ltc1709eg-trpbf Linear Technology Corporation, ltc1709eg-trpbf Datasheet - Page 5

• Manufacturer Part Number: ltc1709eg-trpbf
• Description: 2-phase, 5-bit Adjustable,high Efficiency, Synchronous Step-down Switching Regulator
• Manufacturer: Linear Technology Corporation

TYPICAL PERFOR A CE CHARACTERISTICS
1000
600
800
400
200
5.1
5.0
4.9
4.8
4.7
4.6
4.5
4.4
20
80
60
40
0
0
0
0
Supply Current vs Input Voltage
and Mode
0
Internal 5V LDO Line Reg
Maximum Current Sense Threshold
vs V
I
V
LOAD
SENSE(CM)
5
5
RUN/SS
SHUTDOWN
1
= 1mA
10
10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 1.6V
(Soft-Start)
2
ON
V
15
15
RUN/SS
3
20
20
(V)
4
25
25
W
30
5
30
1709 G04
1709 G07
1709 G10
U
35
35
6
250
200
100
150
50
0
75
50
25
80
76
64
72
68
60
0
0
EXTV
0
Maximum Current Sense Threshold
vs Duty Factor
0
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
CC
10
20
COMMON MODE VOLTAGE (V)
Voltage Drop
1
DUTY FACTOR (%)
CURRENT (mA)
20
40
2
30
60
3
40
80
4
1709 G05
1709 G08
1709 G11
50
100
5
5.05
5.00
4.90
4.85
4.75
4.70
4.95
4.80
–10
–20
–30
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
0
0
– 50
0
0
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
PERCENT ON NOMINAL OUTPUT VOLTAGE (%)
Current Sense Threshold
vs I
INTV
Voltage vs Temperature
– 25
TH
CC
0.5
EXTV
Voltage
and EXTV
25
0
TEMPERATURE ( C)
CC
SWITCHOVER THRESHOLD
INTV
1
25
V
ITH
50
LTC1709
CC
CC
(V)
50
VOLTAGE
1.5
Switch
75
75
2
100
1709 G06
1709 G09
1709 G12
5
100
125
2.5