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Related Links:

Datasheets:
SI-8001FDE: DC-to-DC Step-Down Converter (PDF),

SI-8001FFE: DC-to-DC Step-Down Converter (PDF),

SI-8001FDL: DC-to-DC Step-Down Converter (PDF)

Selection Guides:
Sanken Switching Regulators

when this product is updated

Press Releases:
SI-8000 Series: Allegro Announces New DC-to-DC Step-Down Converter Series

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

Features

• 3.5 A output current supplied in a small, surface mount power package
• High efficiency: 83% at V_IN = 15 V, I_O = 2.0 A,V_O = 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

Applications

• DVD recorder
• FPD TV
• Telecommunications equipment
• Office automation equipment, such as printers
• On-board local power supply
• Output voltage regulator for second stage of SMPS (switched mode power supply)

Description

The SI-8001FDE, SI-8001FDL, and SI-8001FFE DC voltage regulators are DC-to-DC buck convertors 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.

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Distributor Stock	Samples
SI-8001FDE-TL	5-lead TO-263	Yes	--	-40 °C to  150 °C	new		Contact Local Sales Representative or check distributor stock
SI-8001FDL-TL	5-lead TO-263	Yes	--	-40 °C to  150 °C	new		Contact Local Sales Representative or check distributor stock
SI-8001FFE	5-lead TO-220	Yes	--	-40 °C to  150 °C	new		Contact Local Sales Representative or check distributor stock

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.