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Related Links:

Datasheets:
SI-8008TM: DC-to-DC Step-Down Converter (PDF),

SI-8008TFE: DC-to-DC Step-Down Converter (PDF),

SI-8050TFE: 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-8008TFE, SI-8008TM, SI-8050TFE
DC-to-DC Step-Down Converter

Features

• 1.5 A output current supplied in a small power surface mount package
• High efficiency: 81% at V_IN = 15 V, I_O = 0.5 A,V_O = 5 V
• Requires only six external components (optional soft start requires an additional capacitor)
• Oscillation circuit built-in (frequency 300 kHz typical)
• Constant current type overcurrent protection circuit and an overheating protection circuit built in
• Soft start function built-in (can be implemented as an ON/OFF function, output OFF state at low level)
• Low consumption current 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-8008TFE, SI-8008TM, and SI-8050TFE 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 a small, high efficiency power supplies in compact TO252-5 (SC-63) or TO220F packages.

The switching regulator function realizes a high efficiency switching regulator operation without adjustment, requiring only six external support components, and an optional capacitor for soft start operation and an optional transistor for on/off control. The SI-8008TFE, SI-8008TM, and SI-8050TFE include overcurrent and overheating protection circuits.

Complete Part Numbers

Part Number	Package Type	RoHS Compliant	Part Composition/ RoHS Data	Temperature	Comments	Samples	Distributor Stock
SI-8008TFE	5-lead TO-220	Yes	--	-40 °C to  150 °C	new
SI-8008TM-TL	5-lead TO-252	Yes	--	-40 °C to  150 °C	new
SI-8050TFE	5-lead TO-220	Yes	--	-40 °C to  150 °C	new

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.