Datasheet LTC1760 (Analog Devices) - 8

LTC1760
TYPICAL PERFORMANCE CHARACTERISTICS Dual Battery Charge Time vs Charging Voltage Accuracy Charging Current Accuracy Sequential Battery Charging
0 10 3500 3000 BAT1 BAT2 CURRENT CURRENT 5 2500 –5 2000
SEQUENTIAL
1500 0 1000 –10 500 0 –5 3500 –15 3000 BAT1 –10 2500 CURRENT BAT2 BATTERY CURRENT (mA) 2000 CURRENT
DUAL
–20 1500 Voltage()–ChargingVoltage() (mV) Current()–ChargingCurrent() (mA) –15 1000 500 100 MINUTES –25 –20 0 4700 7132 9564 11996 14428 16860 0 800 1600 2400 3200 4000 0 50 100 150 200 250 300 ChargingVoltage() (mV) ChargingCurrent() (mA) TIME (MINUTES) 1760 G01 1760 G02 BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020) REQUESTED CURRENT = 3A REQUESTED VOLTAGE = 12.3V MAX CHARGER CURRENT = 4.1A 1760 G03
Dual Battery Discharge Time vs Dual Battery Dischage Time vs Dual Charging Batteries with Sequential Battery Discharge Sequential Battery Discharge Different Charge State (Li-Ion) (NiMH)
17.0 3500 15 BAT2 12.0 BAT1 VOLTAGE
DUAL
14 16.5 VOLTAGE BAT1 3000 11.0 BAT2 13
DUAL
VOLTAGE BATTERY CURRENT (mA) BAT2 VOLTAGE 16.0 2500 10.0 VOLTAGE 12 BAT1 9.0 11 VOLTAGE 15.5 2000 8.0 BAT2 10 VOLTAGE
SEQUENTIAL
BAT2 15.0 1500 15 12.0 VOLTAGE BAT1
SEQUENTIAL
14 CURRENT 11.0 BATTERY VOLTAGE (V) 14.5 1000 BATTERY VOLTAGE (V) BATTERY VOLTAGE (V) 13 BAT1 10.0 BAT1 VOLTAGE BAT2 12 14.0 500 VOLTAGE CURRENT 9.0 11 11 16 MINUTES MINUTES 13.5 0 8.0 10 0 20 40 60 80 100 120 140 160 0 20 40 60 80 100 120 140 160 180 0 20 40 60 80 100 120 140 TIME (MINUTES) 1760 G04 TIME (MINUTES) TIME (MINUTES) BAT1 INITIAL CAPACITY = 0% BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020) BATTERY TYPE: 12V NiMH (MOLTECH NJ1020) BAT2 INITIAL CAPACITY = 90% LOAD CURRENT = 3A 1760 G05 1760 G06 LOAD: 33W PROGRAMMED CHARGER CURRENT = 3A PROGRAMMED CHARGER VOLTAGE = 16.8V 1760fc 8 For more information www.linear.com/LTC1760