16
Parameter
DC Input Voltage
DC Output Current
Po wer Dissipation
Junction Temperature
Ambient Operating Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient air)
Unit
V
A
W
W
°C
°C
°C
°C/W
°C/W
Symbol
VIN
IO
PD1
PD2
Tj
Top
Tstg
Rth(j-c)
Rth(j-a)
■Features
• Compact full-mold package (equivalent to TO220)
• Output current: 1.0A
• Low dropout voltage: VDIF≤1V (at IO=1.0A)
• Built-in foldback overcurrent, overvoltage, thermal protection circuits
■Applications
• For stabilization of the secondary stage of switching power supplies
• Electronic equipment
■Absolute Maximum Ratings (Ta=25°C)
SI-3000N Series
3-Terminal, Full-Mold, Low Dropout Voltage Dropper Type
●SI-3000N Series
Ratings
SI-3050N SI-3090N/3120N SI-3150N
25 30 35
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)
17
Parameter
Input Voltage
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Temperature Coefficient
of Output Voltage
Ripple Rejection
Quiescent Circuit
Current
Overcurrent Protection
Starting Current*4,5
Symbol
VIN
VO
Conditions
VDIF
Conditions
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
Conditions
RREJ
Conditions
Iq
Conditions
IS1
Conditions
■Electrical Characteristics
Unit
V
V
V
mV
mV
mV/°C
dB
mA
A
SI-3000N
*1
SI-3000NA
*1: "A" may be indicated to the right of the Sanken logo.
*2: VIN(max) and IO(max) are restricted by the relation PD(max)=(VIN-VO)•IO=14(W).
*3: Refer to the dropout voltage.(Refer to Setting DC Input Voltage on page 7.)
*4: IS1 is specified at –5(%) drop point of output voltage VO on the condition that VIN=VO+3V, IO=0.5A.
*5: A foldbac k type o v ercurrent protection circuit is b uilt into the IC regulator. Therefore, a v oid using it for the following applications as it may cause
starting errors:
(1) Constant current load (2) Plus/minus power (3) Series power (4) VO adjustment by raising ground voltage
■Outline Drawing
a. Part Number
b. Lot Number
qGND
wVO
eVIN
0.95
±0.15
0.85
+0.2
10
±0.2
4.2
±0.2
2.8
±0.2
2.6
±0.15
qwe
3.2
±0.2
2
max.
0.5
16.9
±0.3
7.9
±0.2
4
±0.2
(13.5)
0.45
+0.2
–0.1
P3.4
±0.1
×2=6.8
–0.1
φ
a
b
Plastic Mold P ackage Type
Flammability: UL94V-0
Weight: Approx. 2.3g
●SI-3000N Series
(unit: mm)
(Ta=25°C unless otherwise specified)
Ratings
SI-3050N SI-3090N SI-3120N SI-3150N
min. typ. max. min. typ. max. min. typ. max. min. typ. max.
6
*3
15
*2
10
*3
20
*2
13
*3
25
*2
16
*3
27
*2
4.80 5.00 5.20 8.64 9.00 9.36 11.52 12.00 12.48 14.40 15.00 15.60
4.90 5.00 5.10 8.82 9.00 9.18 11.76 12.00 12.24 14.70 15.00 15.30
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
0.5 0.5 0.5 0.5
I
O
≤0.5A
1.0 1.0 1.0 1.0
I
O
≤1.0A
10 30 18 48 24 64 30 90
V
IN
=6 to 15V, I
O
=0.5A V
IN
=10 to 20V, I
O
=0.5A V
IN
=13 to 25V, I
O
=0.5A V
IN
=16 to 27V, I
O
=0.5A
40 100 70 180 93 240 120 300
V
IN
=8V, I
O
=0 to 1.0A V
IN
=12V, I
O
=0 to 1.0A V
IN
=15V, I
O
=0 to 1.0A V
IN
=18V, I
O
=0 to 1.0A
±0.5 ±1.0 ±1.5 ±1.5
V
IN
=8V, I
O
=5mA, T
j
=0 to 100°CV
IN
=12V, I
O
=5mA, T
j
=0 to 100°CV
IN
=15V, I
O
=5mA, T
j
=0 to 100°CV
IN
=18V, I
O
=5mA, T
j
=0 to 100°C
54 54 54 54
V
IN
=8V, f=100 to 120H
Z
V
IN
=12V, f=100 to 120H
Z
V
IN
=15V, f=100 to 120H
Z
V
IN
=18V, f=100 to 120H
Z
310310310310
V
IN
=8V, I
O
=0A V
IN
=12V, I
O
=0A V
IN
=15V, I
O
=0A V
IN
=18V, I
O
=0A
1.2 1.2 1.2 1.2
V
IN
=8V V
IN
=12V V
IN
=15V V
IN
=18V
18
■Block Diagram
■Standard External Circuit
3
Reg.
