LTC1760(2003) データシートの表示（PDF） - Linear Technology
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LTC1760 Datasheet PDF : 44 Pages
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LTC1760
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.
TYPICAL PERFOR A CE CHARACTERISTICS
Charging Voltage Accuracy
0
–5
–10
–15
–20
–25
4700
7132 9564 11996 14428 16860
ChargingVoltage() (mV)
1760 G01
Charging Current Accuracy
10
5
0
–5
–10
–15
–20
0
800 1600 2400 3200 4000
ChargingCurrent() (mA)
1760 G02
Dual Battery Charge Time vs
Sequential Battery Charging
3500
3000
2500
BAT1
CURRENT
BAT2
CURRENT
2000
1500
SEQUENTIAL
1000
500
0
3500
3000
2500
2000
BAT1
CURRENT
BAT2
CURRENT
DUAL
1500
1000
500
0
0
100
MINUTES
50 100 150 200 250 300
TIME (MINUTES)
BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020)
REQUESTED CURRENT = 3A
REQUESTED VOLTAGE = 12.3V
MAX CHARGER CURRENT = 4.1A
1760 G03
Dual Charging Batteries with
Different Charge State
17.0
BAT2
VOLTAGE
16.5
BAT1
VOLTAGE
16.0
3500
3000
2500
15.5
2000
15.0
1500
BAT1
14.5
CURRENT
1000
14.0
BAT2
CURRENT
500
13.5
0
0
20 40 60 80 100 120 140 160
TIME (MINUTES)
1760 G04
BAT1 INITIAL CAPACITY = 0%
BAT2 INITIAL CAPACITY = 90%
PROGRAMMED CHARGER CURRENT = 3A
PROGRAMMED CHARGER VOLTAGE = 16.8V
Dual Battery Discharge Time vs
Sequential Battery Discharge
(Li-Ion)
12.0
BAT1
11.0
VOLTAGE
DUAL
BAT2
10.0
VOLTAGE
9.0
8.0
BAT2
VOLTAGE
12.0
SEQUENTIAL
11.0
10.0
9.0
8.0
0
BAT1
VOLTAGE
11
MINUTES
20 40 60 80 100 120 140 160 180
TIME (MINUTES)
BATTERY TYPE: 10.8V Li-Ion (MOLTECH NI2020)
LOAD CURRENT = 3A
1760 G05
Dual Battery Dischage Time vs
Sequential Battery Discharge
(NiMH)
15
14
BAT2
13
VOLTAGE DUAL
12
BAT1
11
VOLTAGE
10
BAT2
15
VOLTAGE SEQUENTIAL
14
13
BAT1
VOLTAGE
12
11
16
10
MINUTES
0 20 40 60 80 100 120 140
TIME (MINUTES)
BATTERY TYPE: 12V NiMH (MOLTECH NJ1020)
LOAD: 33W
1760 G06
1760f
7
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