 °C Maximum Junction Temperature Storage Temperature 150 °C -55 to 150 °C 260 °C Lead Temperature (Soldering, 10 sec) ELECTRICAL CHARACTERISTICS (VCC = 5.0V, Vbat=3.5V TA= 25C unless otherwise specified) PARAMETER Input Voltage Range Input supply current BAT pin Current SYMBOL TEST CONDITIONS VCC Icc Ibat MIN TYP 4.25 MAX UNIT 6.5 V Charge mode, RPROG =1K 350 2000 uA Standby mode 150 500 uA Shutdown mode(RPROG not connected,Vcc