SPI-8002TW: Dual 1.5 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-8002TW dc/dc step-down (buck) converter offers a constant 250 kHz switching frequency essential for small external components. The n-channel highcurrent 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.

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  • To 38 V Input Range
  • Adjustable 1 V to 24 V Output Range
  • 1% Output Voltage Tolerance
  • To 1.5 A Output Current
  • Foldback Current Limiting
  • Constant 250 kHz Switching Frequency
  • 1.0 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

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Functional Block Diagram Package and Pinout Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
SPI-8002TW 16-lead SOIC -40°C to 135°C Yes View Data New Contact your
local sales rep
Check Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

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