• For stabilization of the secondary stage of switching power supplies
• Electronic equipment
sAbsolute
Maximum Ratings
Parameter
DC Input Voltage
DC Output Current
Power Dissipation
Junction Temperature
Ambient Operating Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient air)
Symbol
SI-3050N
V
IN
I
O
P
D1
P
D2
T
j
T
op
T
stg
R
th(j-c)
R
th(j-a)
25
Ratings
SI-3090N/3120N
30
1.0
*2
14(With infinite heatsink)
1.5(Without heatsink, stand-alone operation)
–40 to +125
–30 to +100
–40 to +125
7.0
66.7(Without heatsink, stand-alone operation)
SI-3150N
35
V
A
W
W
°C
°C
°C
°C/W
°C/W
Unit
(T
a
=25°C)
16
qSI-3000N
Series
sElectrical
Characteristics
Ratings
Parameter
Input Voltage
SI-3000N
Output Voltage
*1
(T
a
=25°C unless otherwise specified)
Symbol
min.
V
IN
6
*3
4.80
4.90
Conditions
V
DIF
Conditions
SI-3050N
typ.
5.00
5.00
max.
15
*2
5.20
5.10
0.5
1.0
min.
10
*3
8.64
8.82
SI-3090N
typ.
9.00
9.00
max.
20
*2
9.36
9.18
0.5
I
O
≤0.5A
1.0
I
O
≤1.0A
18
70
±1.0
V
IN
=12V, I
O
=5mA, T
j
=0 to 100°C
54
V
IN
=12V, f=100 to 120H
Z
3
V
IN
=12V, I
O
=0A
1.2
1.2
V
IN
=12V
10
10
48
180
min.
13
*3
11.52
11.76
SI-3120N
typ.
12.00
12.00
max.
25
*2
12.48
12.24
0.5
1.0
24
93
±1.5
V
IN
=15V, I
O
=5mA, T
j
=0 to 100°C
54
V
IN
=15V, f=100 to 120H
Z
3
V
IN
=15V, I
O
=0A
1.2
V
IN
=15V
10
64
240
min.
16
*3
14.40
14.70
SI-3150N
typ.
15.00
15.00
max.
27
*2
15.60
15.30
0.5
1.0
Unit
V
V
SI-3000NA
V
O
V
IN
=8V, I
O
=0.5A
V
IN
=12V, I
O
=0.5A
V
IN
=15V, I
O
=0.5A
V
IN
=18V, I
O
=0.5A
V
Dropout Voltage
Conditions
Line Regulation
Load Regulation
Temperature Coefficient
of Output Voltage
Ripple Rejection
Quiescent Circuit
Current
Overcurrent Protection
Starting
Current
*4,5
∆V
OLINE
Conditions
∆V
OLOAD
Conditions
∆V
O
/∆T
a
Conditions
R
REJ
Conditions
I
q
Conditions
I
S1
Conditions
1.2
V
IN
=8V
10
40
±0.5
V
IN
=8V, I
O
=5mA, T
j
=0 to 100°C
54
V
IN
=8V, f=100 to 120H
Z
3
V
IN
=8V, I
O
=0A
30
100
V
IN
=6 to 15V, I
O
=0.5A
V
IN
=8V, I
O
=0 to 1.0A
mV
30
120
±1.5
V
IN
=18V, I
O
=5mA, T
j
=0 to 100°C
54
V
IN
=18V, f=100 to 120H
Z
3
V
IN
=18V, I
O
=0A
A
V
IN
=18V
10
mA
dB
90
300
mV
V
IN
=16 to 27V, I
O
=0.5A
V
IN
=18V, I
O
=0 to 1.0A
mV/°C
V
IN
=10 to 20V, I
O
=0.5A
V
IN
=12V, I
O
=0 to 1.0A
V
IN
=13 to 25V, I
O
=0.5A
V
IN
=15V, I
O
=0 to 1.0A
*1: "A" may be indicated to the right of the Sanken logo.
*2: V
IN(max)
and I
O(max)
are restricted by the relation P
D(max)
=(V
IN
-V
O
)•I
O
=14(W).
*3: Refer to the dropout voltage.(Refer to Setting DC Input Voltage on page 7.)
