si-3157b Sanken Electric Co., Ltd., si-3157b Datasheet
si-3157b
Manufacturer Part Number
si-3157b
Description
5-terminal, Full-mold, Low Dropout Voltage Linear Regulator Ics
Manufacturer
Sanken Electric Co., Ltd.
Datasheet
1.SI-3157B.pdf
(3 pages)
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Manufacturer
Quantity
Price
Company:
Part Number:
SI-3157B
Manufacturer:
ROHM
Quantity:
2 775
Part Number:
SI-3157B
Manufacturer:
SANKEN
Quantity:
20 000
1-1-1 Linear Regulator ICs
■Features
■Applications
■Electrical Characteristics
*1: V
*2: Refer to the Dropout Voltage parameter. (Refer to Setting DC Input Voltage on page 9.)
*3: I
*4: These products cannot be used in the following applications because the built-in foldback-type overcurrent protection may cause errors during start-up stage.
*5: Output is ON even when output control terminal V
*6: When setting output voltage to 5V or lower, input voltage needs to be set to 6V or higher to operate stably.
Output Voltage
(Reference Voltage V
SI-3025B)
Dropout Voltage
Line Regulation
Load Regulation
Temperature Coefficient of Output
Voltage (SI-3025B: Temperature
Coefficient of Reference Voltage)
Ripple Rejection
Quiescent Circuit Current
Overcurrent Protection
Starting Current
V
Terminal
• Compact full-mold package (equivalent to
• Output current: 0.27A
• Low dropout voltage: V
• Output ON/OFF control terminal is compatible
• Built-in foldback overcurrent and thermal
• Accuracy of overcurrent protection starting
• Variable output voltage type (SI-3025B) also
• For BS and CS antenna power supplies
• Electronic equipment
Input Voltage
C
SI-3000B Series
28
TO220)
with LS-TTL. (It can be driven directly by LS-TTL
or standard CMOS logic.)
protection circuits
current
SI-3157B : 0.3 to 0.7A (V
SI-3025B : 0.3 to 0.7A
available
(1) Constant current load (2) Positive and negative power supply (3) Series-connected power supply (4) V
S
IN(max)
1 is specified at the 5% drop point of output voltage V
*5
Parameter
and I
ICs
Control Voltage (Output ON)
Control Voltage (Output OFF)
Control Current
(Output ON)
(Output OFF)
Control Current
*3,4
(When V
0.3 to 0.75A
O(max)
(When V
ADJ
are restricted by the relation P
for
IN
IN
=18V, at V
=18V, at V
DIF
IN
≤ 0.5V (at I
=18V)
(∆V
∆V
∆V
Symbol
∆V
(V
V
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
Conditions
V
Conditions
Conditions
I
O
R
I
V
ADJ
C.
C.
O
V
C.
V
OLOAD
O
I
C.
=15.7V)
OLINE
ADJ
REJ
I
S1
DIF
/∆T
q
=11.7V)
IN
O
IH
IL
/∆T
IH
IL
)
a
O
a
)
=0.27A)
5-Terminal, Full-Mold, Low Dropout Voltage Linear Regulator ICs
D(max)
C
is open. Each input level is equivalent to LS-TTL level. Therefore, the device can be driven directly by LS-TTLs.
14.92
min.
0.3
2.0
=(V
*2
O
■Absolute Maximum Ratings
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)
on the condition that V
IN
-V
V
IN
O
)•I
=18V, I
V
V
V
O
IN
IN
IN
=14(W).
=18V, f=100 to 120H
V
=17 to 27V, I
=18V, I
Parameter
V
IN
IN
O
=18V, I
SI-3157B
=5mA, T
=18V, I
I
V
V
V
O
15.70
≤0.27A
IN
C
C
±1.5
typ.
120
=2.7V
=0.4V
30
O
54
=18V
3
=0 to 0.27A
O
O
=0.2A
j
=0A
=0 to 100°C
O
IN
=0.2A
=V
O
+3V, I
Z
O
=0.2A.
16.48
max.
–0.3
27
300
0.5
0.7
0.8
90
10
20
*1
Symbo
T
P
P
T
V
V
θ
θ
I
T
OP
O
D1
D2
stg
j-c
j-a
IN
C
j
Ratings
O
adjustment by raising ground voltage
66.7(Without heatsink, stand-alone operation)
1.5(Without heatsink, stand-alone operation)
2.448
min.
6
0.3
0.3
2.0
*2,6
V
IN
14(With infinite heatsink)
=V
V
V
IN
V
IN
O
IN
=(V
V
V
=V
+3V, I
V
=V
IN
IN
V
–40 to +125
–30 to +100
–40 to +125
IN
O
=18V, at V
=18V, at V
O
IN
=V
O
Ratings
+1) to 27V, I
+3V, f=100 to 120H
=V
+3V, I
0.27
SI-3025B
I
O
7.0
V
V
V
O
35
O
=5mA, T
O
2.550
+3V, I
C
C
IN
≤0.27A
±0.5
+3V, I
typ.
=2.7V
=0.4V
*1
54
3
O
=0 to 0.27A
O
O
O
O
=11.7V
=15.7V
=0.2A
j
=0A
=0 to 100°C
O
=0.27A
(T
a
Z
=25°C unless otherwise specified)
2.652
max.
27
0.75
–0.3
0.5
0.7
0.8
10
10
10
20
*1
°C/W
°C/W
Unit
(SI-3025B:mV/V)
°C
°C
°C
(SI-3025B:mV/V)
W
W
V
V
A
mV/°C
Unit
(T
mA
mA
mV
mV
dB
µ A
V
V
V
A
V
a
=25°C)
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si-3157b Summary of contents
Page 1
... DIF O • 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 and thermal protection circuits • Accuracy of overcurrent protection starting current SI-3157B : 0.3 to 0.7A (V =18V) IN SI-3025B : 0.3 to 0.7A (When V =18V =15.7V 0.3 to 0.75A (When V =18V =11 ...
Page 2
... With Silicone Grease Heatsink: Aluminum 10 5 Without heatsink 0 – Ambient Temperature T (°C) a ±0.2 a. Part Number b. Lot Number Pin Assignment SI-3157B q GND ±0.1 2 Sense Plastic Mold Package Type Flammability: UL94V-0 Product Mass: Approx. 2. Equivalent to LS-TTL : Output capacitor (47 to 100 µ ...
Page 3
... Input Voltage V (V) IN Output ON/OFF Control 20 V =18V Output ON/OFF Control V ( Temperature Coefficient of Output Voltage(SI-3157B) 16.0 V =18V IN l =0A O 15.9 15.8 15.7 15.6 15.5 15.4 15.3 –40 – 100 120 140 Ambient Temperature T (°C) C Load Regulation 16 ...