Datasheet

LTC3703-5
4
37035fa
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Efficiency vs Input Voltage
Efficiency vs Load Current
Load Transient Response
V
CC
Current vs V
CC
Voltage
V
CC
Current vs Temperature
V
CC
Shutdown Current vs V
CC
Voltage
V
CC
Shutdown Current
vs Temperature
Reference Voltage
vs Temperature
Normalized Frequency
vs Temperature
TEMPERATURE (°C)
–60 –40 –20 0
60
100 120 140
20 40 80
TEMPERATURE (°C)
–60 –40 –20 0
60
100 120 140
20 40 80
–60 –40 –20 0 20 40 60 80 140100 120
TEMPERATURE (°C)
NORMALIZED FREQUENCY
37035 G09
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
LOAD CURRENT (A)
0
EFFICIENCY (%)
100
95
90
85
80
1234
37035 G02
5
V
CC
VOLTAGE (V)
0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
7.5
37035 G04
2.5 5 10 12.5 15
V
CC
CURRENT (mA)
37035 G05
37035 G03
V
CC
CURRENT (µA)
37035 G07
35
30
25
20
15
10
5
0
REFERENCE VOLTAGE (V)
0.803
0.802
0.801
0.800
0.799
0.798
37035 G08
V
OUT
= 12V
f = 250kHz
PULSE SKIP ENABLED
V
IN
= 42V
V
IN
= 24V
V
OUT
50mV/DIV
AC COUPLED
I
OUT
2A/DIV
V
IN
= 50V
V
OUT
= 12V
1A TO 5A LOAD STEP
50µs/DIV
V
FB
= 0V
V
CC
RISING
COMP = 1.5V
TEMPERATURE (°C)
–60 –40 –20 0
V
CC
CURRENT (mA)
60
120 140100
20 40 80
4
3
2
1
0
V
FB
= 0V
COMP = 1.5V
INPUT VOLTAGE (V)
0
80
EFFICIENCY (%)
85
90
95
100
10 20 30 40
37035 G01
50 60
I
OUT
= 1A
V
OUT
= 5V
f = 250kHz
FORCED CONTINUOUS
I
OUT
= 5A
V
CC
VOLTAGE (V)
0
0
V
CC
CURRENT (µA)
20
40
60
80
48
12
16
37035 G06
100
120
26
10
14
V
CC
= 5V
T
A
= 25°C (unless otherwise noted).