AP1117 1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR General Description 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, 1.9V, 2.5V, 3.3V, 5.0V 3-Pin SOT223 and PowerDITM5 (Under Development) packages AP1117 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. AP1117 is also well suited for other applications such as VGA cards. 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 with 6.4V to 12V input supply. Pin Connections * * PC peripheral Communication Ordering Information AP 1117 X XX X X Low Dropout Regulator Vout Package SK : SOT223-3L PB : PowerDITM5 Device (Note 1) Package Packaging Code (Note 2) AP1117SK AP1117SK15 AP1117SK18 AP1117SK19 AP1117SK25 AP1117SK33 AP1117SK50 AP1117PB AP1117PB15 AP1117PB18 AP1117PB19 AP1117PB25 AP1117PB33 AP1117PB50 DS30715 Rev. 2 - 2 SK SK SK SK SK SK SK PB PB PB PB PB PB PB SOT-223 SOT-223 SOT-223 SOT-223 SOT-223 SOT-223 SOT-223 PowerDITM5 PowerDITM5 PowerDITM5 PowerDITM5 PowerDITM5 PowerDITM5 PowerDITM5 Blank : ADJ 15 : 1.5V 18 : 1.8V 19: 1.9V 25 : 2.5V 33 : 3.3V 50 : 5.0V Lead Free Blank : Lead-Free G : Green 7" Tape and Reel Quantity Part Number Suffix 500/Tape & Reel 500/Tape & Reel 500/Tape & Reel 500/Tape & Reel 500/Tape & Reel 500/Tape & Reel 500/Tape & Reel NA NA NA NA NA NA NA -7 -7 -7 -7 -7 -7 -7 NA NA NA NA NA NA NA 1 of 9 www.diodes.com Packing Blank : Tube or bulk -7/-13 : Taping 13" Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel -13 -13 -13 -13 -13 -13 -13 -13 -13 -13 -13 -13 -13 -13 AP1117 (c) Diodes Incorporated AP1117 1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Typical Application Circuit 5V 5V C1 100uF C1 100uF Vin Vin Vout C2 100uF GND Vo Vout 3.3V/1A Adj Tab is Vout R1 121 R2 121 2.5V/1A C2 100uF Tab is Vout ( 5V/3.3V fixed output ) ( 5V/2.5V ADJ output ) Note: Vo = VREF (1+ R2 ) R1 Connection Diagram 3 PIN SOT223 3 PIN PowerDITM5 ( Top View ) ( Top View ) 3 Vin 2 Vout 1 Adj (GND) 3 Vin Vout 1 2 Adj (GND) Tab is Vout DS30715 Rev. 2 - 2 2 of 9 www.diodes.com AP1117 (c) Diodes Incorporated AP1117 1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Block Diagram Vin 3 2 Vout + - + 1.25V CURRENT LIMIT 1 + - Thermal Shutdown + GND (FIXED) 1 Adj Pin Descriptions NAME I/O PIN # Adj (GND) I 1 A resistor divider from this pin to the Vout pin and ground sets the output voltage. (Ground only for Fixed-Mode) Vout O 2 The output of the regulator. A minimum of 10uF capacitor (0.15 ESR 20) must be connected from this pin to ground to insure stability. 3 The input pin of regulator. Typically a large storage capacitor (0.15 ESR 20) is connected from this pin to ground to insure that the input voltage does not sag below the minimum dropout voltage during the load transient response. This pin must always be 1.3V higher than Vout in order for the device to regulate properly. Vin DS30715 Rev. 2 - 2 I FUNCTION 3 of 9 www.diodes.com AP1117 (c) Diodes Incorporated AP1117 1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Absolute Maximum Ratings Symbol Parameter Rating Unit Vin DC Supply Voltage 12 to 18 V TOP Operating Junction Temperature Range 0 to +125 oC TMJ Maximum junction Temperature 150 oC Power Dissipation (No heat sink; No air flow) o o TA=25 C, TJ=125 C PD TST SOT-223 PowerDITM5 Storage Temperature DS30715 Rev. 2 - 2 mW 650 TBD -65 to +150 4 of 9 www.diodes.com oC AP1117 (c) Diodes Incorporated AP1117 1A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR Electrical Characteristics (Under Operating Conditions) PARAMETER CONDITIONS MIN TYP MAX UNIT 1.225 1.250 1.275 V 1.470 1.500 1.530 V 1.764 1.800 1.836 V 1.862 1.900 1.938 V 2.450 2.500 2.550 V 3.235 3.300 3.365 V 4.900 5.000 5.100 V 0.2 % 1 % 12 15 mV 15 18 mV 16 19 mV 20 25 mV 26 33 mV 40 50 mV 1.3 1.4 V o Reference Voltage AP1117-ADJ AP1117-1.5 AP1117-1.8 AP1117-1.9 Output Voltage AP1117-2.5 AP1117-3.3 AP1117-5.0 Line Regulation AP1117-XXX AP1117-ADJ AP1117-1.5 AP1117-1.8 Load Regulation AP1117-1.9 AP1117-2.5 AP1117-3.3 AP1117-5.0 Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Thermal Regulation Ripple Rejection Temperature Stability JA Thermal Resistance Junction-to-Ambient(No heat sink; No air flow) JC Thermal Resistance Junction-to-Case Notes: 2. TJ = 25 C, (VIN-OUT) =1.5V IO=10mA o IOUT = 10mA, TJ = 25 C, 3VVIN12V o IOUT = 10mA, TJ = 25 C, 3.3VVIN12V o IOUT = 10mA, TJ = 25 C, 3.3VVIN12V o IOUT = 10mA, TJ = 25 C, 4VVIN12V o IOUT = 10mA, TJ = 25 C, 4.8VVIN12V o IOUT = 10mA, TJ = 25 C, 6.5VVIN12V VOUT+1.5V