A Product Line of Diodes Incorporated AS78XXA 1A 3-TERMINAL POSITIVE VOLTAGE REGULATOR Description Features The AS78XXA series are three terminal positive voltage regulators Output Current up to 1A designed for a wide variety of applications including local, on-card Fixed Output Voltages of 5V, 6V, 8V, 9V, 12V, 15V and 18V regulation. Output Voltage Accuracy of 4% over the Full Temperature Range The AS78XXA are complete with internal current limiting, thermal Internal Short Circuit Current Limiting shutdown protection, and safe-area compensation which make them Internal Thermal Overload Protection virtually immune from output overload. If adequate heat sinking is Output Transistor Safe-area Protection provided, these regulators can deliver output currents up to 1A. Low Load Regulation Stable Performance in High Temperature The AS78XXA are available in TO-252-2 (3), TO-252-2 (4), TO-252-2 TO-220-3 and TO-220F-3 (5), TO-220-3 and TO-220F-3 packages. Lead-Free Finish RoHS Compliant (Notes 1 & 2) Lead-Free Packages: TO-252-2 (3), TO-252-2 (4), TO-252-2 (5) Applications Totally Lead-Free RoHS Compliant (Notes 4 & 2) Available in Green Packages: TO-220-3 and TO-220F-3 High Efficiency Linear Regulator Lead-Free Finish RoHS Compliant (Notes 1 & 2) Post Regulation for Switching Supply Halogen and Antimony Free. Green Device (Note 3) Microprocessor Power Supply Lead-Free Packages, Available in Green Molding Compound: Mother Board TO-252-2 (3), TO-252-2 (4), TO-252-2 (5) Totally Lead-Free & Fully RoHS Compliant (Notes 4 & 2) Halogen and Antimony Free. Green Device (Note 3) Notes: 1. EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. All applicable RoHS exemptions applied. 2. See A Product Line of Diodes Incorporated AS78XXA Pin Assignments (Cont.) D Package (TO-252-2 (3)) (Option 1) (TO-252-2 (3)) (Option 2) 3 OUTP UT 3 OUTP UT 2 GND 2 GND INPUT 1 INPUT 1 (TO-252-2 (4)) (TO-252-2 (5)) 3 OUTPUT 3 OUTPUT 2 2 GND GND 1 1 INPUT INPUT Typical Applications Circuit AS78XXA V V 1 IN 3 OUT INPUT OUTPUT GND 0.33F 0.1F 2 Pin Descriptions Pin Number Pin Name Function 1 INPUT Voltage Input 2 GND Ground 3 OUTPUT Voltage Output 2 of 23 September 2013 AS78XXA Diodes Incorporated www.diodes.com Document number: DS36562 Rev. 3 - 2