2
dc1821bf
DEMO MANUAL DC1821B
Figure 2. DC1821B Input Voltage Step Response. V
IN
Stepped from 3.3V to 12V I
OUT
is 500mA
Figure 3. DC1821B Step Load Response. V
IN
= 12V Load Step is from 250mA to 750mA
DESCRIPTION
dc1821a F02
V
OUT
: 500mV/DIV
V
IN
: 5V/DIV
dc1821a F03
V
OUT
: 100mV/DIV
I
OUT
: 500mA/DIV
Figure 1. DC1821B Efficiency in Auto Burst Mode Operation
DC1821B Typical Efficiency in
Auto Burst Mode Operation
V
IN
(V)
0
EFFICIENCY (%)
100
80
90
70
60
50
10
20
5
15
30
dc1821a F01
40
25
35
250mA LOAD
500mA LOAD
750mA LOAD
1A LOAD
