LT1513C View Datasheet(PDF) - Linear Technology
Part Name
Description
MFG CO.
'LT1513C' PDF : 16 Pages View PDF
LT1513/LT1513-2
TYPICAL PERFORMANCE CHARACTERISTICS
Switch Saturation Voltage
vs Switch Current
1.0
150°C
0.9
100°C
25°C
0.8
0.7
0.6
0.5
–55°C
0.4
0.3
0.2
0.1
0
0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 3.2 3.6 4.0
SWITCH CURRENT (A)
LT1513 • G01
Switch Current Limit
vs Duty Cycle
6
5
25°C AND
4
125°C
–55°C
3
2
1
0
0 10 20 30 40 50 60 70 80 90 100
DUTY CYCLE (%)
LT1513 • G02
Minimum Input Voltage
vs Temperature
3.0
2.8
2.6
2.4
2.2
2.0
1.8
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1513 • G03
Negative Feedback Input Current
vs Temperature
0
–10
–20
–30
–40
Output Charging Characteristics
Showing Constant-Current and
Constant-Voltage Operation
12
MAXIMUM AVAILABLE
CHARGING CURRENT
10
WITH 12V INPUT
VIN = 12V
8
(A)
(B)
(A) 8.4V BATTERY
I CHRG = 0.5A
6
(B) 8.4V BATTERY
I CHRG = 1A
4
(C) 4.2V BATTERY
I CHRG = 1.5A
(C)
2
–50
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1513 • G06
Minimum Peak-to-Peak
Synchronization Voltage vs Temperature
3.0
fSYNC = 700kHz
2.5
2.0
1.5
1.0
0.5
0
–50 –25 0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1513 • G04
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
CHARGING CURRENT (A)
1513 G07
Feedback Input Current
vs Temperature
800
700 VFB = VREF
600
500
400
300
200
100
0
–50 –25
0 25 50 75 100 125 150
TEMPERATURE (°C)
LT1513 • G05
4
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