Protection
Amp.
V
REF
Drive
MIC
1
2
T
r1
D
1
C
0
C
2
C
1
DC Input
V
IN
DC Output
V
O
32
1
SI-3000N
*
1
*
2
++
■Ta-PD Characteristics
PD=IO•[VIN(mean)–VO]
C0: Output capacitor (47 to 100µF)
*1 C1: Oscillation prevention capacitor
C2(C1: Approx. 47µF, C2: 0.33µF)
These capacitors are required if the input line is
inductive and in the case of long wiring. Tantalum
capacitors are recommended for C1 and C0, particularly
at low temperatures.
*2 D1: Protection diode
This diode is required for protection against reverse
biasing of the input and output. Sanken EU2Z is
recommended.
●SI-3000N Series
15
10
5
0
–30
02550
Ambient Temperature Ta (°C)
Power Dissipation PD (W)
75 100
200×200×2mm (2.3°C/W)
100×100×2mm (5.2°C/W)
75×75×2mm (7.6°C/W)
Infinite heatsink
Without heatsink
With Silicon Grease
Heatsink: Aluminum
19
■Typical Characteristics
IO vs. VDIF Characteristics
Temperature Coefficient of Output Voltage(SI-3050N)
Rise Characteristics(SI-3050N)
Rise Characteristics(SI-3120N)
Overcurrent Protection Characteristics(SI-3050N) Overcurrent Protection Characteristics(SI-3120N)
Thermal Protection Characteristics(SI-3050N)
Output Current IO (A)
Dropout Voltage VDIF (V)
0.6
0.5
0.4
0.3
0.2
0.1
00 0.2 0.4 0.6 0.8 1.0 Ambient Temperature Ta (°C)
Output Voltage VO (V)
5.06
5.04
5.02
5.00
4.98
4.96
4.94
–40 –20 0 20 40 60 80 100 120 140
VIN=8V
IO =0A
VO =5V
Output Voltage V
O
(V)
0.25A
01234
Input Voltage V
IN
(V)
56
I
O
=
0A
6
5
4
3
2
1
0
0.5A
0.75A
1.0A
Case Temperature T
C
(°C)
Output Voltage V
O
(V)
6
5
4
3
2
1
00 20 60 100 140 180
V
IN
=8V
I
O
=10mA
Output Current I
O
(A)
6
5
4
3
2
1
000.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
V
IN
=6V
8V
10V
12V
15V
Output Voltage V
O
(V)
Output Current IO (A)
Output Voltage VO (V)
14
12
10
8
6
4
2
00.50 1.0 1.5 2.0
V
IN
=13V
15V
22V
18V
Note on Thermal Protection:
The thermal protection cir cuit is intended for pr o-
tection against heat during instantaneous short-
circuiting. Its operation is not guaranteed for short-
circuiting over extended periods of time.
(Ta=25°C)
●SI-3000N Series
Input Voltage V
IN
(V)
Output Voltage V
O
(V)
14
12
10
8
6
4
2
00246810121416
I
O
=0A
=0.5A
=1.5A
