Datasheet LTC4015 (Analog Devices) - 28

LTC4015
OPERATION
CHARGER_ SUSPENDED* NO BATTERY BAT_MISSING_ 30 SECOND FAULT TIME OUT BATTERY DETECTION SHORTED BAT_SHORT_ FAULT BATTERY BATTERY VOLTAGE STABLE MAX_CHARGE_TIMER STARTS BATTERY VOLTAGE > 2.85V/CELL BATTERY VOLTAGE < 2.85 VCELL MAX_CHARGE_TIME VBAT < 35% PASSED BATTERY VOLTAGE OF VCHARGE > 2.9 V/CELL MAX_CHARGE_TIME_FAULT CC_CV_CHARGE PRECHARGE NTC_RATIO NTC_RATIO BELOW JEITA_T7 BELOW JEITA_T7 OR ABOVE JEITA_T1 OR ABOVE JEITA_T1 TO NTC TO NTC BATTERY AT VCHARGE (CV) PAUSE PAUSE RETURN TO PREVIOUS —AND— CHARGE STATE ICHG < C_OVER_X_THRESHOLD —AND— MAX_CV_TIME PASSED EN_C_OVER_X_TERM = 1 NTC_RATIO WITH BATTERY AT BETWEEN JEITA_T7 VCHARGE (CV) AND JEITA_T1 NTC_PAUSE RECHARGE THRESHOLD REACHED TIMER_TERM C_OVER_X_TERM NTC_RATIO OUT OF RANGE RECHARGE THRESHOLD REACHED TO BAT_MISSING_ FAULT * NOTE: ALL STATES RETURN TO CHARGER SUSPENDED IF ANY OF THE FOLLOWING OCCUR: A. THE INPUT VOLTAGE VIN FALLS TO WITHIN 100mV OF THE BATSENS PIN VOLTAGE. B. SUSPEND_CHARGER IS WRITTEN TO 1 VIA THE SERIAL PORT. C. A SYSTEM FAULT OCCURS (VIN OVERVOLTAGE LOCKOUT, 2P5VCC UNDERVOLTAGE LOCKOUT, INTVCC UNDERVOLTAGE LOCKOUT, DRVCC UNDERVOLTAGE LOCKOUT. THERMAL SHUTDOWN, MISSING RT RESISTOR, OR INVALID COMBINATION OF CELLS PINS). 4015 F05a
Figure 5A. Li-Ion Battery Charging State Diagram
4015fb 28 For more information www.linear.com/LTC4015 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Data Sheet Conventions Pin Configuration Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram I2C Timing Diagram Operation Applications Information Register Description DETAILED Register Descriptions Typical Applications Package Description Revision History Typical Application Related Parts