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LTC1760CFW Datasheet(PDF) 7 Page - Linear Technology |
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LTC1760CFW Datasheet(HTML) 7 Page - Linear Technology |
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7 / 44 page  LTC1760 7 1760f TYPICAL PERFOR A CE CHARACTERISTICS ELECTRICAL CHARACTERISTICS Note 10. Does not include current supplied by VCC to VCC2 (IVCC2_AC1 or IVCC2_AC0) Note 11. Measured with thermistors not present, RVILIM and RILIM removed and SMBALERT = 1. See Applications Information section: “Calculating IC Operating Current” for example on how to calculate total IC operating current. Note 12. Requested currents below 44mV/RSENSE may not servo correctly due to charger offsets. The charging current for requested currents below 4mV/RSENSE will be between 4mV/RSENSE and (Requested Current – 8mA). Refer to Applications Information: “Setting Charger Output Current Limit” for values of RSENSE. Note 13. This limit is greater than the absolute maximum for the charger. Therefore, there is no effective limitation for the voltage when this option is selected. Charging Voltage Accuracy ChargingVoltage() (mV) 4700 –10 –5 0 14428 1760 G01 –15 –20 –25 7132 9564 11996 16860 ChargingCurrent() (mA) –20 –10 0 10 –15 –5 5 800 1600 2400 3200 1760 G02 4000 0 TIME (MINUTES) 3500 3000 2500 2000 1500 1000 500 0 3500 3000 2500 2000 1500 1000 500 0 1760 G03 0 50 100 150 200 250 300 BAT1 CURRENT BAT2 CURRENT SEQUENTIAL DUAL BAT1 CURRENT 100 MINUTES BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020) REQUESTED CURRENT = 3A REQUESTED VOLTAGE = 12.3V MAX CHARGER CURRENT = 4.1A BAT2 CURRENT Dual Battery Charge Time vs Sequential Battery Charging Dual Battery Discharge Time vs Sequential Battery Discharge (Li-Ion) Dual Charging Batteries with Different Charge State Charging Current Accuracy BAT2 VOLTAGE BAT2 CURRENT BAT1 CURRENT BAT1 VOLTAGE BAT1 INITIAL CAPACITY = 0% BAT2 INITIAL CAPACITY = 90% PROGRAMMED CHARGER CURRENT = 3A PROGRAMMED CHARGER VOLTAGE = 16.8V TIME (MINUTES) 0 120 1760 G04 40 80 160 17.0 16.5 16.0 15.5 15.0 14.5 14.0 13.5 20 60 100 140 3500 3000 2500 2000 1500 1000 500 0 TIME (MINUTES) 0 120 12.0 11.0 10.0 9.0 8.0 12.0 11.0 10.0 9.0 8.0 1760 G05 20 180 40 60 80 100 140 160 BAT1 VOLTAGE BAT1 VOLTAGE DUAL SEQUENTIAL BAT2 VOLTAGE BAT2 VOLTAGE BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020) LOAD CURRENT = 3A 11 MINUTES TIME (MINUTES) 0 120 20 40 60 80 100 140 15 14 13 12 11 10 15 14 13 12 11 10 1760 G06 BAT2 VOLTAGE BAT2 VOLTAGE BAT1 VOLTAGE BAT1 VOLTAGE BATTERY TYPE: 12V NiMH (MOLTECH NJ1020) LOAD: 33W 16 MINUTES DUAL SEQUENTIAL Dual Battery Dischage Time vs Sequential Battery Discharge (NiMH) |
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