SI-8050JF データシートの表示（PDF） - Allegro MicroSystems
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SI-8050JF Datasheet PDF : 9 Pages
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SI-8050JF
Step-Down to 5.0 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-8050JF 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 5.0 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-8050JD.
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
■ 7 V to 40 V Input Range
■ 1.5 A Output Current at 5.0 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-8050JF .
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from Allegro MicroSystems
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