58
Parameter
Input Voltage
Output V oltage
Dropout V oltage
Line Regulation
Load Regulation
Temperature Coefficient of Output Voltage
Ripple Rejection
Overcurrent Protection
Starting Current
Limited Current at Overcurrent
Protection Operation
Unit
V
A
W
W
°C
°C
°C
°C/W
Symbol
VIN
IO
PD1
PD2
Tj
Top
Tstg
Rth(j-c)
Ratings
45
2.0
50(TC=25°C)
2.0(Without heatsink, stand-alone operation)
–30 to +125
–20 to +80
–30 to +125
2.0
SI-3000P Series
3-Terminal, Dropper Type
●SI-3000P Series
■Features
• TO-3P package 3-terminal regulator
• Output current: 2.0A
• Wide range of DC input voltage
• Built-in foldback overcurrent protection circuit
■Applications
• For stabilization of the secondary stage of switching power supplies
• Electronic equipment
■Absolute Maximum Ratings (Ta=25°C)
■Electrical Characteristics
Symbol
VIN
VO
Conditions
VDIF
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
RREJ
Conditions
IS1
Conditions
IS2
Conditions
(Ta=25°C)
unit
V
V
V
mV
mV
mV/°C
dB
A
A
Ratings
SI-3052P SI-3122P SI-3152P SI-3242P
min. typ. max. min. typ. max. min. typ. max. min. typ. max.
8 3015 3518 4027 40
4.9 5.0 5.1 11.8 12.0 12.2 14.8 15.0 15.2 23.8 24.0 24.2
V
IN
=10V, I
O
=0.5A V
IN
=19V, I
O
=0.5A V
IN
=23V, I
O
=0.5A V
IN
=33V, I
O
=0.5A
3333
I
O
=2.0A
210103010302550
V
IN
=8.5 to 11.5V, I
O
=0.5A V
IN
=16 to 22V, I
O
=0.5A V
IN
=19.5 to 26.5V, I
O
=0.5A V
IN
=28 to 38V, I
O
=0.5A
40 100 80 200 80 200 120 300
V
IN
=10V, I
O
=0 to 2.0A V
IN
=19V, I
O
=0 to 2.0A V
IN
=23V, I
O
=0 to 2.0A V
IN
=33V, I
O
=0 to 2.0A
±0.5 ±1.5 ±1.5 ±2.5
60 60 60 60
f=100 to 120H
Z
2.4 2.4 2.4 2.4
V
IN
=10V V
IN
=19V V
IN
=23V V
IN
=33V
0.6 0.6 0.6
0.6
V
IN
=10V V
IN
=19V V
IN
=23V V
IN
==33V
Parameter
DC Input Voltage
DC Output Current
Power Dissipation
Junction Temperature
Ambient Operating Temperature
Storage Temperature
Thermal Resistance (junction to case)
59
●SI-3000P Series
■Outline Drawing
■Block Diagram
(unit:mm)
Plastic Mold Package Type (TO-3P)
Flammability: UL94V-0
Weight: Approx. 6g
Terminal Connections
qOutput
wInput (backside of case)
eGround
R
3
R
4
3
1
M
1
2
C
1
r
9
Tr
9
r
7
r
6
r
8
R
2
Tr
1
r
10
R
1
Tr
12
Tr
6
Tr
8
Tr
4
Tr
3
r
2
Tr
5
r
1
r
4
r
5
d
5
d
6
d
7
r
3
Tr
7
Tr
2
Tr
1
Tr
11
d
1
d
3
d
2
15.6
±0.3
4.8
max.
15.8
±0.2
5.45
±0.1
5.45
±0.1
13.6
±0.2
9.6
±0.2
3.2
±0.1
20.0
min.
2.04.03.5
14.9
±0.3
19.9
±0.3
1.05
3.0
0.65
1.7
2.0
2.0
max.
+0.2
–0.1
+0.2
–0.1
+0.2
–0.3
+0.2
–0.1
+0.2
–0.1
qwe
φ
Part Number
Lot Number
60
■Ta-PD Characteristics
■Standard External Circuit
C1: Oscillation prevention capacitor (approx. 0.33µF)
Connection to terminal No .2 must be made as short as pos-
sible.
C2: Output capacitor (47 to 100µF)
Connection to terminal No .1 must be made as short as pos-
sible.
D1: Protection diode (RM1Z)
Required for protection against re v erse 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 pro vided from input to ground
and also from output to ground. These may be destroy ed
if the de vice is rev erse biased. In this case, use a diode
with low VF to protect them.
Note 3: The output voltage may not be adjusted by raising the
ground voltage (using a diode or resistor).
●SI-3000P Series
V
IN
V
O
D
1
C
2
C
1
21
3
SI-3000P
+
DC input DC output
24
20
16
12
8
4
0
–20 0 25 50 75 100
Ambient Temperature T
a
(°C)
Power Dissipation P
D
(W)
75×75×2 (7.6°C/W)
100×100×2 (5.2°C/W)
200×200×2 (2.3°C/W)
Without heatsink
Without Mica
With Silicon Grease
Heatsink: Aluminum
Unit: mm
61
■Typical Characteristics
IO vs. VDIF Characteristics
Temperature Coefficient of Output Voltage(SI-3052P)
Circuit Current(SI-3052P)
Rise Characteristics(SI-3052P) Rise Characteristics(SI-3122P) Rise Characteristics(SI-3242P)
Overcurrent Protection Characteristics(SI-3052P) Overcurrent Protection Characteristics(SI-3122P) Overcurrent Protection Characteristics(SI-3242P)
–40 –20 0 20 40 60 80 100
5.07
5.06
5.05
5.04
5.03
5.02
5.01
5.00
Ambient Temperature T
a
(°C)
Output Voltage V
O
(V)
V
IN
=10V
l
O
=0.5A
0246810121416
20
15
10
5
0
Input Voltage V
IN
(V)
Ground Current l
G
(mA)
V
O
=5V
01234
7
6
5
4
3
2
1
0
Output Current l
O
(A)
Output Voltage V
O
(V)
V
IN
=8.5V
11.5V
10V
012345678
14
12
10
8
6
4
2
0
Output Current l
O
(A)
Output Voltage V
O
(V)
35V
V
IN
=15V
19V
30V
012345678
30
25
20
15
10
5
0
Output Current l
O
(A)
Output Voltage V
O
(V)
25V
V
IN
=27V
35V
33V
●SI-3000P Series
(Ta=25°C)
0 0.5 1.0 1.5 2.0 2.5 3.0
4.0
3.5
3.0
2.5
2.0
1.5
Output Current lO
(
A
)
Dropout Voltage VDIF (V)
01234567891011
7
6
5
4
3
2
1
0
Input Voltage V
IN
(V)
Output Voltage V
O
(V)
l
O
=0A
0.5A
1A
2A
0 5 10 15 20
14
12
10
8
6
4
2
0
Input Voltage V
IN
(V)
Output Voltage Vo (V)
l
O
=0A
0.5A
1A
1.5A
2A
0 5 10 15 20 25 30 35 40
30
25
20
15
10
5
0
Input Voltage VIN (V)
Output Voltage Vo (V)
lO=0A
0.5A
1A
1.5A
2A
