SI-3000B Datasheet, PDF (4/5 Pages) Sanken electric – 5-Terminal, Multi-Function, Full-Mold, Low Dropout Voltage Dropper Type

qSI-3000B Series
sStandard External Circuit
SI-3157B
D1 _*2
5
3
+ ^*1
OPEN
2
SI-3157B
4
DC Input
VIN
C1 ^C2
1
+
C0 DC Output
VO
SI-3025B
D1 _*2
+ ^*1
DC Input
VIN
C1
5
OPEN ₂
C2
3
SI-3025B
4
R1
*3 ⁺
1
C0 DC Output
R2
VO
*3
C0 : Output capacitor (47 to 100µF)
*1 C1 : Oscillation prevention capacitor
C2 (C1: Approx. 47µF, C2: 0.33µF)
These capacitors are required if the input line is inductive
and in the case of long wiring. Tantalum capacitors are rec-
ommended for C1 and C0, particularly at low temperatures.
*2 D1 : Protection diode
This diode is required for protection against reverse biasing
of the input and output. Sanken EU2Z is recommended.
*3 R1 : External resistor for setting output voltage
R2 Relationship between output voltage VO and external resis-
tors R1 and R2 is as follows.
R1
VO=VREF • 1+
(VREF=2.55V(typ.))
R2
R2 must be 2.55kΩ for stable operation.
sTa-PD Characteristics
15 _{Infinite heatsink}
With Silicon Grease
Heatsink: Aluminum
10
5
71520_×^0070×₅^×1_×^{20200m0××}_{m22mm(m7m.6(5°}^(2C.2./3_°WC^°C)/W/W) ₎
Without heatsink
0
–30
0
25
50
75
100
Ambient Temperature Ta (°C)
PD=IO•[VIN(mean)–VO]
31