*4: I
S
1 is specified at –5(%) drop point of output voltage V
O
on the condition that V
IN
=V
O
+3V, I
O
=0.5A.
*5: A foldback type overcurrent protection circuit is built into the IC regulator. Therefore, avoid using it for the following applications as it may cause
starting errors:
(1) Constant current load (2) Plus/minus power (3) Series power (4) V
O
adjustment by raising ground voltage
sOutline
Drawing
φ
3.2
±0.2
7.9
±0.2
4
±0.2
0.5
(unit: mm)
10
±0.2
4.2
±0.2
2.8
±0.2
16.9
±0.3
a
2
max.
b
2.6
±0.15
a. Part Number
b. Lot Number
q
GND
w
V
O
e
V
IN
(13.5)
0.95
+0.2
0.85
–0.1
±0.15
P3.4
±0.1
×2=6.8
0.45
–0.1
+0.2
Plastic Mold Package Type
Flammability: UL94V-0
Weight: Approx. 2.3g
q
w
e
17
qSI-3000N
Series
sBlock
Diagram
3
T
r1
2
MIC
Reg.
Drive
Protection
Amp.
1
sStandard
External Circuit
C
0
*1 C
1
C
2
2
SI-3000N
C
2
1
+
C
0
DC Output
V
O
V
REF
D
1
*
2
3
DC Input
V
IN
+
*
1
C
1
: Output capacitor (47 to 100µF)
: Oscillation prevention capacitor
(C
1
: Approx. 47µF, C
2
: 0.33µF)
These capacitors are required if the input line is
inductive and in the case of long wiring. Tantalum
capacitors are recommended for C
1
and C
0
, particularly
at low temperatures.
: Protection diode
This diode is required for protection against reverse
biasing of the input and output. Sanken EU2Z is
recommended.
*2 D
1
sT
a
-P
D
Characteristics
15
Infinite heatsink
With Silicon Grease
Heatsink: Aluminum
20
Power Dissipation P
D
(W)
10
0
×
5
0
×
2m
10
0
×
m
10
(2
0
×
.3
2m
°
C
m
75
/W
(5.
×
7
)
2
°
5
×
C/
2m
W
m
)
(7.
6
°
C
/W
)
20
Without heatsink
0
–30
0
25
50
75
100
Ambient Temperature T
a
(°C)
P
D
=I
O
•[V
IN
(mean)–V
O
]
18
qSI-3000N
Series
sTypical
Characteristics
(T
a
=25°C)
I
O
vs. V
DIF
Characteristics
0.6
Temperature Coefficient of Output Voltage(SI-3050N)
5.06
V
IN
=8V
I
O
=0A
V
O
=5V
Rise Characteristics(SI-3050N)
6
0.5
5.04
5
Dropout Voltage V
DIF
(V)
Output Voltage V
O
(V)
Output Voltage V
O
(V)
0.4
5.02
4
I
O
0.5A
0.75A
3
4
0.25A
0.3
5.00
3
0.2
0.1
0
0
4.98
2
4.96
4.94
–40 –20
1
0.2
0.4
0.6
0.8
1.0
0
20
40
60
80 100 120 140
0
0
1
2
1.
0A
5
=
0
A
6
Output Current I
O
(A)
Ambient Temperature T
a
(°C)
Input Voltage V
IN
(V)
Rise Characteristics(SI-3120N)
14
12
Overcurrent Protection Characteristics(SI-3050N)
6
Overcurrent Protection Characteristics(SI-3120N)
14
5
12V
12
Output Voltage V
O
(V)
Output Voltage V
O
(V)
=6
V
4
8
6
4
2
0
0
V
I
I
O
=0A
=0.5A
=1.5A
8
6
4
2
3
N
=
13
V
15
V
1.5
15
V
22V
2
1
2
4
6
8
10
12
14
16
0
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0
0
0.5
1.0
Input Voltage V
IN
(V)
Output Current I
O
(A)
Output Current I
O
(A)
Thermal Protection Characteristics(SI-3050N)
6
5
Output Voltage V
O
(V)
4
V
IN
=8V
I
O
=10mA
3
2
1
0
0
20
60
100
140
180
Case Temperature T
C
(°C)
Note on Thermal Protection:
The thermal protection circuit is intended for pro-
tection against heat during instantaneous short-
circuiting. Its operation is not guaranteed for short-
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