IRDC3863
11
Fig. 18: Efficiency vs. Load Current
TYPICAL OPERATING DATA
VIN = 12V, VCC = 5V, VOUT = 1.05V, Fs = 300kHz, IOUT = 0 ~ 6A, T
A
= 25
o
C, no airflow,
unless otherwise specified
Fig. 19: Switching Frequency vs. Load Current
Fig. 20: Load Regulation
Fig. 21: Line Regulation at 6A Load
1.040
1.045
1.050
1.055
1.060
1.065
1.070
1.075
1.080
1.085
1.090
0
1
2
3
4
5
6
Load Current (A)
O
ut
put
V
o
lt
age
(
V
)
1.040
1.045
1.050
1.055
1.060
1.065
1.070
1.075
1.080
1.085
1.090
7
8
9
10
11
12
13
14
15
16
Input Voltage (V)
Outpu
t V
o
lt
age
(V
)
0
50
100
150
200
250
300
350
0
1
2
3
4
5
6
Load Current (A)
S
w
it
c
hing Fr
eque
ncy
(k
Hz
)
45%
50%
55%
60%
65%
70%
75%
80%
85%
90%
0.01
0.1
1
10
Load Current (A)
Ef
ficie
n
cy
