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LTC3550 Datasheet(PDF) 6 Page - Linear Technology

Part # LTC3550
Description  Dual Input USB/AC Adapter Li-Ion Battery Charger with 600mA Buck Converter
PDF  24 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3550 Datasheet(HTML) 6 Page - Linear Technology

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background image
LTC3550
6
3550fa
Charge Current
vs Ambient Temperature
Charge Current
vs DCIN Voltage
Charge Current vs Battery Voltage
USBIN Power FET On-Resistance
vs Temperature
EN Pin Threshold Voltage
(On-to-Off) vs Temperature
DCIN Shutdown Current
vs Temperature
USBIN Shutdown Current
vs Temperature
TYPICAL PERFOR A CE CHARACTERISTICS T
A = 25°C, unless otherwise noted.
1000
800
600
400
200
0
3550 G10
TEMPERATURE (
°C)
–50
25
75
–25
0
50
100
125
VDCIN = VUSBIN = 5V
VBAT = 4V
θJA = 40°C/W
RIDC = 1.25k
RIDC = RIUSB = 2k
ONSET OF
THERMAL REGULATION
VDCIN (V)
3550 G11
900
800
700
600
500
400
300
4.0
5.0
6.0
6.5
4.5
5.5
7.0
7.5
8.0
RIDC = 1.25k
VBAT = 4V
θJA = 40°C/W
ONSET OF
THERMAL REGULATION
VBAT (V)
2.4
1000
800
600
400
200
0
3.0
3.6
3.9
3550 G12
2.7
3.3
4.2
4.5
VDCIN = VUSBIN = 5V
θJA = 40°C/W
RIDC = 1.25k
TEMPERATURE (
°C)
–50
550
500
450
400
350
300
250
25
75
3550 G13
–25
0
50
100
125
VBAT = 4V
IBAT = 200mA
TEMPERATURE (
°C)
–50
25
75
–25
0
50
100
125
800
750
700
650
600
550
500
450
400
350
3550 G14
VBAT = 4V
IBAT = 200mA
TEMPERATURE (
°C)
–50
25
75
–25
0
50
100
900
850
800
750
700
650
600
3550 G15
VDCIN = VUSBIN = 5V
TEMPERATURE (
°C)
–50
25
75
–25
0
50
100
3550 G16
50
45
40
35
30
25
20
15
10
5
0
VDCIN = 8V
VDCIN = 5V
VDCIN = 4.3V
ENABLE = 5V
TEMPERATURE (
°C)
–50
25
75
–25
0
50
100
45
40
35
30
25
20
15
10
5
0
3550 G17
VUSBIN = 8V
VUSBIN = 5V
VUSBIN = 4.3V
ENABLE = 0V
3550 G44
TEMPERATURE (
°C)
–50
25
75
–25
0
50
100
900
850
800
750
700
650
600
VDCIN = VUSBIN = 5V
HPWR Pin Threshold Voltage
(Rising) vs Temperature
DCIN Power FET On-Resistance
vs Temperature



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