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LTC1708-PG Datasheet(PDF) 5 Page - Linear Technology

Part No. LTC1708-PG
Description  Dual Adjustable 5-Bit VID High Efficiency, 2-Phase Current Mode Synchronous Buck Regulator Controller
Download  32 Pages
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Maker  LINER [Linear Technology]
Homepage  http://www.linear.com
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LTC1708-PG Datasheet(HTML) 5 Page - Linear Technology

 
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LTC1708-PG
TYPICAL PERFOR A CE CHARACTERISTICS
Internal 5V LDO Line Reg
Maximum Current Sense Threshold
vs Duty Factor
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
INPUT VOLTAGE (V)
0
4.8
4.9
5.1
15
25
1708 G07
4.7
4.6
510
20
30
35
4.5
4.4
5.0
ILOAD = 1mA
DUTY FACTOR (%)
0
0
25
50
75
20
40
60
80
1708 G08
100
PERCENT ON NOMINAL OUTPUT VOLTAGE (%)
0
40
50
60
100
1708 G09
30
20
0
25
50
75
10
80
70
Maximum Current Sense Threshold
vs VRUN/SS (Soft-Start)
VRUN/SS (V)
0
0
20
40
60
80
12
3
4
1708 G10
56
VSENSE(CM) = 1.6V
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
COMMON MODE VOLTAGE (V)
0
72
76
80
4
1708 G11
68
64
60
1
2
3
5
Current Sense Threshold
vs ITH Voltage
VITH (V)
0
30
50
70
90
2
1708 G12
10
–10
20
40
60
80
0
–20
–30
0.5
1
1.5
2.5
INTVCC and EXTVCC Switch
Voltage vs Temperature
Supply Current vs Input Voltage
and Mode (Figure 12)
INPUT VOLTAGE (V)
05
0
400
1000
10
20
25
1708 G04
200
800
600
15
30
35
BOTH
CONTROLLERS ON
STANDBY
SHUTDOWN
EXTVCC Voltage Drop
CURRENT (mA)
0
150
200
250
40
1708 G05
100
50
0
10
20
30
50
TEMPERATURE (
°C)
–50
4.95
5.00
5.05
25
75
1708 G06
4.90
4.85
–25
0
50
100
125
4.80
4.70
4.75
INTVCC VOLTAGE
EXTVCC SWITCHOVER THRESHOLD


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