qSI-3000KS Series
sBlock Diagram
qSI-3012KS
VIN 2
VC 1
-
+
REF
qSI-3018KS, SI-3025KS, SI-3033KS
TSD
3 VOUT
VIN 2
4 ADJ
8
7
6
5 GND
VC 1
-
+
REF
TSD
3 VOUT
4
Sense
8
7
6
5 GND
sStandard Circuit Connection Diagram
qSI-3012KS
+
CIN
VIN
VO
2
3
R1
VC GND ADJ
1 5 to 8 4
CO
Load
R2
qSI-3018KS, SI-3025KS, SI-3033KS
VIN
VO
2
3
CIN
VC
1
sense
GND 4
5 to 8
CO
Load
R2
R1, R2: Output voltage setting resistors
The output voltage can be set by connecting R1 and R2 as shown above.
The recommended value of R2 is 24 kΩ.
R1=(VO–VADJ)÷(VADJ/R2)
CIN : Input capacitor (22 µF or larger)
This capacitor is necessary if an inductance is included in the input line or if the wiring length is long.
CO : Output capacitor (22 µF or larger)
The SI-3000KS series designed for use with very low-ESR ceramics output capacitor.
When using the electrolytic capacitor, the SI-3000KS series may oscillate at a low temperature.