LC79451KB Datasheet, PDF (33/38 Pages) ON Semiconductor – Controller and Driver

LC79451KB
10. Instructions
10-1. Recommended Specifications Example of the External Parts
The following shows a recommended specifications example of the external parts.
When charge-pump reference voltage is 2.5V, C01 is unnecessary.
VDD
VDD2
VSS
LC79451KB
VDD
C01A
C01
VDD2
C01B
VOUT0
C1
C2
C11A
C3
VSS
C11
C11B
VOUT1
C21A
C4
C21
C21B
C22A
C22
C22B
VOUT2
C5
C31A
C31
C31B
VOUT3
C6
Fig.14. Recommended specifications example of the external part
VOUT0
VOUT1
VOUT2
VOUT3
Symbol
Pin
Voltage
Capacity value
Voltage rating of capacitor
Note
C1
VDD
VDD
1.0μF
6V
-
C2
VDD2
VDD2
1.0μF
6V
-
C3
VOUT0
2.5V
1.0μF
6V
B characteristic
C4
VOUT1
5.0V
1.0μF
6V
B characteristic
C5
VOUT2
15.0V
0.1μF
25V
B characteristic
C6
VOUT3
-15.0V
0.1μF
25V
B characteristic
C01
C01A/B
1.25V
1.0μF
6V
B characteristic
C11
C11A/B
2.5V
1.0μF
6V
B characteristic
C21
C21A/B
5.0V
0.1μF
6V
B characteristic
C22
C22A/B
10.0V
0.1μF
16V
B characteristic
C31
C31A/B
15.0V
0.1μF
25V
B characteristic
Notice : These value are recommendation. “Electrical characteristic” of Cf.5 is the value using the
recommendation.
The capacity value, please decide the most suitable value after having evaluated the module.
The external parts are located near this device by wiring as short as possible, because may have an
influence of the characteristic drop by parasitic resistance in the pattern wiring.
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