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SI-8120JF PDF даташит

Спецификация SI-8120JF изготовлена ​​​​«Sanken» и имеет функцию, называемую «DC/DC Converter».

Детали детали

Номер произв SI-8120JF
Описание DC/DC Converter
Производители Sanken
логотип Sanken логотип 

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SI-8120JF Даташит, Описание, Даташиты
SwRitecghuilnagtors
SI-8120JF
Step-Down to 12.0 V, 1.5 A, DC/DC Converter
Designed to meet high-current requirements at high efficiency in
industrial and consumer applications; embedded core, memory, or logic
supplies; TVs, VCRs, and office or telecommunications equipment, the
SI-8120JF dc/dc step-down (buck) converter offers a constant 125 kHz
switching frequency essential for low EMI noise. The npn switch is
included on the die along with the oscillator, control, and logic circuitry
requiring only four external components for a regulated 12.0 V output at
up to 1.5 A.
A wide input voltage range and integrated thermal and overcurrent
protection enhance overall system reliability. Reference accuracy and
excellent temperature characteristics are provided. An output-enable
input gives the designer complete control over power up, standby, or
power down.
This device is supplied in a fully molded TO-220-style 5-lead
flange-mounted , high power, isolated plastic package. A similar device
in a lower-power surface-mount plastic package is the SI-8120JD.
ABSOLUTE MAXIMUM RATINGS
Input Voltage, VI . . . . . . . . . . . . . 43 V
Output Current, IO . . . . . . . . . . . 1.5 A*
Enable Input Voltage, VOE . . . . . . . . . . . 6 V
Junction Temperature, TJ . . . . +125°C
Storage Temperature Range,
TS . . . . . . . . . . . . -40°C to +125°C
* Output current rating is limited by input
voltage, duty cycle, and ambient tempera-
ture. Under any set of conditions, do not
exceed a junction temperature of +125°C.
FEATURES
14 V to 40 V Input Range
1.5 A Output Current at 12 V
2% Output Voltage Tolerance
Foldback Current Limiting
Constant 125 kHz Switching Frequency
200 µA Maximum Standby Current
Soft Start Prevents Supply Voltage Dip
Remote Voltage Sensing
Thermal Protection
APPLICATIONS
TVs, VCRs, Electronic Games
Embedded Core, Memory, or Logic Supplies
Printers and Other Office Equipment
Industrial Machinery
Telecommunications Equipment
Always order by complete part number, e.g., SI-8120JF .
Sanken Power Devices
from Allegro MicroSystems









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SI-8120JF Даташит, Описание, Даташиты
SI-8120JF
Step-Down
to 12.0 V, 1.5 A,
DC/DC Converter
FUNCTIONAL BLOCK DIAGRAM
SwRitecghuinlagtors
Allowable Package Power Dissipation
Recommended Operating Conditions
DC Input Voltage (IO 1 A)
(IO 1.5 A)
DC Output Current (VI 6.3 V)
Operating Junction Temp.
Min
14
15
0
-30
Max Units
15 V
40 V
1.5 A
+125 °C
For the availability of parts meeting -40°C require-
ments, contact Allegro’s Sales Representative.
This data sheet is based on Sanken data sheet SSJ-02322
115 Northeast Cutoff, Box 15036
2 Worcester, Massachusetts 01615-0036
Copyright © 2004, 2005 Allegro MicroSystems, Inc.









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SI-8120JF Даташит, Описание, Даташиты
SwRitecghuinlagtors
SI-8120JF
Step-Down
to 12.0 V, 1.5 A,
DC/DC Converter
ELECTRICAL CHARACTERISTICS at TA = +25°C, VI = 24 V, IO = 0.5 A (unless otherwise noted).
Limits
Characteristic
Symbol Test Conditions
Min. Typ. Max. Units
Output Voltage
Ref. Volt. Temp. Coeff.
Output Short-Circuit Current
Efficiency
VO
aVref
IOM
η
Operating Frequency
f
Line Regulation
Load Regulation
Quiescent Current
VO(VI)
VO(IO)
IIQ
Chip Enable Voltage
Soft-Start Current
VCE
ISS
See note
VI = 18 V ~ 30 V, IO = 0.5 A
VI = 24 V, IO = 0.2 A ~ 0.8 A
IO = 0 A
VCE = 0.3 V
Converter turn-off voltage
VSS = 0 V
11.76 12.00 12.24
— ±0.5 —
1.6 — —
— 88 —
— 125 —
— 60 130
— 10 40
— 7.0 —
— — 200
— — 0.5
— — -100
V
mV/°C
A
%
kHz
mV
mV
mA
µA
V
µA
Typical values are given for circuit design information only.
Note: Output short-circuit current is at point where output voltage has decreased 5% below VO(nom).
SI-8120JF
Test Circuit
C1 = 220 µF/50 V
C2 = 470 µF/25 V
C3 = 0.47 µF/10 V
L1 = 100 µH
D1 = Sanken RK-16
www.allegromicro.com
3










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Номер в каталогеОписаниеПроизводители
SI-8120JFSeparate Excitation Step-down Switching ModeETC
ETC
SI-8120JFDC/DC ConverterSanken
Sanken

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