SI-8001FDE, SI-8001FDL, SI-8001FFE: DC-to-DC Step-Down Converter

The SI-8001FDE, SI-8001FDL, and SI-8001FFE DC voltage regulators are DC-to-DC buck converters that attain an oscillation frequency of 300 kHz, and have an integrated miniaturized choke coil, allowing them to serve as small, high efficiency power supplies in compact TO263 or TO220F packages.

The internal switching regulator function provides high efficiency switching regulation without any need for adjustment. These devices require only six external support components. Optional on/off control can be performed using a transistor. The SI-8001FDE, SI-8001FDL, and SI-8001FFE include overcurrent and overtemperature protection circuits.

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  • 3.5 A output current supplied in a small, surface mount power package
  • High efficiency: 83% at VIN = 15 V, IO = 2.0 A,VO = 5 V
  • Requires only six external components
  • Oscillation circuit built-in (frequency 300 kHz typical)
  • Constant-current mode overcurrent protection circuit and overtemperature protection circuit built-in
  • Output-on state at low level
  • Low current consumption during output-off state

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Product Image Packages

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
SI-8001FDE-TL 5-lead TO-263 -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
SI-8001FDL-TL 5-lead TO-263 -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
SI-8001FFE 5-lead TO-220 -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock

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