PART OBSOLETE - USE AZ1117 AZ317 3-TERMINAL 1A ADJUSTABLE VOLTAGE REGULATOR Description Features The AZ317 is an adjustable three-terminal positive voltage regulator Typical 1% Output Voltage Tolerance with a very low dropout of 1.2V at 1A output current. Using 2 external Typical 0.01%/V Line Regulation resistors, the AZ317 can provide an adjustable output voltage down to Typical 0.2% Load Regulation 1.25V. Very Low Dropout Voltage: 1.2V at 1A Output Current Trimmed Current Limit The AZ317 includes a circuit of trimmed bandgap reference to assure On-chip Thermal Protection output voltage accuracy to be within 1%. It also provides current Operation Junction Temperature: 0 to +125C limiting and thermal shutdown. The current limit is trimmed to ensure Lead-Free Packages: SOT223, TO220-3, TO252-2 (1) and specified output current and controlled short-circuit current. The On- TO252-2 (3) chip thermal limiting provides protection against any combination of Totally Lead-Free RoHS Compliant (Notes 1 & 2) overload and ambient temperature that would create excessive Lead-Free Packages, Available in Green Molding Compound: junction temperature. SOT223 The AZ317 is available in the standard SOT223, TO220-3, TO252-2 Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2) (1) and TO252-2 (3) power packages. Halogen and Antimony Free. Green Device (Note 3) Applications PC Motherboard LCD Monitor Graphic Card DVD Player Network Interface Card/Switch Telecom Equipment Printer and other Peripheral Equipment Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant. 2. See PART OBSOLETE - USE AZ1117 AZ317 Pin Assignments (Cont.) (Top View) (Top View) 3 INPUT 3 INPUT 2 OUTPUT 2 OUTPUT V OUT 1 ADJ 1 ADJ TO252-2 (1) TO252-2 (3) (Option 1) (Top View) INPUT 3 2 OUTPUT 1 ADJ TO252-2 (3) (Option 2) Typical Applications Circuit AZ317 3 2 V IN INPUT OUTPUT V OUT * ** + + R1 ADJ C IN C O 240 0.1F 1 1.0F R2 * = C is required if the regulator is located near power supply filter. IN **= C is needed for stability and it improves transient response. O V = V (1+R2/R1) + I R2 OUT REF ADJ Since I is controlled to less than 100A, the error associated with this term is negligible in most applications. ADJ 2 of 16 AZ317 October 2018 Diodes Incorporated www.diodes.com Document number: DS40533 Rev. 3 - 4 OBSOLETE PART DISCONTINUED