AX1117AE33A

AX1117A 1A Low Dropout Linear Regulator  GENERAL DESCRIPTION AX1117A is a low dropout positive adjustable or fixed-mode regulator with minimum of 1A output current capability. The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus termination and low current 3.3V logic supply. AX1117A is also well suited for other applications such as VGA cards. AX1117A 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 with 6.4V to 12V input supply.  FEATURES - 1.5V maximum dropout at full load current Fast transient response Output current limiting Built-in thermal shutdown Good noise rejection Low-ESR Ceramic Capacitor (MLCC) Required for Stability. 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 3.3V, 5.0V Packages: SOT223, TO252.  BLOCK DIAGRAM Vin 3 2 Vout + + - 1.25V + CURRENT LIMIT 1 GND (FIXED) + Thermal Shutdown - 1 Adj 1/8 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.2.0 Dec.18, 2012 AX1117A  PIN ASSIGNMENT The packages of AX1117A are SOT223 and TO252; the pin assignment is given by: SOT223 ( Top View ) Name 3 VIN 2 VOUT 1 Adj (GND) A resistor divider from this pin to the VOUT Adj pin and ground sets the output voltage. (GND) (Ground only for Fixed-Mode) The output of the regulator. A minimum of 3.3uF EL capacitor (10mΩ ≤ ESR ≤ 1Ω) VOUT must be connected from this pin to ground to insure stability.(Note) 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 VIN voltage during the load transient response. This pin must always be 1.5V higher than VOUT in order for the device to regulate properly. (Note) Tab is VOUT TO252 ( Top View ) 3 2 VIN VOUT Adj (GND) 1 Description Tab is VOUT Note: To prevent oscillation, a 4.7uF minimum Y5V or a 1uF minimum X7R or X5R dielectric is strongly recommended if ceramics are used as input/output capacitors.  ORDER/MARKING INFORMATION Order Information AX 1117A X XX X Low Dropout Regulator Package VOUT E : SOT223-3L Blank : ADJ D : TO252-3L 15 : 1.5V 18 : 1.8V 25 : 2.5V 33 : 3.3V 50 : 5.0V Top Marking (SOT223-3L) ADJ Logo Packing Blank : Tube A : Taping Top Marking (TO252-3L) ADJ AX 1 1 1 A7 Y W WX Part number Functional code ID code: internal WW: 01~52 Year: A=2010 1=2011 2=2012 : : 9=2019 FIX Y WWX AX 1 1 1 A7 Y Y W WX Part number Functional code ID code: internal WW: 01~52 Year: A=2010 1=2011 2=2012 : : 9=2019 FIX AX 1A 1- V1 V7 AX A1 1- V1 V7 Output Voltage AX1117A-15: 1.5V AX1117A-18: 1.8V AX1117A-25: 2.5V AX1117A-33: 3.3V AX1117A-50: 5.0V Logo ID code: internal WW: 01~52 Year: A=2010 1=2011 2=2012 : : 9=2019 Output Voltage AX1117A-15: 1.5V AX1117A-18: 1.8V AX1117A-25: 2.5V AX1117A-33: 3.3V AX1117A-50: 5.0V Y Y WW X ID code: internal WW: 01~52 Year: A=2010 1=2011 2=2012 : : 9=2019 2/8 Axelite Confidential Materials, do not copy or distribute without written consent. Rev.2.0 Dec.18, 2012 AX1117A  ABSOLUTE MAXIMUM RATINGS Parameter DC Supply Voltage Operating Junction Temperature Range Maximum junction Temperature Power Dissipation(No heat sink ;No air flow) TA=25°C, TJ=125°C Storage Temperature Symbol Vin TOP TMJ SOT-223 TO-252 PD TST  ELECTRICAL CHARACTERISTICS (TA=25°C, Under Operating Conditions) Characteristics Conditions Min Operation Input 2.75 Voltage TJ=25°C, (VIN-OUT) Reference Voltage AX1117A-ADJ =1.5V 1.225 IOUT =10mA IOUT = 10mA, TJ = AX1117A-1.5 25°C, 1.470 3V≦VIN≦12V IOUT = 10mA, TJ = AX1117A-1.8 25°C, 1.764 3.3V≦VIN≦12V IOUT = 10mA, TJ = Output Voltage AX1117A-2.5 25°C, 2.450 4V≦VIN≦12V IOUT = 10mA, TJ = AX1117A-3.3 25°C, 3.235 4.8V≦VIN≦12V IOUT = 10mA, TJ = AX1117A-5.0 25°C, 4.900 6.5V≦VIN≦12V IOUT =10mA, Line Regulation AX1117A-XXX VOUT+1.5V