qSI-3000P
Series
SI-3000P Series
3-Terminal, Dropper Type
sFeatures
•
•
•
•
TO-3P package 3-terminal regulator
Output current: 2.0A
Wide range of DC input voltage
Built-in foldback overcurrent protection circuit
sApplications
• 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)
Symbol
V
IN
I
O
P
D1
P
D2
T
j
T
op
T
stg
R
th(j-c)
Ratings
45
2.0
50(T
C
=25°C)
2.0(Without heatsink, stand-alone operation)
–30 to +125
–20 to +80
–30 to +125
2.0
Unit
V
A
W
W
°C
°C
°C
°C/W
(T
a
=25°C)
sElectrical
Characteristics
Ratings
Parameter
Input Voltage
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Overcurrent Protection
Starting Current
Limited Current at Overcurrent
Protection Operation
Symbol
min.
V
IN
V
O
Conditions
V
DIF
Conditions
∆V
OLINE
Conditions
∆V
OLOAD
Conditions
∆V
O
/∆T
a
R
REJ
Conditions
I
S1
Conditions
I
S2
Conditions
V
IN
=10V
2.4
V
IN
=10V
0.6
V
IN
=19V
2.4
V
IN
=19V
0.6
V
IN
=23V
2
40
±0.5
60
10
100
10
80
±1.5
60
f=100 to 120H
Z
2.4
V
IN
=23V
0.6
V
IN
==33V
2.4
V
IN
=33V
0.6
V
IN
=8.5 to 11.5V, I
O
=0.5A
V
IN
=10V, I
O
=0 to 2.0A
8
4.9
5.0
V
IN
=10V, I
O
=0.5A
3
SI-3052P
typ.
max.
30
5.1
min.
15
11.8
12.0
V
IN
=19V, I
O
=0.5A
3
I
O
=2.0A
30
200
10
80
±1.5
60
30
200
25
120
±2.5
60
50
300
SI-3122P
typ.
max.
35
12.2
min.
18
14.8
15.0
V
IN
=23V, I
O
=0.5A
3
SI-3152P
typ.
max.
40
15.2
min.
27
23.8
24.0
V
IN
=33V, I
O
=0.5A
3
SI-3242P
typ.
max.
40
24.2
(T
a
=25°C)
unit
V
V
V
mV
mV
mV/°C
dB
A
A
V
IN
=16 to 22V, I
O
=0.5A
V
IN
=19V, I
O
=0 to 2.0A
V
IN
=19.5 to 26.5V, I
O
=0.5A
V
IN
=23V, I
O
=0 to 2.0A
V
IN
=28 to 38V, I
O
=0.5A
V
IN
=33V, I
O
=0 to 2.0A
58
qSI-3000P
Series
sOutline
Drawing
(unit:mm)
2.0
15.6
±0.3
13.6
±0.2
9.6
±0.2
4.8
max.
2.0
max.
19.9
±0.3
φ
3.2
±0.1
Part Number
Lot Number
Plastic Mold Package Type (TO-3P)
Flammability: UL94V-0
Weight: Approx. 6g
Terminal Connections
20.0
min.
2.0
–0.1
3.5
3.0
–0.1
14.9
±0.3
+0.2
+0.2
+0.2
4.0
1.05
–0.1
5.45
±0.1
5.45
±0.1
15.8
±0.2
0.65
–0.1
1.7
+0.2
–0.3
+0.2
q
w
e
Output
Input (backside of case)
Ground
q
w
e
sBlock
Diagram
2
M
1
r
10
r
2
r
1
Tr
2
Tr
1
r
3
Tr
3
Tr
4
Tr
1
R
2
R
1
1
r
8
Tr
11
R
3
Tr
5
d
3
r
4
Tr
6
Tr
7
d
1
d
2
r
5
d
5
d
6
d
7
Tr
8
Tr
9
r
6
r
7
3
r
9
C
1
R
4
Tr
12
59
qSI-3000P
Series
sStandard
External Circuit
C
1
: Oscillation prevention capacitor (approx. 0.33µF)
Connection to terminal No.2 must be made as short as pos-
sible.
C
2
: Output capacitor (47 to 100µF)
Connection to terminal No.1 must be made as short as pos-
sible.
D
1
: Protection diode (RM1Z)
Required for protection against reverse biasing of input and
output.
Note 1: Connect a 47µF to 100µF capacitor to both sides of the
load if the wiring between the output terminal and the
load is long.
Note 2: An isolation type diode is provided from input to ground
and also from output to ground. These may be destroyed
if the device is reverse biased. In this case, use a diode
with low V
F
to protect them.
Note 3: The output voltage may not be adjusted by raising the
ground voltage (using a diode or resistor).
D
1
V
IN
2
SI-3000P
3
C
1
1
V
O
DC input
DC output
+
C
2
sT
a
-P
D
Characteristics
24
200×200×2 (2.3°C/W)
Power Dissipation P
D
(W)
20
16
12
8
4
100×100×2 (5.2°C/W)
75×75×2 (7.6°C/W)
Without Mica
With Silicon Grease
Heatsink: Aluminum
Unit: mm
Without heatsink
0
25
50
75
100
0
–20
Ambient Temperature T
a
(°C)
60
qSI-3000P
Series
sTypical
Characteristics
(T
a
=25°C)
I
O
vs. V
DIF
Characteristics
4.0
Temperature Coefficient of Output Voltage(SI-3052P)
5.07
5.06
V
IN
=10V
l
O
=0.5A
Circuit Current(SI-3052P)
20
V
O
=5V
Dropout Voltage V
DIF
(V)
Output Voltage V
O
(V)
5.05
5.04
5.03
5.02
5.01
3.0
2.5
Ground Current l
G
(mA)
–20
0
20
40
60
80
100
3.5
15
10
5
2.0
1.5
0
0.5
1.0
1.5
2.0
2.5
3.0
5.00
–40
0
0
2
4
6
8
10
12
14
16
Output Current l
O
(A)
Ambient Temperature T
a
(°C)
Input Voltage V
IN
(V)
Rise Characteristics(SI-3052P)
7
6
Rise Characteristics(SI-3122P)
14
12
Rise Characteristics(SI-3242P)
30
25
Output Voltage Vo (V)
Output Voltage V
O
(V)
5
4
3
2
1
0
0
l
O
=0A
0.5A
1A
2A
10
8
6
4
2
0
0
l
O
=0A
0.5A
1A
1.5A
2A
Output Voltage Vo (V)
20
l
O
=0A
0.5A
1A
1.5A
2A
15
10
5
1
2
3
4
5
6
7
8
9
10 11
5
10
15
20
0
0
5
10
15
20
25
30
35
40
Input Voltage V
IN
(V)
Input Voltage V
IN
(V)
Input Voltage V
IN
(V)
Overcurrent Protection Characteristics(SI-3052P)
7
6
Overcurrent Protection Characteristics(SI-3122P)
14
12
35V
Overcurrent Protection Characteristics(SI-3242P)
30
25V
25
V
30
Output Voltage V
O
(V)
V
IN
Output Voltage V
O
(V)
Output Voltage V
O
(V)
=15
5
4
3
2
1
0
0
=8
V
.5
10
8
6
4
2
0
0
V
V
I
20
33
N
=
V
19V
27
35V
10V
11.5V
V
V
IN
15
10
5
1
2
3
4
1
2
3
4
5
6
7
8
0
0
1
2
3
4
5
6
7
8
Output Current l
O
(A)
Output Current l
O
(A)
Output Current l
O
(A)
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