SI-8120JF: Step-Down to 12.0 V 1.5 A DC/DC Buck 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.

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • 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

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Functional Block Diagram Package and Pinout Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
SI-8120JF 5-lead TO-220 -40°C to 125°C Yes View Data New Contact your
local sales rep
Check Stock

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