LTC1929-PG LINER [Linear Technology], LTC1929-PG Datasheet - Page 5

• Manufacturer Part Number: LTC1929-PG
• Description: 2-Phase, High Efficiency,Synchronous Step-Down Switching Regulators
• Manufacturer: LINER [Linear Technology]

TYPICAL PERFOR A CE CHARACTERISTICS
1000
800
600
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
Internal 5V LDO Line Reg
Maximum Current Sense Threshold
vs V
V
V
I
V
LOAD
OUT
EXTVCC
SENSE(CM)
RUN/SS
5
5
= 5V
1
SHUTDOWN
= 1mA
= V
10
10
OUT
INPUT VOLTAGE (V)
INPUT VOLTAGE (V)
= 1.6V
2
(Soft-Start)
ON
V
15
RUN/SS
15
3
20
20
(V)
4
25
25
W
5
30
30
1929 G04
1929 G10
1929 G07
U
35
35
6
250
200
100
150
50
75
50
25
80
76
64
72
68
60
0
0
0
0
EXTV
Maximum Current Sense Threshold
vs Duty Factor
0
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
CC
20
10
COMMON MODE VOLTAGE (V)
1
Voltage Drop
DUTY FACTOR (%)
LTC1929
CURRENT (mA)
40
20
2
60
30
3
LTC1929-PG
80
40
4
1929 G05
1929 G08
1929 G11
LTC1929/LTC1929-PG
100
50
5
5.05
5.00
4.85
4.75
4.70
4.95
4.90
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
INTV
Voltage vs Temperature
Maximum Current Sense Threshold
vs Percent on 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
SWITCHOVER THRESHOLD
INTV
1
25
V
ITH
CC
50
CC
(V)
50
VOLTAGE
1.5
Switch
75
75
2
100
1929 G06
1929 G09
1929 G12
5
125
100
2.5