SPI-8010A Datasheet, PDF (1/9 Pages) Allegro MicroSystems – 3 A, DC/DC Step-Down Converter

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ABSOLUTE MAXIMUM RATINGS
Input Voltage, V_I . . . . . . . . . . . . . 53 V
Output Current, I_O . . . . . . . . . . . . . 3 A*
Junction Temperature, T_J . . . . +125°C
Storage Temperature Range,
T_S . . . . . . . . . . . . -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.
SPI-8010A
3 A, DC/DC Step-Down 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 equipment, the SPI-8010A dc/dc step-
down (buck) converter offers a constant 250 kHz switching frequency
essential for small external components. The n-channel high-current
FET is included on the die along with the oscillator, control, and logic
circuitry.
A wide input voltage range and integrated thermal and overcurrent
protection enhance overall system reliability. Reference accuracy and
excellent temperature characteristics are provided. A chip-enable input
gives the designer complete control over power up, standby, or power
down.
This device is supplied in a 16-lead surface-mount plastic SOIC
with exposed pad to provide a low-resistance path for maximum power
dissipation, low junction temperature, and improved reliability.
FEATURES
■ Wide 8 V to 50 V Input Range
■ Adjustable 1.2 V to 24 V Output Range
■ 3% Output Voltage Tolerance
■ To 3 A Output Current
■ Foldback Current Limiting
■ Constant 250 kHz Switching Frequency
■ 400 µA Maximum Standby Current
■ 1.0 V Feedback Reference Voltage
■ Soft Start Avoids Supply Voltage Dip
■ Remote Voltage Sensing
■ Exposed Pad for Superior Heat Dissipation
■ Thermal Protection
APPLICATIONS
■ TVs, VCRs, Electronic Games
■ Embedded Core, Memory, or Logic Supplies
■ Printers and Other Office Equipment
■ Industrial Machinery
Always order by complete part number, e.g., SPI-8010A-TL ,
where “-TL” indicates tape and reel.
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