SI-8008HD, SI-8008HFE, SI-8050HFE: DC-to-DC Step-Down Converter

The SI-8008HD, SI-8008HFE, and SI-8050HFE DC voltage regulators are DC-to-DC buck converters that attain an oscillation frequency of 150 kHz, and have an integrated miniaturized choke coil, allowing them to serve as small, high efficiency power supplies in compact TO-263 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. The optional soft start function requires an additional capacitor. Optional on/off control can be performed using a transistor. The SI-8008HD, SI-8008HFE, and SI-8050HFE include overcurrent and overtemperature protection circuits.

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  • 5.5 A output current supplied in a small, surface mount power package
  • High efficiency: 83% at VIN = 15 V, IO = 3.0 A,VO = 5 V
  • Requires only seven external components (optional soft start requires an additional capacitor)
  • Oscillation circuit built-in (frequency 150 kHz typical)
  • Constant-current mode overcurrent protection circuit and overtemperature protection circuit built-in
  • Soft start function built-in (can be implemented as an on/off function; output-off 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
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
SI-8008HD-TL 5-lead TO-263 -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
SI-8008HFE 5-lead TO-220 -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock
SI-8050HFE 5-lead TO-220 -40°C to 150°C Yes View Data New Contact your
local sales rep
Check Stock

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