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Sanken electric |
qSI-3000B Series
SI-3000B Series
5-Terminal, Multi-Function, Full-Mold, Low Dropout Voltage Dropper Type
sFeatures
• Compact full-mold package (equivalent to TO220)
• Output current: 0.27A
• Low dropout voltage: VDIF≤0.5V (at IO=0.27A)
• Output ON/OFF control terminal is compatible with LS-TTL. (It may be directly
driven by LS-TTL or standard CMOS logic.)
• Built-in foldback overcurrent, thermal protection circuits
• Highly accurate overcurent protection starting current
SI-3157B : 0.3 to 0.7A (VIN=18V)
SI-3025B : 0.3 to 0.7A (When VIN=18V, setting VO=15.7V)
0.3 to 0.75A (When VIN=18V, setting VO=11.7V)
• Variable output voltage type (SI-3025B) also available
sApplications
• For BS and CS antenna power supplies
• Electronic equipment
sAbsolute Maximum Ratings
Paarameter
DC Input Voltage
Voltage of Output Control Terminal
DC Output Current
Power Dissipation
Junction Temperature
Ambient Operating Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient air)
Symbol
VIN
VC
IO
PD1
PD2
Tj
Top
Tstg
Rth(j-c)
Rth(j-a)
Ratings
35
VIN
0.27*1
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)
(Ta=25°C)
Unit
V
V
A
W
W
°C
°C
°C
°C/W
°C/W
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qSI-3000B Series
sElectrical Characteristics
Parameter
Symbol
Input Voltage
VIN
Output Voltage
VO
(SI-3025B: Reference
(VREF)
Voltage)
Conditions
Dropout Voltage
VDIF
Conditions
Line Regulation
∆VOLINE
Conditions
Load Regulation
∆VOLOAD
Conditions
Temperature Coefficient of Output ∆VO/∆Ta
Voltage (SI-3025B: Temperature (∆VREF/∆Ta)
Coefficient of Reference Voltage) Conditions
Ripple Rejection
RREJ
Conditions
Quiescent Circuit
Iq
Current
Conditions
IS1
Overcurrent Protection Conditions
Starting Current*3,4
Conditions
Control Voltage (Output ON) VC. IH
Control Voltage (Output OFF) VC. IL
VC
Control Current
IC. IH
Terminal*5 (Output ON)
Conditions
Control Current IC. IL
(Output OFF)
Conditions
min.
*2
SI-3157B
typ.
Ratings
max.
27*1
min.
6*2,6
(Ta=25°C unless otherwise specified)
SI-3025B
typ.
max.
27*1
Unit
V
14.92
15.70
16.48
VIN=18V, IO=0.2A
IO≤0.27A
30
VIN=17 to 27V, IO=0.2A
120
VIN=18V, IO=0 to 0.27A
0.5
90
300
±1.5
VIN=18V, IO=5mA, Tj=0 to 100°C
54
VIN=18V, f=100 to 120HZ
3 10
VIN=18V, IO=0A
0.3 0.7
VIN=18V
2.0
0.8
20
VC=2.7V
–0.3
VC=0.4V
2.448
2.550
2.652
VIN=VO+3V, IO=0.2A
0.5
IO≤0.27A
10
VIN=(VO+1) to 27V, IO=0.27A
10
VIN=VO+3V, IO=0 to 0.27A
±0.5
VIN=VO+3V, IO=5mA, Tj=0 to 100°C
54
VIN=VO+3V, f=100 to 120HZ
3 10
VIN=VO+3V, IO=0A
0.3 0.75
When VIN=18V, setting VO=11.7V
0.3 0.7
When VIN=18V, setting VO=15.7V
2.0
0.8
20
VC=2.7V
–0.3
VC=0.4V
V
V
mV
(3025B:
mV/V)
mV
(3025B:
mV/V)
mV/ °C
dB
mA
A
V
µA
mA
*1: VIN(max) and IO(max) are restricted by the relation PD(max)=(VIN-VO)•IO=14(W).
*2: Refer to the dropout voltage.(Refer to Setting DC Input Voltage on page 7.)
*3: IS1 is specified at –5(%) drop point of output voltage VO on the condition that VIN=VO+3V, IO=0.2A.
*4: A foldback type overcurrent protection circuit is built into the IC regulator. Therefore, avoid 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
*5: Output is ON even when output control terminal VC is open. Each input level is equivalent to LS-TTL. Therefore, it may be directly driven by an
LS-TTL circuit.
*6. When setting output voltage to 5V or less, input voltage needs to be set to 6V or over to operate stably.
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