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SI-8090S Datenblatt(PDF) 1 Page - Sanken electric

Teilenummer SI-8090S
Bauteilbeschribung  Full-Mold, Separate Excitation Step-down Switching Mode
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Hersteller  SANKEN [Sanken electric]
Direct Link  http://www.sanken-ele.co.jp/en
Logo SANKEN - Sanken electric

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46
ICs
1-1-3 DC/DC Converter ICs
■Lineup
Part Number
SI-8033S
SI-8050S
SI-8090S
SI-8120S
SI-8150S
VO(V)
3.3
5.0
9.0
12.0
15.0
IO(A)
3.0
■Absolute Maximum Ratings
Unit
V
W
W
°C
°C
V
°C/W
Ratings
43*
18(With infinite heatsink)
1.5(Without heatsink, stand-alone operation)
+125
–40 to +125
–1
5.5
Symbol
VIN
PD1
PD2
Tj
Tstg
VSW
θj-c
Parameter
DC Input Voltage
Power Dissipation
Junction Temperature
Storage Temperature
SW Terminal Applied Reverse Voltage
Thermal Resistance(junction to case)
■Features
• Compact full-mold package (equivalent to
TO220)
• Output current: 3.0A
• High efficiency: 79 to 91%
• Requires only 4 discrete components
• Internally-adjusted phase correction and output
voltage
• Built-in reference oscillator (60kHz)
• Built-in overcurrent and thermal protection
circuits
• Built-in soft start circuit (Output ON/OFF
available)
■Applications
• Power supplies for telecommunication equip-
ment
• Onboard local power supplies
*35V for SI-8033S
Full-Mold, Separate Excitation Step-down Switching Mode
SI-8000S Series
■Recommended Operating Conditions
Parameter
DC Input Voltage Range
Output Current Range
Operating Junction Temperature Range
Symbol
VIN
IO
Tjop
Unit
V
A
°C
Ratings
SI-8033S
SI-8050S
SI-8090S
SI-8120S
SI-8150S
5.5 to 28
7 to 40
12 to 40
15 to 40
18 to 40
0 to 3.0
–30 to +125
■Electrical Characteristics
(Ta=25°C)
Unit
V
%
kHZ
mV
mV
mV/°C
A
V
µA
Parameter
Output Voltage
Efficiency
Oscillation Frequency
Line Regulation
Load Regulation
Temperature Coefficient of
Output Voltage
Overcurrent Protection
Starting Current
Soft
Start Pin*2
Symbol
VO
Conditions
η
Conditions
f
Conditions
∆VOLINE
Conditions
∆VOLOAD
Conditions
∆VO/∆Ta
IS1
Conditions
VSSL
ISSL
Conditions
SI-8000S*1
SI-8000SS
Low-Level Voltage
Outflow Current at
Low Voltage
*1:“S” may be printed to the right of the marking (except SI-8090S, SI-8120S, SI-8150S).
*2:Pin 5 is a soft start pin. Soft start at power on can be performed with a capacitor connected to
this pin.
The output can also be turned ON/OFF with this pin.
The output is stopped by setting the voltage of this pin to VSSL or lower.
Soft-start pin voltage can be changed with an open-collector drive circuit of a transistor.
When using both the soft-start and ON/OFF functions together, the discharge current from C3
flows into the ON/OFF control transistor. Therefore, limit the current securely to protect the
transistor if C3 capacitance is large.
The ON/OFF pin is pulled up to the power supply in the IC, so applying the external voltage is
prohibited.
If this pin is not used, leave it open.
SI-8000S
SI-8000S
ON/OFF
5
ON/OFF
5
ON/OFF
C3
C3
5
VOUT. ON/OFF
Soft start
Soft start
+VOUT. ON/OFF
SI-8000S
Ratings
SI-8033S
SI-8050S
SI-8090S
SI-8120S
SI-8150S
min.
typ.
max.
min.
typ.
max.
min.
typ.
max.
min.
typ.
max.
min.
typ.
max.
3.17
3.30
3.43
4.80
5.00
5.20
8.55
9.00
9.45
11.50
12.00
12.50
14.25
15.00
15.75
3.234
3.30
3.366
4.90
5.00
5.10
VIN=15V, IO=1.0A
VIN=20V, IO=1.0A
VIN=21V, IO=1.0A
VIN=24V, IO=1.0A
VIN=25V, IO=1.0A
79
84
88
90
91
VIN=15V, IO=1.0A
VIN=20V, IO=1.0A
VIN=21V, IO=1.0A
VIN=24V, IO=1.0A
VIN=25V, IO=1.0A
60
60
60
60
60
VIN=15V, IO=1.0A
VIN=20V, IO=1.0A
VIN=21V, IO=1.0A
VIN=24V, IO=1.0A
VIN=25V, IO=1.0A
25
80
40
100
50
120
60
130
60
130
VIN=8 to 28V, IO=1.0A
VIN=10 to 30V, IO=1.0A
VIN=15 to 30V, IO=1.0A
VIN=18 to 30V, IO=1.0A
VIN=21 to 30V, IO=1.0A
10
30
10
40
10
40
10
40
10
40
VIN=15V, IO=0.5 to 1.5A
VIN=20V, IO=0.5 to 1.5A
VIN=21V, IO=0.5 to 1.5A
VIN=24V, IO=0.5 to 1.5A
VIN=25V, IO=0.5 to 1.5A
±0.5
±0.5
±1.0
±1.0
±1.0
3.1
3.1
3.1
3.1
3.1
VIN=15V
VIN=20V
VIN=21V
VIN=24V
VIN=25V
0.2
0.2
0.2
0.2
0.2
15
25
35
15
25
35
15
25
35
15
25
35
15
25
35
VSSL=0.2V


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