1-1-1 Linear Regulator ICs
SI-3000C Series
5-Terminal, Full-Mold, Low Dropout Voltage Linear Regulator ICs
sFeatures
• Compact full-mold package (equivalent to
TO220)
• Output current: 1.5A
• Low dropout voltage: V
DIF
≤
1V (at I
O
=1.5A)
• Variable output voltage (rise only)
Available for remote sensing
• Output ON/OFF control terminal is compatible
with LS-TTL.
(It can be driven directly by LS-TTL or
standard CMOS logic.)
• Built-in foldback overcurrent (SI-3033C:
Drooping type overcurrent), input-overvoltage
and thermal protection circuits
sAbsolute
Maximum Ratings
Parameter
DC Input Voltage
Output Control Terminal Voltage
DC Output Current
Power Dissipation
Junction Temperature
Operating Ambient Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient air)
Symbol
V
IN
V
C
I
O
P
D1
P
D2
T
j
T
op
T
stg
Ratings
SI-3033C
20
SI-3050C/3090C SI-3120C/3150C
35
V
IN
1.5
*2
18(With infinite heatsink)
1.5(Without heatsink, stand-alone operation)
–40 to +125
–30 to +100
–40 to +125
5.5
66.7(Without heatsink, stand-alone operation)
35
SI-3240C
45
(T
a
=25°C)
Unit
V
V
A
W
W
°C
°C
°C
°C/W
°C/W
θ
j-c
θ
j-a
sApplications
• For stabilization of the secondary-side output
voltage of switching power supplies
• Electronic equipment
sElectrical
Characteristics
Ratings
Parameter
Input Voltage
Output Voltage
Symbol
min.
V
IN
*3
(T
a
=25°C unless otherwise specified)
SI-3033C
typ.
3.300
3.300
V
IN
=5V, I
O
=1.0A
0.5
max.
15
*2
3.432
3.366
min.
6
*3
4.80
4.90
SI-3050C
typ.
5.00
5.00
V
IN
=8V, I
O
=1.0A
0.5
I
O
≤1.0A
1.0
1.0
I
O
≤1.5A
10
V
IN
=6 to 15V, I
O
=1.0A
100
40
V
IN
=8V, I
O
=0 to 1.5A
±0.5
V
IN
=8V, I
O
=5mA, T
j
=0 to 100°C
54
V
IN
=8V, f=100 to 120H
Z
10
1.6
5
V
IN
=8V, I
O
=0A
1.6
V
IN
=8V
2.0
0.8
20
V
C
=2.7V
–0.3
V
C
=0.4V
–0.3
0.8
20
2.0
10
100
30
max.
30
*2
5.20
5.10
min.
10
*3
8.64
8.82
SI-3090C
typ.
9.00
9.00
V
IN
=12V, I
O
=1.0A
0.5
1.0
18
V
IN
=10 to 20V, I
O
=1.0A
70
V
IN
=12V, I
O
=0 to 1.5A
±1.0
V
IN
=12V, I
O
=5mA, T
j
=0 to 100°C
54
V
IN
=12V, f=100 to 120H
Z
5
V
IN
=12V, I
O
=0A
V
IN
=12V
0.8
20
–0.3
10
180
48
max.
30
*2
9.36
9.18
Unit
V
V
SI-3000C
SI-3000CA
*1
3.168
V
O
Conditions
V
DIF
Conditions
Conditions
3.234
Dropout Voltage
V
Line Regulation
Load Regulation
Temperature Coefficient
of Output Voltage
Ripple Rejection
Quiescent Circuit Current
Overcurrent Protection
Starting Current
*4,6
Control Voltage (Output ON)
Control Voltage (Output OFF)
V
C
Control Current
Terminal
*5
(Output ON)
Control Current
(Output OFF)
∆V
OLINE
Conditions
∆V
OLOAD
Conditions
∆V
O
/∆T
a
Conditions
R
REJ
Conditions
I
q
Conditions
I
S1
Conditions
V
C.
IH
V
C.
IL
I
C.
IH
Conditions
I
C.
IL
Conditions
2.0
1.6
10
V
IN
=4.5 to 12V, I
O
=1.0A
40
V
IN
=5V, I
O
=0 to 1.5A
±0.5
30
mV
mV
mV/°C
dB
mA
A
V
V
IN
=5V, I
O
=5mA, T
j
=0 to 100°C
54
V
IN
=5V, f=100 to 120H
Z
3
V
IN
=5V, I
O
=0A
V
IN
=5V
µ
A
mA
*1:
*2:
*3:
*4:
*5:
*6:
In some cases, "A" may be printed on the right of the marking.
V
IN(max)
and I
O(max)
are restricted by the relation P
D(max)
=(V
IN
-V
O
)•I
O
=18(W).
Refer to the Dropout Voltage parameter. (Refer to Setting DC Input Voltage on page 7.)
I
S
1 is specified at the 5% drop point of output voltage V
O
on the condition that V
IN
=V
O
+3V, I
O
=1A.
Output is ON even when output control terminal V
C
is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.
These products (except for SI-3033C) cannot be used in the following applications because the built-in foldback-type overcurrent protection may cause errors during start-up stage.
(1) Constant current load (2) Positive and negative power supply (3) Series-connected power supply (4) V
O
adjustment by raising ground voltage
34
ICs