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Specifications subject to change without notice.

K78XXM-1000

A/4 -2011

Page 3 of 4

OUTPUT RIPPLE REDUCTION

3

+Vin

GND

+Vout

1

DC/DC

Converter

C1

22F

μ

2

C2

L

To reduce output ripple, it is recommended to add a LC filter in output port.

L: Recommended parameter 10

μH ~ 47μH.

(figure 5)

CHARACTERISTICS

Efficiency

Ripple

Efficiency VS Vin(Full Load)

0

10

20

30

40

50

60

70

80

90

100

4.75 5

6 6.5 7.2 8

9

10 12 15 18 20 Vin(V)

Efficiency

(%)

K7801M-1000

K78X2M-1000

K7802M-1000

K7803M-1000

K7805M-1000

Ripple VS Vin(Full Load)

0

5

10

15

20

25

30

4.75 5

6 6.5 7.2 8

9

10 12 15 18 20

Vin(V)

Ripple(mV)

K7801M-1000

K78X2M-1000

K7802M-1000

K7803M-1000

K7805M-1000

Efficiency VS Load(Vin=Vin-nominal)

0

10

20

30

40

50

60

70

80

90

100

100 200 300 400 500 600 700 800 900 1000

Load(mA)

Efficiency

(%)

K7801M-1000

K78X2M-1000

K7802M-1000

K7803M-1000

K7805M-1000

Ripple VS Load(Vin=Vin-nominal)

0

5

10

15

20

25

30

100 200 300 400 500 600 700 800 900 1000 Load(mA)

Ripple(mV)

K7801M-1000

K78X2M-1000

K7802M-1000

K7803M-1000

K7805M-1000