NOT RECOMMENDED FOR NEW DESIGN AP1117/AP1117I USE AZ1117C/E 1A DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Description Pin Assignments AP1117 is a low dropout positive adjustable or fixed-mode regulator with 1A output current capability. The product is voltage specifically SOT223 designed to provide well-regulated supply for low IC applications such as high-speed bus termination and low current 3.3V logic supply. ( Top View ) AP1117 is also well suited for other applications such as VGA cards. 3 VIN AP1117 is guaranteed to have lower than 1.4V dropout at full load current making it ideal to provide well-regulated outputs of 1.25 to 5.0 2 VOUT with 6.4V to 18V input supply. AP1117 is available both in commercial 1 Adj (GND) temperature grade (AP1117) and in industrial temperature range (AP1117I) (SOT223). Tab is VOUT Features 1.4V Maximum Dropout at Full Load Current Fast Transient Response Output Current Limiting Built-in Thermal Shutdown Good Noise Rejection 3-Terminal Adjustable or Fixed 1.5V, 1.8V,2.5V, 3.3V, 5.0V Operating Junction Temperature range 0C T +125C (All packages) J -20C T +125C (see ordering information) J -40C T +125C (see ordering information) J Lead-Free Packages: SOT223, Totally Lead-Free RoHS Compliant (Notes 1 & 2) SOT223,: Available in Green Molding Compound (No Br, Sb) Halogen and Antimony Free. Green Device (Note 3) Applications PC Peripheral Communication Consumer Equipment Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant. 2. See NOT RECOMMENDED FOR NEW DESIGN AP1117/AP1117I USE AZ1117C/E 5V 5V C1 C1 10F 10F VIN VIN V o VOUT VOUT 2.5V/1A 3.3V/1A R1 C2 C2 121 Adj GND 22F 22F R2 121 Tab is VOUT Tab is VOUT ( 5V/3.3V fixed output ) ( 5V/2.5V ADJ output ) R 2 Note: V V (1 ) o REF R 1 Pin Descriptions Pin Number I/O Pin Name Function A resistor divider from this pin to the V pin and ground sets the output voltage (Ground only for OUT 1 I Adj (GND) Fixed-Mode). The output of the regulator. A minimum of 4.7F capacitor (0.15 ESR 0.5) must be connected 2 O V OUT from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load 3 I V transient response. This pin must always be 1.3V higher than V in order for the device to regulate IN OUT properly. A minimum of 4.7F capacitor (0.15 ESR 0.5) must be connected from this pin to ground to insure stability. Functional Block Diagram 3 2 V V IN OUT + + + 1.25V CURRENT 1 LIMIT GND + (FIXED) Thermal Adj Shutdown 1 Absolute Maximum Ratings ( T = +25C, unless otherwise specified.) A Symbol Parameter Rating Unit 2 of 10 AP1117/AP1117I March 2015 Diodes Incorporated www.diodes.com Document number: DS31009 Rev. 24 - 3 - -
