Datasheet

LTC3735
5
3735fa
TYPICAL PERFORMANCE CHARACTERISTICS
Supply Current vs PV
CC
Voltage
and Mode
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)
Maximum Current Sense Threshold
vs Sense Common Mode Voltage
Current Sense Threshold
vs I
TH
Voltage
Active Mode Efficiency
(Figure 14)
Deeper Sleep Mode Efficiency
(Figure 14)
Efficiency vs Input Voltage
(Figure 14)
LOAD CURRENT (A)
0
EFFICIENCY (%)
100
90
80
70
60
5 10 15 20
3735 G01
25 30
V
IN
= 7.5V
V
IN
= 20V
V
ID
= 1.468V
PSI = 0
LOAD CURRENT (A)
0.01
EFFICIENCY (%)
90
80
70
60
0.1 1
3735 G02
10
V
IN
= 7.5V
V
IN
= 20V
PSI = 0
INPUT VOLTAGE (V)
5
EFFICIENCY (%)
70
80
3735 G03
60
50
10
15
20
100
90
I
OUT
= 20A
V
OUT
= 1.6V
PV
CC
VOLTAGE (V)
4
0
SUPPLY CURRENT (µA)
1000
2500
6
3735 G04
500
2000
1500
5
7
ON
SHUTDOWN
DUTY FACTOR (%)
0
0
V
SENSE
(mV)
25
50
75
20 40 60 80
3735 G05
100
PERCENT OF NOMINAL OUTPUT VOLTAGE (%)
0
V
SENSE
(mV)
40
50
60
100
3735 G06
30
20
0
25
50
75
10
80
70
V
RUN/SS
(V)
0
0
V
SENSE
(mV)
20
40
60
80
10
30
50
70
1 2 3 4
3735 G07
5
V
SENSE(CM)
= 1.25V
COMMON MODE VOLTAGE (V)
0
V
SENSE
(mV)
72
76
4
3735 G08
68
64
60
1
2
3
5
V
ITH
(V)
0
V
SENSE
(mV)
30
50
70
90
2
3735 G09
10
–10
20
40
60
80
0
–20
–30
0.5
1
1.5
2.5