Datasheet LTC4015 (Analog Devices) - 10

LTC4015
TYPICAL PERFORMANCE CHARACTERISTICS TA = 25°C, application circuit 1 unless otherwise noted. Lead-Acid Charging Profile Li-Ion Charging Profile LiFePO4 Charging Profile Voltage, Current vs Time Voltage, Current vs Time Voltage, Current vs Time
15.0 3.5 8.6 8 15.0 8 CHARGE VOLTAGE VCHARGE = 4.2V/CELL VCHARGE = 3.6V/CELL 14.5 CHARGE CURRENT 3.0 8.4 7 14.5 CELLCOUNT = 4 7 CELLCOUNT = 2 14.0 BA 6 BA 14.0 6 BA 2.5 TTER 8.2 TTER TTER 13.5 Y CURRENT (A) 5 Y CURRENT (A) 13.5 5 Y CURRENT (A) TAGE (V) 2.0 TAGE (V) 8.0 TAGE (V) 13.0 4 13.0 4 Y VOL 1.5 Y VOL 7.8 Y VOL 12.5 3 12.5 3 TTER TTER TTER BA CELLCOUNT = 6 1.0 BA 7.6 12.0 BA RSNSI = 0.007Ω 2 12.0 2 RSNSB = 0.010Ω 11.5 0.5 V 7.4 ABSORB = 2.4V/CELL 1 CHARGE VOLTAGE 11.5 1 CHARGE VOLTAGE VCHARGE = 2.2V/CELL CHARGE CURRENT CHARGE CURRENT 11.0 0 7.2 0 11.0 0 0 50 100 150 200 250 0 15 30 45 60 75 90 105 120 135 0 15 30 45 60 75 90 105 120 135 TIME (MINUTES) TIME (MINUTES) TIME (MINUTES) 4015 G01 4015 G02 4015 G03
VIN (Resistive), MPPT Enabled Lead-Acid Charging Efficiency Charger On/Off Li-Ion Charging Efficiency vs VIN vs ICHARGE
30 96 100 VIN RESISTANCE 4.5Ω 94 25 VIN, MPPT ENABLED 95 VIN/2, CHARGER OFF V 92 BAT + 1V ICHARGE 20 90 VCHARGE = 4.2V/CELL 90 VBAT HELD AT 6.6V 15 88 85 86 CHARGER ON (V) 10 EFFICIENCY (%) V EFFICIENCY (%) BAT HELD AT 7.4V 80 V IN 84 CELLCOUNT = 2 5 ICHARGE = 0.75A VIN = 24V 82 I 75 CHARGE = 4A VBAT HELD AT 12.2V ICHARGE = 8A CELLCOUNT = 6 0 80 10 15 20 25 30 35 10 15 20 25 30 70 0 1 2 3 4 5 6 7 8 VIN, CHARGER OFF (V) VIN (V) I 4015 G04 4015 G05 CHARGE (A) 4015 G06
LiFePO4 Charging Efficiency Charge Voltage (CV Mode) VRSNSB Current (CC Mode) vs ICHARGE vs Junction Temperature vs Junction Temperature
98 8.405 32.02 0.25 96 8.400 32.00 0.00 ICHARGE 31.98 –0.25 94 8.395 VRSNSB 31.96 –0.50 92 TAGE (V) 8.390 (V) ERROR (%) 31.94 –0.75 90 8.385 V RSNSB I 31.92 FULL-SCALE VRSNSB –1.00 EFFICIENCY (%) CHARGE = 0 I ERROR FROM 25°C 88 CHARGE VOL 8.380 CHARGE = 100mA 31.90 –1.25 V Li-Ion 4.2V/CELL CHARGE VOLTAGE Li-Ion 4.2V/CELL CHARGE VOLTAGE 86 IN = 30V 8.375 31.88 –1.50 V V V BAT HELD AT 23.5V IN = 12V IN = 12.V, VBAT = 8V CELLCOUNT = 7 CELLCOUNT = 2 CELLCOUNT = 2 31.86 –1.75 84 8.370 –50 –30 –10 10 30 50 70 90 110 130 0 1 2 3 4 5 6 7 8 –50 –30 –10 10 30 50 70 90 110 130 JUNCTION TEMPERATURE (°C) I JUNCTION TEMPERATURE (°C) CHARGE (A) 4015 G09 4015 G08 4015 G07 4015fb 10 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