NOT RECOMMENDED FOR NEW DESIGN USE AZ1084C AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Features General Description AP1084 is a low dropout positive adjustable or fixed-mode 1.4V Maximum Dropout at Full Load Current regulator with 5.0A output current capability. The product is Built-in Thermal Shutdown specifically designed to provide well-regulated supply for low Output Current Limiting voltage IC applications such as high-speed bus termination and Adjustable Output Voltage or Fixed 1.5V, 1.8V, 2.5V, low current 3.3V logic supply. AP1084 is also well suited for other 3.3V, 5.0V applications such as VGA cards. AP1084 is guaranteed to have Fast Transient Response lower than 1.4V dropout at full load current making it ideal to Good Noise Rejection provide well-regulated outputs of 1.25 to 3.3V with 4.7 to Lead Free Packages: TO252-3L, TO263-3L and 12V input supply. TO220-3L TO252-3L, TO263-3L and TO220-3L: Available in Green Molding Compound (No Br, Sb) Lead Free Finish/RoHS Compliant (Note 1) Typical Application Circuit 5.0V to 3.3V Fixed Mode Regulator Adjustable Regulator 5V 5V C1 C1 100uF 100uF V V in in V 2.5V/5A V out out 3.3V/5A R1 121 C2 C2 Adj GND 100uF 100uF R2 121 Tab is V Tab is V out out R 2 Note: V V (1 ) O REF R 1 AP1084 Rev. 9 1 of 11 JANUARY 2010 DS31070 www.diodes.com Diodes Incorporated AP1084 5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Ordering Information AP1084 X XX X - X Package Vout Lead Free Packing D : TO252-3L Blank = Adj L : Lead Free U : Tube K : TO263-3L 13 : Tape & Reel G : Green 15 = 1.5V T : TO220-3L 18 = 1.8V 25 = 2.5V 33 = 3.3V 50 = 5.0V Tube 13 Tape and Reel Package Packaging Part Number Part Number Device Code (Note 2) Quantity Quantity Suffix Suffix AP1084DXXL-13 D TO252-3L NA NA 2500/Tape & Reel -13 AP1084DXXG-13 D TO252-3L NA NA 2500/Tape & Reel -13 AP1084KXXL-13 K TO263-3L NA NA 800/Tape & Reel -13 AP1084KXXG-13 K TO263-3L NA NA 800/Tape & Reel -13 AP1084TXXL-U T TO220-3L 50 -U NA NA AP1084TXXG-U T TO220-3L 50 -U NA NA Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at