2
dc2468af
DEMO MANUAL DC2468A
DESCRIPTION
Figure 1. LT8645S Demo Circuit DC2468A Efficiency vs
Load Current (Input from VIN Terminal)
Figure 3. LT8645S Demo Circuit DC2468A
Temperature Rising vs Input Voltage (500kHz)
Figure 2. LT8645S Demo Circuit DC2468A
Temperature Rising vs Input Voltage (2MHz)
V
OUT
= 5V
POWER LOSS
f
SW
= 2MHz
SYNC/MODE = GND
EFFICIENCY
V
IN
= 12V
V
IN
= 24V
LOAD CURRENT (A)
1
2
3
4
5
6
7
8
60
65
70
75
80
85
90
95
100
0
0.8
1.6
2.4
3.2
4.0
4.8
5.6
6.4
EFFICIENCY (%)
POWER LOSS (W)
dc2468a F01
V
OUT
= 5V
f
SW
= 500kHz
I
OUT
= 8A
I
OUT
= 6A
I
OUT
= 4A
INPUT VOLTAGE (V)
12
18
24
30
36
42
48
54
60
0
10
20
30
40
50
60
70
80
90
100
TEMPERA
TURE RISING (°C)
dc2468a F03
V
OUT
= 5V
f
SW
= 2MHz
I
OUT
= 8A
I
OUT
= 6A
I
OUT
= 4A
INPUT VOLTAGE (V)
12
18
24
30
36
42
48
54
60
0
10
20
30
40
50
60
70
80
90
100
TEMPERA
TURE RISING (°C)
dc2468a F02
