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SI-8000S_11 Datasheet, PDF (2/2 Pages) Sanken electric – Full-Mold, Separate Excitation Step-down Switching Mode | |||
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SI-8000S Series
â External Dimensions (TO220F-5)
10.0±0.2
4.2±0.2
2.8±0.2
2.6±0.1
0.95±0.15
0.85
+0.2
â0.1
P1.7±0.7Ã4=6.8±0.7
0.45
+0.2
â0.1
3.9±0.7
(4.3)
8.2±0.7
1 23 45
Forming No. 1101
â Block Diagram
VIN 1
Reg.
OSC
OCP
Reset
Drive
2 SWOUT
Comp.
Amp.
TSD
4 VOS
VREF
5 S.S.
3 GND
â Typical Connection Diagram
VIN
1
VIN
L1
2
SWOUT
+
C1
GND
SI-8000S
D1
S.S GND
53
VOS
4
VO
+
C2
GND
â Ta-PD Characteristics
20
Infinite heatsink
15 200Ã200Ã2mm
(2.3°C/W)
100Ã100Ã2mm
10 (5.2°C/W)
With Silicone Grease
Heatsink: Aluminum
75Ã75Ã2mm
(7.6°C/W)
5
Without heatsink
0
â25 0
25 50 75 100 125
Operating Ambient Temperature Ta (°C)
Pin Assignment
q VIN
w SWOUT
e GND
r VOS
t S.S
Plastic Mold Package Type
Flammability: UL94V-0
Product Mass: Approx. 2.3g
(Unit : mm)
C1,2 : 1000µF
L1 : 150µH
D1 : RK46(Sanken)
PD=VOâ¢IO
100
VO
â1 âVFâ¢IO 1â
ηÏ
VIN
The efficiency depends on the input voltage and the output current.
Therefore, obtain the value from the efficiency graph and substi-
tute the percentage in the formula above.
VO : Output voltage
VIN : Input voltage
IO : Output current
ηx : Efficiency (%)
VF : Diode D1 forward voltage
0.5V(RK46)
Thermal design for D1 must be considered separately.
ICs 41
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