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參數(shù)資料
| 型號(hào)： | LTC1760 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | Dual Smart Battery System Manager |
| 中文描述： | 雙智能電池系統(tǒng)管理 |
| 文件頁(yè)數(shù)： | 7/44頁(yè) |
| 文件大?。?/td> | 379K |
| 代理商： | LTC1760 |
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LTC1760
7
sn1760 1760is
TYPICAL PERFOR U
Efficiency vs Charging Current
Dual Battery Charge Time vs
Sequential Battery Charging
Dual Battery Discharge Time vs
Sequential Battery Discharge
I
OUT
(A)
0
0
E
10
30
40
50
100
70
0.025
0.10
1960 G14
20
80
90
60
0.50
2.5
4.0
TIME (MINUTES)
B
3500
3000
2500
2000
1500
1000
500
0
3500
3000
2500
2000
1500
1000
500
0
1960 G10
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
TIME (MINUTES)
0
B
120
12.0
11.0
10.0
9.0
8.0
12.0
11.0
10.0
9.0
8.0
1960 G12
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
ELECTRICAL CHARACTERISTICS
Note 8.
C
LOAD
is the combined capacitance on the host’s SMBus
connection and the selected battery’s SMBus connection.
Note 9.
C
LOAD_MAX
is the maximum allowed combined capacitance on
THxA, THxB and the battery’s SafetySignalx connections.
Note 10.
Does not include current supplied by V
CC
to V
CC2
(I
VCC2_AC1
or
I
VCC2_AC0
)
Note 11.
Measured with thermistors not present, R
VILIM
and R
ILIM
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/R
SENSE
may not servo correctly
due to charger offsets. The charging current for requested currents below
4mV/R
SENSE
will be between 4mV/R
SENSE
and (Requested Curent – 8mA).
Refer to Applications Information: “Setting Charger Output Current Limit”
for values of R
SENSE
.
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.
Load Dump
TIME (ms)
–4 –2
B
14
12
10
8
6
4
2
0
1960 G05
4
2
10 12
14
16
0
6
8
V
IN
= 20V
VDAC = 12.29V
IDAC = 3000mA
LOAD CURRENT = 1A
T
A
= 25
°
C
BAT1
OUTPUT
LOAD
CONNECTED
LOAD
DISCONNECTED
CHARGE CURRENT (mA)
0
B
4000
1960 G06
1000
2000
3000
12.4
12.3
12.2
12.1
12.0
11.9
11.8
11.7
11.6
V
= 20V
VDAC = 12.288V
IDAC = 4000mA
T
A
= 25
°
C
Load Regulation
Dual Charging Batteries with
Different Charge State
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
B
120
1760 G07
40
80
160
17.0
16.5
16.0
15.5
15.0
14.5
14.0
13.5
20
60
100
140
B
3500
3000
2500
2000
1500
1000
500
0
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