Power Supplies 101

Power Supplies 101


This tutorial will discuss the definitions common to both linear and switching regulators and provide examples of each.  It will also provide specific walkthroughs of parts selection.
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Related Parts

ImageManufacturer Part NumberDescriptionPart StatusFunctionAvailable Quantity
SC189CSKTRT datasheet linkIC REG BUCK 1.2V 1.5A SYNC SOT23SC189CSKTRTIC REG BUCK 1.2V 1.5A SYNC SOT23ActiveStep-Down11638 - Immediate
SC189CSKTRT product page link
SC4215ASTRT datasheet linkIC REG LDO FIX/ADJ 2A 8SOICSC4215ASTRTIC REG LDO FIX/ADJ 2A 8SOICActivePositive Fixed or Adjustable7918 - Immediate
SC4215ASTRT product page link
SC4216STRT datasheet linkIC REG LDO FIX/ADJ 3A 8SOICSC4216STRTIC REG LDO FIX/ADJ 3A 8SOICActivePositive Fixed or Adjustable3466 - Immediate
SC4216STRT product page link
SC174MLTRT datasheet linkIC REG BUCK ADJ 4A SYNC 10MLPDSC174MLTRTIC REG BUCK ADJ 4A SYNC 10MLPDActiveStep-Down5800 - Immediate
SC174MLTRT product page link
SC173MLTRT datasheet linkIC REG BUCK ADJ 3A SYNC 10MLPDSC173MLTRTIC REG BUCK ADJ 3A SYNC 10MLPDActiveStep-Down5697 - Immediate
SC173MLTRT product page link
SC418ULTRT datasheet linkIC REG DL BUCK/LINEAR 20MLPQSC418ULTRTIC REG DL BUCK/LINEAR 20MLPQActiveStep-Down (Buck) (1), Linear (LDO) (1)2739 - Immediate
SC418ULTRT product page link
SC417MLTRT datasheet linkIC REG DL BCK/LINEAR SYNC 32MLPQSC417MLTRTIC REG DL BCK/LINEAR SYNC 32MLPQActiveStep-Down (Buck) Synchronous (1), Linear (LDO) (1)7416 - Immediate
SC417MLTRT product page link
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PTM Published on: 2011-09-27