1-1-1 Linear Regulator ICs
SI-3000F Series
5-Terminal, Full-Mold, Low Dropout Voltage Linear Regulator ICs
sFeatures
• Compact full-mold package (equivalent to
TO220)
• Output current: 1.0A
• Low dropout voltage: V
DIF
1V (at I
O
=1.0A)
• Variable output voltage (rise only)
Available for remote sensing (excluding SI-
3025F)
• 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, input-overvolt-
age and thermal protection circuits
• Variable output voltage type (SI-3025F) also
available
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)
** SI-3240F: 18
*** SI-3240F: 5.5
Symbol
V
IN
V
C
I
O
P
D1
P
D2
T
j
T
op
T
stg
Ratings
SI-3050F
25
SI-3090F/3120F
30
SI-3057F
35
V
IN
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-3240F
45
SI-3025F
30
(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 (except SI-3025F)
Ratings
Parameter
Input Voltage
Symbol
min.
V
IN
6
*3
4.80
V
O
Conditions
V
DIF
Dropout Voltage
Conditions
1.0
Conditions
Line Regulation
Load Regulation
Temperature Coefficient of
Output Voltage
Ripple Rejection
Quiescent Circuit Current
Overcurrent Protection
Starting Current
*4,7
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
–0.3
–0.3
V
C
=0.4V
2.0
0.8
20
1.2
V
IN
=8V
2.0
0.8
20
V
C
=2.7V
–0.3
–0.3
10
V
IN
=6V to 15V, I
O
=0.5A
40
V
IN
=8V, I
O
=0 to 1.0A
±0.5
V
IN
=8V, I
O
=5mA, Tj=0 to 100°C
54
V
IN
=8V, f=100 to 120H
Z
3
V
IN
=8V, I
O
=0A
1.2
V
IN
=12V
2.0
0.8
20
10
100
30
18
70
±1.0
V
IN
=12V, I
O
=5mA, Tj=0 to 100°C
54
V
IN
=12V, f=100 to 120H
Z
3
V
IN
=12V, I
O
=0A
1.2
V
IN
=15V
2.0
0.8
20
10
48
180
V
IN
=10V to 20V, I
O
=0.5A
V
IN
=12V, I
O
=0 to 1.0A
1.0
I
O
≤1.0A
24
93
±1.5
V
IN
=15V, I
O
=5mA, Tj=0 to 100°C
54
V
IN
=15V, f=100 to 120H
Z
3
V
IN
=15V, I
O
=0A
1.2
V
IN
=19V
10
64
240
30
120
±1.5
V
IN
=19V, I
O
=5mA, Tj=0 to 100°C
54
V
IN
=19V, f=100 to 120H
Z
3
V
IN
=19V, I
O
=0A
10
90
300
4.90
5.00
5.00
SI-3050F
typ.
max.
15
*2
5.20
5.10
0.5
min.
10
*3
8.64
8.82
9.00
9.00
SI-3090F
typ.
max.
20
*2
9.36
9.18
V
IN
=15V, I
O
=0.5A
,
0.5
I
O
≤0.5A
1.0
1.0
0.5
V
IN
=19V, I
O
=0.5A
0.5
min.
13
*3
11.52
12.00
SI-3120F
typ.
max.
25
*2
12.48
min.
16.7
*3
14.92
15.70
SI-3157F
typ.
max.
27
*2
16.48
(T
a
=25°C unless otherwise specified)
SI-3240F
min.
25
*3
23.04
24.00
typ.
max.
40
*2
24.96
V
V
IN
=27V, I
O
=0.5A
0.5
1.0
48
120
±2.5
V
IN
=27V, I
O
=5mA, Tj=0 to 100°C
54
V
IN
=27V, f=100 to 120H
Z
5
V
IN
=27V
1.2
V
IN
=27V
2.0
0.8
20
–0.3
O
=0A
Unit
V
SI-3000F
Output Voltage
SI-3000FA
*
1
V
IN
=8V, I
O
=0.5A
V
IN
=12V, I
O
=0.5A
V
128
300
V
IN
=13V to 25V, I
O
=0.5A
V
IN
=15V, I
O
=0 to 1.0A
V
IN
=17V to 27V, I
O
=0.5A
V
IN
=19V, I
O
=0 to 1.0A
V
IN
=25V to 38V, I
O
=0.5A
V
IN
=27V, I
O
=0 to 1.0A
mV
mV
mV/°C
dB
mA
A
V
10
µ
A
mA
*1:
*2:
*3:
*4:
*5:
*6:
*7:
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
=14W(SI-3240F: 18W).
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
=0.5A.
Output is ON even when output control terminal VC is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.
When setting output voltage to 5V or lower, input voltage needs to be set to 6V or higher to operate stably.
These products 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
28
ICs
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