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LTC1759 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC1759
Description  Smart Battery Charger
PDF  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC1759 Datasheet(HTML) 6 Page - Linear Technology

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



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