LTC1709-9 Linear Technology, LTC1709-9 Datasheet - Page 5

• Manufacturer Part Number: LTC1709-9
• Description: 2-Phase/ 5-Bit VID/ Current Mode/ High Efficiency/ Synchronous Step-Down Switching Regulators
• Manufacturer: Linear Technology

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
60
20
80
40
0
0
0
0
0
Supply Current vs Input Voltage
and Mode (Figure 12)
Internal 5V LDO Line Reg
Maximum Current Sense Threshold
vs V
I
V
LOAD
SENSE(CM)
RUN/SS
5
5
SHUTDOWN
1
= 1mA
ON
10
10
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 1.6V
2
(Soft-Start)
V
15
RUN/SS
15
3
20
20
(V)
4
25
25
W
5
30
30
170989 G04
170989 G10
170989 G07
U
35
35
6
250
200
100
150
50
75
50
25
80
76
68
64
60
72
0
0
0
0
EXTV
Maximum Current Sense Threshold
vs Duty Factor
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
0
CC
20
10
COMMON MODE VOLTAGE (V)
1
Voltage Drop
DUTY FACTOR (%)
CURRENT (mA)
40
20
2
60
30
3
40
80
4
170989 G05
170989 G08
170989 G11
100
50
5
LTC1709-8/LTC1709-9
5.05
5.00
4.85
4.75
4.70
4.95
4.90
4.80
–10
–20
–30
90
80
70
60
50
40
10
80
70
60
50
40
30
20
10
30
20
0
0
– 50
0
0
INTV
Voltage vs Temperature
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
Current Sense Threshold
vs I
PERCENT ON NOMINAL OUTPUT VOLTAGE (%)
– 25
TH
CC
0.5
EXTV
Voltage
and EXTV
25
0
TEMPERATURE ( C)
CC
SWITCHOVER THRESHOLD
INTV
1
25
V
ITH
CC
50
CC
(V)
50
VOLTAGE
1.5
Switch
75
75
2
100
170989 G06
170989 G09
170989 G12
5
125
100
2.5