Linear Technology LTC1760, Руководство пользователя

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LTC1760
8
1760fc
For more information www.linear.com/LTC1760
TYPICAL PERFORMANCE CHARACTERISTICS
Dual Charging Batteries with
Different Charge State
Dual Battery Discharge Time vs
Sequential Battery Discharge
(Li-Ion)
Dual Battery Dischage Time vs
Sequential Battery Discharge
(NiMH)
Charging Voltage Accuracy Charging Current Accuracy
Dual Battery Charge Time vs
Sequential Battery Charging
ChargingVoltage() (mV)
4700
Voltage()–ChargingVoltage() (mV)
–10
–5
0
14428
1760 G01
–15
–20
–25
7132 9564 11996 16860
ChargingCurrent() (mA)
–20
Current()–ChargingCurrent() (mA)
–10
0
10
–15
–5
5
800 1600 2400 3200
1760 G02
4000 0
TIME (MINUTES)
BATTERY CURRENT (mA)
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
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
BATTERY VOLTAGE (V)
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
BATTERY CURRENT (mA)
3500
3000
2500
2000
1500
1000
500
0
TIME (MINUTES)
0
BATTERY VOLTAGE (V)
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
BATTERY VOLTAGE (V)
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