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LTC3552 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3552
Description  Standalone Linear Li-Ion Battery Charger and Dual Synchronous Buck Converter
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3552 Datasheet(HTML) 5 Page - Linear Technology

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LTC3552
5
3552f
TEMPERATURE (
°C)
–50
0
10
20
30
40
60
–25
025
50
3552 G09a
75
100
50
VIN = 5V
VBAT = 2.5V
RPROG = 2k
RPROG = 10k
VIN (V)
4
0
10
20
30
40
60
4.5
5
5.5
6
3552 G09b
6.5
7
50
VBAT = 2.5V
RPROG = 2k
RPROG = 10k
TEMPERATURE (
°C)
–50
2.875
2.900
2.925
25
75
3552 G09c
2.850
2.825
2.800
–25
0
50
2.950
2.975
3.000
100
VIN = 5V
RPROG = 10k
3552 G09
VBAT (V)
2.4
400
500
600
3.3
3.9
300
200
2.7
3
3.6
4.2
4.5
100
0
VIN = 5V
θJA = 40°C/W
RPROG = 2k
Charge Current vs Battery Voltage
VCHRG (V)
0
20
25
30
35
3552 G07
15
10
12
46
7
5
0
TA = –40°C
TA = 25°C
TA = 90°C
VIN = 5V
VBAT = 4V
VPWR (V)
0
20
25
30
35
3552 G08
15
10
12
46
7
5
0
TA = –40°C
TA = 25°C
TA = 90°C
VIN = 5V
VBAT = 4V
⎯C⎯H⎯R⎯G Pin I-V Curve
(Pull-Down State)
⎯P⎯W⎯R Pin I-V Curve
(Pull-Down State)
VIN (V)
0
100
200
300
400
600
3552 G10
500
4
4.5
5
5.5
6
6.5
7
7.5
8
RPROG = 2k
RPROG = 10k
VBAT = 4V
θJA = 40°C/W
TEMPERATURE (
°C)
–50
400
500
600
25
75
3552 G11
300
200
–25
0
50
100
125
100
0
VIN = 5V
VBAT = 4V
θJA = 40°C/W
RPROG = 2k
ONSET OF THERMAL REGULATION
RPROG = 10k
Charge Current vs VIN
Charge Current
vs Ambient Temperature
TYPICAL PERFOR A CE CHARACTERISTICS
Battery Charger
TA = 25°C Unless Otherwise Specified.
Trickle Charge Threshold Voltage
vs Temperature
Trickle Charge Current vs VIN
Trickle Charge Current
vs Temperature



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