4
DEMO MANUAL DC1811B-B
Rev. A
QUICK START PROCEDURE
USB to I2C/PMBus
Dongle DC1613A
LTM4676A Demo
Board DC1811B-‐B
Input Power
Supply
USB Cable
VIN
12-‐PIN (J1)
Connector
Load0
Vout0
Vout1
Load1
Figure 4. Demo Setup with PC
LOAD CURRENT (A)
0
65
EFFICIENCY (%)
70
80
85
90
6 7 8
10
9
11 12
100
DC1811A F05
75
1 2 3 4 5
13
95
V
OUT
= 1V
V
OUT
= 1.2V
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
IN
= 5V, f
SW
= 500kHz, CCM
Figure 5. Efficiency vs Load Current at V
IN
= 5V
Figure 6. Efficiency vs Load Current at V
IN
= 12V
LOAD CURRENT (A)
0
65
60
EFFICIENCY (%)
70
80
85
90
6 7 8
10
9
11 12
DC1811A F06
75
1 2 3 4 5
13
95
V
OUT
= 1V
V
OUT
= 1.2V
V
OUT
= 1.5V
V
OUT
= 1.8V
V
OUT
= 2.5V
V
OUT
= 3.3V
V
OUT
= 5V
V
IN
= 12V
f
SW
= 500kHz
CCM
