Dropper Type Regulator ICs
[With Output ON/OFF Control]
SI-3001S
a
b
2.6
±
0.1
(2.0)
(Ta = 25ºC)
0.95
±
0.15
(4.6)
0.85
–
0.1
+
0.2
Parameter
DC Input Voltage
Output Control Terminal Voltage
Output Current
Power Dissipation
Symbol
V
IN
V
C
I
O
P
D1
P
D2
Ratings
35
V
IN
1.0
*
18
1.5
– 40 to +125
– 40 to +100
– 40 to +125
5.5
1
Unit
V
V
A
W
W
ºC
ºC
ºC
ºC/W
Conditions
0.45
P1.7
±
0.7
• 4=6.8
±
0.7
+
0.2
–
0.1
3.9
±
0.7
(4.3)
8.2
±
0.7
With infinite heatsink
Stand-alone without heatsink
1
2
3
4
5
Junction Temperature
Operating Temperature
Storage Temperature
Junction to Case Thermal
Resistance
Junction to Ambient-Air Thermal
Resistance
Tj
T
OP
Tstg
j
-c
1. GND
2. V
C
(on/off)
3. Vo
4. Vosense
5. V
IN
a: Part No.
b: Lot No.
(Forming No. 1101)
j
-a
66.7
ºC/W
Stand-alone without heatsink
Equivalent Circuit Diagram
5
V
IN
R
1
MIC
Tr
1
(8.0)
5.0
±
0.6
Absolute Maximum Ratings
(17.9)
Features
●
Output current of 1.0A
●
5-terminal type <output on/off control, variable output voltage (rise only)>
●
Voltage accuracy of
±2%
●
Low dropout voltage 1V at I
O
1.0A, 0.5V at I
O
0.4A
●
Built-in overcurrent, overvoltage and thermal protection circuits
●
Withstands external electromagnetic noises
●
TO220 equivalent full-mold package
External Dimensions
(unit: mm)
3.2
±
0.2
0.5
10.0
±
0.2
4.2
±
0.2
2.8
±
0.2
4.0
±
0.2
7.9
±
0.2
16.9
±
0.3
3
V
O
4
V
O
sense
R
3
Electrical Characteristics
Ratings
Parameter
Input Voltage
Output Voltage
Dropout Voltage
Line Regulation
Load Regulation
Output Voltage Temperature
Coefficient
Ripple Rejection
Quiescent Circuit Current
Overcurrent Protection Starting
Current
Vc Terminal
Output ON
( Tj= 25ºC, V
IN
=14V unless otherwise specified)
a
Symbol
V
IN
V
O
V
DIF
min
6
*
2
4.90
typ
max
30
*
1
Unit
V
V
V
V
mV
mV
mV/ºC
dB
Conditions
e
d
2
f
R
4
b
c
R
2
5.00
5.10
0.5
1.0
V
IN
=12 to 16V, I
O
= 0.4A
I
O
0.4A
I
O
1.0A
I
O
=0.4A, V
IN
= 6 to 16V
I
O
= 0 to 0.4A
I
O
=5mA, Ta = –10 to +100ºC
f =100 to 120Hz
I
O
= 0A
Vc
(on/off)
g
∆V
O LINE
∆V
O LOAD
∆V
O
/∆T
R
REJ
Iq
I
S1
V
C, IH
V
C, IL
I
C, IH
I
C, IL
3
1.2
*
4
30
100
±0.5
54
3
10
1
a : Pre-regulator
GND
b : Output ON/OFF control
c : Thermal protection
d : Over-input and overcurrent protection
e : Drive circuit
f : Error amplifier
g : Reference voltage
Standard Circuit Diagram
D
1
mA
A
V
2.0
*
5
OPEN
3
Control Voltage
Output OFF
Output ON
0.8
20
– 0.3
V
µA
mA
V
C
= 2.7V
V
C
= 0.4V
SI-3001S
2
4
1
+
DC input
+
Control Current
Output OFF
V
IN
C
1
C
2
C
O
DC output
V
O
Notes:
*1. Since P
D
(
max
)
= ( V
IN
– V
O
) • I
O
= 18( W ), V
IN
(
max
)
and I
O
(
max
)
may be limited depending on operating conditions. Refer to the
Ta -P
D
curve to compute the corresponding values.
*2. Refer to the dropout voltage.
*3. I
S1
rating shall be the point at which the output voltage V
O
(V
IN
= 14V, Io = 0.4A) drops to –5%.
*4. The output control terminal Vc is pulled up inside the IC. Each input level can be directly driven with LS-TTL ICs. Thus,
LS-TTL direct driving is also possible.
Co :
Output capacitor (47 to 100µF, 50V)
C
1
, C
2
: Input capacitors (C
1
: approx. 47µF, C
2
: approx. 0.33µF).
These are required for inductive input lines or long wiring.
Tantalum capacitors are recommended for C
1
and Co,
especially at low temperatures.
Protection diode. Required as protection against reverse
D
1
:
biasing between input and output.
(Recommended diode: Sanken EU2Z.)
8