Datasheet

LTC3729
6
3729fb
TYPICAL PERFORMANCE CHARACTERISTICS
Load Regulation V
ITH
vs V
RUN/SS
SENSE Pins Total Source Current
Maximum Current Sense
Threshold vs Temperature RUN/SS Current vs Temperature
Maximum Current Sense Threshold
vs V
RUN/SS
(Soft-Start)
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
Current Sense Threshold
vs I
TH
Voltage
V
RUN/SS
(V)
0
0
V
SENSE
(mV)
20
40
60
80
1 2 3 4
3729 G10
5 6
V
SENSE(CM)
= 1.6V
COMMON MODE VOLTAGE (V)
0
V
SENSE
(mV)
72
76
80
4
3729 G11
68
64
60
1
2
3
5
V
ITH
(V)
0
V
SENSE
(mV)
30
50
70
90
2
3729 G12
10
–10
20
40
60
80
0
–20
–30
0.5
1
1.5
2.5
LOAD CURRENT (A)
0
NORMALIZED V
OUT
(%)
–0.2
–0.1
4
3729 G13
–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
2 3 4
3729 G14
5 6
V
OSENSE
= 0.7V
V
SENSE
COMMON MODE VOLTAGE (V)
0
I
SENSE
(µA)
0
3729 G15
–50
–100
2 4
50
100
6
TEMPERATURE (°C)
–50 –25
70
V
SENSE
(mV)
74
80
0
50
75
3729 G17
72
78
76
25
100
125
TEMPERATURE (°C)
–50 –25
0
RUN/SS CURRENT (µA)
0.2
0.6
0.8
1.0
75 10050
1.8
3729 G19
0.4
0 25 125
1.2
1.4
1.6