SI-8000S Series
■External Dimensions (TO220F-5)
(Unit : mm)
4.2±0.2
2.8±0.2
10.0±0.2
φ
Pin Assignment
2.6±0.1
q
w
e
r
t
VIN
SWOUT
GND
VOS
0.95±0.15
+0.2
0.85
–0.1
+0.2
0.45
–0.1
S.S
P1.7±0.7×4=6.8±0.7
3.9±0.7
(4.3)
8.2±0.7
Plastic Mold Package Type
Flammability: UL94V-0
Product Mass: Approx. 2.3g
Forming No. 1101
1
2 3 4 5
■Block Diagram
V
IN
1
2 SWOUT
OCP
Reg.
OSC
Reset
Drive
TSD
Comp.
V
OS
4
Amp.
VREF
S.S.
GND
3
5
■Typical Connection Diagram
L
1
VIN
VO
2
1
VIN
SWOUT
C1,2 : 1000µF
SI-8000S
D1
+
+
L1 : 150µH
C1
C2
VOS
D1 : RK46(Sanken)
4
S.S GND
3
5
GND
GND
■Ta-PD Characteristics
100
VO
20
PD=VO•IO
–1 –VF•IO 1–
ηχ
VIN
Infinite heatsink
With Silicone Grease
Heatsink: Aluminum
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.
15
200×200×2mm
(2.3°C/W)
100×100×2mm
(5.2°C/W)
10
VO : Output voltage
VIN : Input voltage
IO : Output current
ηx : Efficiency (%)
VF : Diode D1 forward voltage
0.5V(RK46)
75×75×2mm
(7.6°C/W)
5
0
Without heatsink
–25
0
25
50
75
100
125
Operating Ambient Temperature Ta (°C)
Thermal design for D1 must be considered separately.
ICs
41
ETC [ ETC ]
