Datasheet

LTC3727A-1
5
3727a1fa
INPUT VOLTAGE (V)
0
0
SUPPLY CURRENT (μA)
400
1000
10
20
3727 G04
200
800
600
30
BOTH
CONTROLLERS ON
SHUTDOWN
CURRENT (mA)
0
EXTV
CC
VOLTAGE DROP (mV)
60
80
100
30
50
3727 G05
40
20
0
10 20 40
120
140
160
V
EXTVCC
= 8.5V
INPUT VOLTAGE (V)
0
6.8
INTV
CC
VOLTAGE (V)
6.9
7.1
7.2
7.3
20
7.7
3727 G06
7.0
10
5
25 30
15 35
7.4
7.5
7.6
I
LOAD
= 1mA
DUTY FACTOR (%)
0
0
V
SENSE
(mV)
25
50
75
100
125
150
20 40 60 80
3727 G07
100
PERCENT OF NOMINAL OUTPUT VOLTAGE (%)
0
V
SENSE
(mV)
90
120
150
80
3727 G08
60
30
75
105
135
45
15
0
20
40
60
100
V
RUN/SS
(V)
0
50
V
SENSE
(mV)
75
100
125
150
1234
3727 G09
56
V
SENSE(CM)
= 1.6V
V
ITH
(V)
0
V
SENSE
(mV)
25
50
75
1.5
2.5
3727 G10
0
–25
–50
0.5 1.0 2.0
100
125
150
LOAD CURRENT (A)
0
NORMALIZED V
OUT
(%)
–0.2
–0.1
4
3727 G11
–0.3
–0.4
1
2
3
5
0.0
FCB = 0V
V
IN
= 15V
FIGURE 1
V
RUN/SS
(V)
0
0
V
ITH
(V)
0.5
1.0
1.5
2.0
2.5
1
234
3727 G12
56
V
OSENSE
= 0.7V
TYPICAL PERFORMANCE CHARACTERISTICS
Maximum Current Sense Threshold
vs Duty Factor
Maximum Current Sense Threshold
vs Percent of Nominal Output
Voltage (Foldback)
Maximum Current Sense Threshold
vs V
RUN/SS
(Soft-Start)
Current Sense Threshold
vs I
TH
Voltage Load Regulation V
ITH
vs V
RUN/SS
Supply Current vs Input Voltage
and Mode (Figure 13) EXTV
CC
Voltage Drop Internal 7.5V LDO Line Regulation