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LTC3729EG Datasheet(PDF) 5 Page - Linear Technology

Part # LTC3729EG
Description  550kHz, PolyPhase, High Efficiency, Synchronous Step-Down Switching Regulator
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3729EG Datasheet(HTML) 5 Page - Linear Technology

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5
LTC3729
sn3729 3729fas
Internal 5V LDO Line Reg
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)
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
Current Sense Threshold
vs ITH Voltage
INTVCC and EXTVCC Switch
Voltage vs Temperature
Supply Current vs Input Voltage
and Mode
EXTVCC Voltage Drop
TYPICAL PERFOR A CE CHARACTERISTICS
INPUT VOLTAGE (V)
05
0
400
1000
10
20
25
3729 G04
200
800
600
15
30
35
ON
SHUTDOWN
CURRENT (mA)
0
150
200
250
40
3729 G05
100
50
0
10
20
30
50
TEMPERATURE (
°C)
–50
4.95
5.00
5.05
25
75
3729 G06
4.90
4.85
–25
0
50
100
125
4.80
4.70
4.75
INTVCC VOLTAGE
EXTVCC SWITCHOVER THRESHOLD
INPUT VOLTAGE (V)
0
4.8
4.9
5.1
15
25
3729 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
3729 G08
100
PERCENT ON NOMINAL OUTPUT VOLTAGE (%)
0
40
50
60
100
3729 G09
30
20
0
25
50
75
10
80
70
VRUN/SS (V)
0
0
20
40
60
80
12
3
4
3729 G10
56
VSENSE(CM) = 1.6V
COMMON MODE VOLTAGE (V)
0
72
76
80
4
3729 G11
68
64
60
1
2
3
5
VITH (V)
0
30
50
70
90
2
3729 G12
10
–10
20
40
60
80
0
–20
–30
0.5
1
1.5
2.5


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