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LTC3727LXEUH-1 Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3727LXEUH-1
Description  High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3727LXEUH-1 Datasheet(HTML) 5 Page - Linear Technology

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5
LTC3727LX-1
3727lx1fa
Maximum Current Sense Threshold
vs Duty Factor
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
Maximum Current Sense Threshold
vs VRUN/SS (Soft-Start)
Current Sense Threshold
vs ITH Voltage
Load Regulation
VITH vs VRUN/SS
TYPICAL PERFOR A CE CHARACTERISTICS
DUTY FACTOR (%)
0
0
25
50
75
100
125
150
20
40
60
80
3727LX1 G07
100
PERCENT OF NOMINAL OUTPUT VOLTAGE (%)
0
90
120
150
80
3727LX1 G08
60
30
75
105
135
45
15
0
20
40
60
100
VRUN/SS (V)
0
50
75
100
125
150
12
3
4
3727LX1 G09
56
VSENSE(CM) = 1.6V
VITH (V)
0
25
50
75
1.5
2.5
3727LX1 G10
0
–25
–50
0.5
1.0
2.0
100
125
150
LOAD CURRENT (A)
0
–0.2
–0.1
4
3727LX1 G11
–0.3
–0.4
1
2
3
5
0.0
FCB = 0V
VIN = 15V
FIGURE 1
VRUN/SS (V)
0
0
0.5
1.0
1.5
2.0
2.5
1
23
4
3727LX1 G12
56
VOSENSE = 0.7V
Supply Current vs Input Voltage
and Mode (Figure 13)
EXTVCC Voltage Drop
INPUT VOLTAGE (V)
0
0
400
1000
10
20
3727LX1 G04
200
800
600
30 32
BOTH
CONTROLLERS ON
SHUTDOWN
CURRENT (mA)
0
60
80
100
30
50
3727LX1 G05
40
20
0
10
20
40
120
140
160
VEXTVCC = 8.5V
Internal 7.5V LDO Line Regulation
INPUT VOLTAGE (V)
0
6.8
6.9
7.1
7.2
7.3
20
7.7
3727LX1 G06
7.0
10
5
25
30
15
32
7.4
7.5
7.6
ILOAD = 1mA


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