OUTPUT RIPPLE REDUCTION
+Vin
1
C1
DC/DC
Converter 3
2
+Vout
L
C2
22
μ
F
GND
To reduce output ripple, it is recommended to add a LC filter in output port.
L: Recommended parameter 10μH ~ 47μH.
(figure 5)
CHARACTERISTICS CURVE
Efficiency
Efficiency VS. Vin(full load)
Efficiency(%)
100
90
80
70
60
50
40
4.75
K7801-1000
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
Ripple
Ripple VS. Vin(full load)
Ripple(mV)
30
K7801-1000
25
20
15
10
5
0
4.75
Lo ad
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
9
11
15
18
22
26
30
Vin(V)
9
11
15
18
22
26
30
Vin(V)
Efficiency VS.Load(Vin=Vin-nominal)
Efficiency(%)
100
90
80
70
60
50
40
50
100 200 300 400 500 600 700 800 900 1000
Load(mA)
K7801-1000
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
Ripple vs Load(Vin=Vin-nominal)
Ripple(mV)
30
25
20
15
10
5
0
50 100 200 300 400 500 600 700 800 900 1000
Load(mA)
K7801-1000
K78X2-1000
K7802-1000
K7803-1000
K7805-1000
K78X6-1000
K7809-1000
K7812-1000
K7815-1000
The copyright and authority for the interpretation of the products are reserved by MORNSUN
Specifications subject to change without notice.
K78XX-1000(L)
B/1-2011
Page 3 of 4
CRYSTEKCRYSTAL [ Crystek Corporation ]
