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Related Links:

Datasheets:
SPI-8001TW: Dual 1.5 A, DC/DC Step-Down Converter (PDF)

Selection Guides:
Sanken Switching Regulators

when this product is updated

SPI-8001TW
Dual 1.5 A, DC/DC Step-Down Buck Converter

Features

• To 20 V Input Range
• Adjustable 1 V to 16 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

Applications

• TVs, VCRs, Electronic Games
• Embedded Core, Memory, or Logic Supplies
• Printers and Other Office Equipment
• Industrial Machinery

Description

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-8001TW 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. A similar device, with increased input and output voltage ratings, is the SPI-8002TW.

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.

Functional Block Diagram

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
SPI-8001TW	16-lead SOIC	Yes	--	-40 °C to  135 °C	new	Due to warehouse relocation, samples will be unavailable until August 1, 2008. Contact your sales rep or purchase from distributor.

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.