LTC1759CG 查看數據表（PDF） - Linear Technology
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LTC1759CG Datasheet PDF : 28 Pages
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LTC1759
TYPICAL PERFOR A CE CHARACTERISTICS
Charger Efficiency
100
16.8V
95
12.6V
90
85
80
75
VIN = 20V
70
0.5
1.5
2.5
3.5
CHARGING CURRENT (A)
1759 G09
Current from Battery vs Battery
Voltage (Does Not Include VDD
Current)
90
TA = 25°C
80
70
60
50
40
30
20
10
6
8 10 12 14 16 18 20 22 24
VBAT (V)
1759 G04
SMBus Accelerator Operation
VCC = 5V
5V CLD = 200pF
TA = 25°C
LTC1759
RPULLUP = 15k
0V
1µs/DIV
1759 G02
IDD vs VDD (Not Charging)
120
TA = 25°C
110
100
90
80
70
60
3.0 3.5 4.0 4.5 5.0 5.5
VDD (V)
1759 G05
Low Current Mode
350
RILIMIT = 33k
300 VIN = 15V
VOUT = 12V
250
TA = 25°C
CPROG = 1nF
RSET = 3.83k
200
150
100
50
0
0 50 100 150 200 250 300
CHARGING CURRENT (mA)
1759 G01
Charging Voltage Error
0
–5
VDD = 5.5V
–10
VDD = 3V
–15
–20
–25
RVLIMIT = 0
LOAD CURRENT = 15mA
TA = 25°C
–30
2000 3000 4000 5000 6000 7000 8000 9000
CHARGING VOLTAGE (mV)
1759 G07
DCDIV Trip Point vs Temperature
1.10
1.05
VDD = 5.5V
1.00
VDD = 3V
0.95
0.90
0
10 20 30 40 50 60 70 80
TEMPERATURE (°C)
1759 G03
Programmed Current Accuracy
0
–10
VDD = 5.5V
–20
VDD = 3V
–30
–40
RILIMIT = 33k
VIN = 15V
–50 VOUT = 12V
TA = 25°C
–60
256
1256
2256
3256
CHARGING CURRENT (mA)
4256
1759 G06
Charging Voltage Error
0
–5
–10
VDD = 5.5V
–15
VDD = 3V
–20
RVLIMIT = 33k
–25 LOAD CURRENT = 15mA
TA = 25°C
–30
2000
6000 10000 14000
CHARGING VOLTAGE (mV)
18000
1759 G08
6
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