Datasheet LTC1759 (Analog Devices) - 6
| Manufacturer | Analog Devices |
| Description | Smart Battery Charger |
| Pages / Page | 28 / 6 — TYPICAL PERFOR A CE CHARACTERISTICS. Charger Efficiency. SMBus … |
| File Format / Size | PDF / 302 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Charger Efficiency. SMBus Accelerator Operation. DCDIV Trip Point vs Temperature
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LTC1759
W U TYPICAL PERFOR A CE CHARACTERISTICS Charger Efficiency SMBus Accelerator Operation DCDIV Trip Point vs Temperature
100 1.10 VCC = 5V 16.8V 5V CLD = 200pF 95 TA = 25°C 12.6V 1.05 V 90 DD = 5.5V LTC1759 85 1.00 V R DCDIV (V) DD = 3V PULLUP = 15k EFFICIENCY (%) 80 0V 0.95 75 VIN = 20V 70 0.90 0.5 1.5 2.5 3.5 0 10 20 30 40 50 60 70 80 CHARGING CURRENT (A) 1µs/DIV TEMPERATURE (°C) 1759 G02 1759 G09 1759 G03
Current from Battery vs Battery Voltage (Does Not Include VDD Current) IDD vs VDD (Not Charging) Programmed Current Accuracy
90 120 0 TA = 25°C TA = 25°C 80 110 –10 VDD = 5.5V 70 100 –20 60 µA) VDD = 3V ( µA) 50 ( 90 –30 I BAT I DD 40 80 –40 30 RILIMIT = 33k VIN = 15V 70 OUTPUT CURRENT ERROR (mA) –50 20 VOUT = 12V TA = 25°C 10 60 –60 6 8 10 12 14 16 18 20 22 24 3.0 3.5 4.0 4.5 5.0 5.5 256 1256 2256 3256 4256 VBAT (V) VDD (V) CHARGING CURRENT (mA) 1759 G04 1759 G05 1759 G06
Low Current Mode Charging Voltage Error Charging Voltage Error
350 0 0 RILIMIT = 33k 300 VIN = 15V –5 VDD = 5.5V –5 VOUT = 12V TA = 25°C 250 V CPROG = 1nF –10 VDD = 3V DD = 5.5V –10 RSET = 3.83k 200 –15 –15 150 VDD = 3V –20 –20 100 OUTPUT CURRENT (mA) RVLIMIT = 0 RVLIMIT = 33k OUTPUT VOLTAGE ERROR (mV) –25 LOAD CURRENT = 15mA OUTPUT VOLTAGE ERROR (mV) –25 LOAD CURRENT = 15mA 50 TA = 25°C TA = 25°C 0 –30 –30 0 50 100 150 200 250 300 2000 3000 4000 5000 6000 7000 8000 9000 2000 6000 10000 14000 18000 CHARGING CURRENT (mA) CHARGING VOLTAGE (mV) CHARGING VOLTAGE (mV) 1759 G01 1759 G07 1759 G08 6
W U TYPICAL PERFOR A CE CHARACTERISTICS Charger Efficiency SMBus Accelerator Operation DCDIV Trip Point vs Temperature
100 1.10 VCC = 5V 16.8V 5V CLD = 200pF 95 TA = 25°C 12.6V 1.05 V 90 DD = 5.5V LTC1759 85 1.00 V R DCDIV (V) DD = 3V PULLUP = 15k EFFICIENCY (%) 80 0V 0.95 75 VIN = 20V 70 0.90 0.5 1.5 2.5 3.5 0 10 20 30 40 50 60 70 80 CHARGING CURRENT (A) 1µs/DIV TEMPERATURE (°C) 1759 G02 1759 G09 1759 G03
Current from Battery vs Battery Voltage (Does Not Include VDD Current) IDD vs VDD (Not Charging) Programmed Current Accuracy
90 120 0 TA = 25°C TA = 25°C 80 110 –10 VDD = 5.5V 70 100 –20 60 µA) VDD = 3V ( µA) 50 ( 90 –30 I BAT I DD 40 80 –40 30 RILIMIT = 33k VIN = 15V 70 OUTPUT CURRENT ERROR (mA) –50 20 VOUT = 12V TA = 25°C 10 60 –60 6 8 10 12 14 16 18 20 22 24 3.0 3.5 4.0 4.5 5.0 5.5 256 1256 2256 3256 4256 VBAT (V) VDD (V) CHARGING CURRENT (mA) 1759 G04 1759 G05 1759 G06
Low Current Mode Charging Voltage Error Charging Voltage Error
350 0 0 RILIMIT = 33k 300 VIN = 15V –5 VDD = 5.5V –5 VOUT = 12V TA = 25°C 250 V CPROG = 1nF –10 VDD = 3V DD = 5.5V –10 RSET = 3.83k 200 –15 –15 150 VDD = 3V –20 –20 100 OUTPUT CURRENT (mA) RVLIMIT = 0 RVLIMIT = 33k OUTPUT VOLTAGE ERROR (mV) –25 LOAD CURRENT = 15mA OUTPUT VOLTAGE ERROR (mV) –25 LOAD CURRENT = 15mA 50 TA = 25°C TA = 25°C 0 –30 –30 0 50 100 150 200 250 300 2000 3000 4000 5000 6000 7000 8000 9000 2000 6000 10000 14000 18000 CHARGING CURRENT (mA) CHARGING VOLTAGE (mV) CHARGING VOLTAGE (mV) 1759 G01 1759 G07 1759 G08 6
