ltc1629-6 Linear Technology Corporation, ltc1629-6 Datasheet - Page 5

• Manufacturer Part Number: ltc1629-6
• Description: Polyphase, 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
RUN/SS
5
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
EXTV
(V)
4
CC
25
25
PIN OPEN
W
5
30
30
1629 G04
1629 G07
1629 G10
U
35
35
6
250
200
150
100
50
75
50
25
0
80
76
68
64
60
72
0
0
EXTV
Maximum Current Sense Threshold
vs Duty Factor
0
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
0
CC
10
20
COMMON MODE VOLTAGE (V)
1
Voltage Drop
DUTY FACTOR (%)
CURRENT (mA)
20
40
2
30
60
3
40
80
4
1629 G05
1629 G08
1629 G11
50
100
5
4.75
4.70
5.05
5.00
4.95
4.90
4.85
4.80
–10
–20
–30
90
80
70
60
50
40
80
70
60
50
40
30
20
10
30
20
10
0
0
– 50
0
0
INTV
Voltage vs Temperature
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
PERCENT ON NOMINAL OUTPUT VOLTAGE (%)
Current Sense Threshold
vs I
– 25
TH
CC
0.5
EXTV
Voltage
and EXTV
25
0
TEMPERATURE ( C)
CC
LTC1629-6
SWITCHOVER THRESHOLD
INTV
1
25
V
ITH
50
CC
CC
(V)
50
VOLTAGE
1.5
Switch
75
75
2
100
1629 G06
1629 G09
1629 G12
16296f
5
125
100
2.5