LTC3703 Linear Technology, LTC3703 Datasheet - Page 4

• Manufacturer Part Number: LTC3703
• Description: 100V Synchronous Switching Regulator Controller
• Manufacturer: Linear Technology

LTC3703
TYPICAL PERFOR A CE CHARACTERISTICS
4
100
3.5
3.0
2.5
2.0
1.5
1.0
0.5
95
90
85
80
75
70
70
65
60
55
50
45
40
35
30
0
–60 –40 –20
6
Efficiency vs Input Voltage
0
V
V
Temperature
V
f = 300kHz
PULSE SKIP DISABLED
CC
CC
OUT
10
Current vs V
Shut-Down Current vs
= 12V
8
20
TEMPERATURE ( C)
INPUT VOLTAGE (V)
V
CC
30
0
10
VOLTAGE (V)
COMP = 1.5V
40
20
CC
I
OUT
Voltage
12
= 5A
50
40
I
V
OUT
FB
60
60
W
= 0V
= 0.5A
14
70
80
3703 G04
3703 G07
3703 G01
U
100
80
16
0.803
0.802
0.801
0.800
0.799
0.798
100
95
90
85
80
75
70
4
3
2
1
0
–60 –40 –20
–60 –40 –20
0 0.5
Efficiency vs Load Current
V
Reference Voltage vs
Temperature
CC
Current vs Temperature
1.0
1.5
LOAD CURRENT (A)
TEMPERATURE ( C)
TEMPERATURE ( C)
V
2.0
IN
0
0
= 15V
2.5
V
f = 250kHz
PULSE SKIP ENABLED
20
20
COMP = 1.5V
OUT
V
3.0
IN
= 5V
40
40
= 45V
3.5
V
FB
60
60
V
= 0V
4.0
IN
= 75V
T
80
80
3703 G02
3703 G08
4.5
3703 G05
A
= 25 C (unless otherwise noted).
100
5.0
100
50mV/DIV
2A/DIV
V
I
1.20
1.15
1.10
1.05
1.00
0.95
0.90
0.85
0.80
100
OUT
OUT
90
80
70
60
50
40
30
20
10
0
–60 –40 –20
6
V
V
1A TO 5A LOAD STEP
Load Transient Response
V
Voltage
Normalized Frequency vs
Temperature
IN
OUT
CC
= 50V
= 12V
Shut-Down Current vs V
8
TEMPERATURE ( C)
V
CC
0
10
VOLTAGE (V)
50 s/DIV
20
12
40
60
14
CC
80
3703 G03
3703 G06
3703 G09
3703f
100
16