SI-8120JF PDF даташит
Спецификация SI-8120JF изготовлена «Sanken» и имеет функцию, называемую «DC/DC Converter». |
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Детали детали
Номер произв | SI-8120JF |
Описание | DC/DC Converter |
Производители | Sanken |
логотип |
9 Pages
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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
Step-Down
to 12.0 V, 1.5 A,
DC/DC Converter
FUNCTIONAL BLOCK DIAGRAM
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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
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
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Номер в каталоге | Описание | Производители |
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SI-8120JF | DC/DC Converter | Sanken |
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DataSheet26.com | 2020 | Контакты | Поиск |