AP1122 1A LOW DROPOUT POSITIVE REGULATOR General Description Features • • • • • • • • • AP1122 is a low dropout positive fixed-mode regulator with 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 1.2V logic supply. AP1122 is also well suited for other applications such as VGA cards. AP1122 is guaranteed to have lower than 1.3V dropout at full load current making it ideal to provide well-regulated outputs of 1.2 output voltage with 2.5V input voltage supply. 1.3V maximum dropout at full load current Fixed 1.2V±2% output voltage Fast transient response Output current limiting Built-in thermal shutdown Good noise rejection Packages: SOT223-3L, TO252-3L, SOT89-3L SOT223-3L and TO252-3L: Available in “Green” Molding Compound (No Br, Sb) (Note 1) Lead Free Finish/RoHS Compliant (Note 2) Applications • • PC peripheral Communication Ordering Information AP1122XXX Package E : SOT223-3L D : TO252-3L Y : SOT89-3L Note: Packing Lead Free -U : Tube L : Lead Free G : Green (Note 1) -13 : Taping 1. Green is only for SOT223-3L and TO252-3L. 2. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7. Device (Note 3) AP1122E AP1122D AP1122Y Tube/Bulk Package Packaging Quantity Part Number Code (Note 3) Suffix E D Y SOT223-3L TO252-3L SOT89-3L 75 80 NA -U -U NA 13” Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel 2500/Tape & Reel 2500/Tape & Reel -13 -13 -13 Lead-free Note: 3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at http://www.diodes.com/datasheets/ap02001.pdf. AP1122 Rev. 2 1 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR Pin Assignment (1) SOT223-3L (2) TO252-3L ( Top View ) ( Top View ) 3 3 Vin 2 Vout 2 1 GND 1 Vin Vout GND Tab is Vout Tab is Vout (3) SOT89-3L 3 Vin 2 Vout 1 GND Tab is Vout Typical Application Circuit 2.5V C1 100uF Vin Vout GND 1.2V/1A C2 100uF Tab is Vout AP1122 Rev. 2 2 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR Block Diagram Vin 3 2 Vout 1 GND + + 1.2V + CURRENT LIMIT + Thermal Shutdown Pin Descriptions NAME GND I/O I PIN # 1 Vout O 2 Vin I 3 FUNCTION Ground Pin The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ ESR ≤ 20Ω) must be connected from this pin to ground to insure stability. The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR ≤ 20Ω) 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. Absolute Maximum Ratings Symbol Vin TST TOP TM AP1122 Rev. 2 Parameter DC Supply Voltage Storage Temperature Operating Junction Temperature Range Maximum Junction Temperature 3 of 9 www.diodes.com Rating -0.3 to 12 -65 to +150 0 to +125 150 Unit V o C o C oC FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR Electrical Characteristics PARAMETER Output Voltage Line Regulation Load Regulation Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current (Note 6) Thermal Regulation Ripple Rejection Temperature Stability θ JA Thermal Resistance Junction-to-Ambient θ JC Thermal Resistance Junction-to-Case Note: (Under Operating Conditions) CONDITIONS 2.5V≦VIN≦12V, TA=25oC IO=10mA, 2.5V<VIN<12V, TA=25oC VIN=2.5V~12V,Vadj=0,0mA<Io<1A, TA=25oC (Note 4,5) MIN 1.176 1.3 IOUT = 1A ,∆VOUT=0.1%VOUT (VIN-VOUT) = 5V TYP 1.2 MAX 1.224 0.2 UNIT V % 1 % 1.4 V 1. 1 0oC≦Tj≦125oC o TA=25 C, 30ms pulse F=120Hz,COUT=25uF Tantalum, IOUT=1A, VIN=VOUT+3V IO=10mA SOT89-3L : Control Circuitry/Power Transistor (Note 7) SOT223-3L : Control Circuitry/Power Transistor (Note 8) TO252-3L : Control Circuitry/Power Transistor (Note 9) SOT89-3L : Control Circuitry/Power Transistor (Note 7) SOT223-3L : Control Circuitry/Power Transistor (Note 8) TO252-3L : Control Circuitry/Power Transistor (Note 9) A 5 10 mA 0.008 0.04 %/W 60 70 dB 0.5 182 107 73 42 12 16 % o C/W o C/W 4. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead = 1/18” from the package. 5. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the difference between input and output differential and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. 6. Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA. 7. Test condition for SOT89-3L: no air flow, no heat sink. 8. Test condition for SOT223-3L: TA = 27°C, no air flow, device mounted on 2”X2” polyimide PCB, 2 oz copper, 5.6mmX5.6mm pad. 9. Test condition for TO252-3L: TA = 27°C, no air flow, device mounted on 2”X2” polyimide PCB, 1 oz copper, 2cmX2cm pad. AP1122 Rev. 2 4 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR Typical Performance Characteristics 0.20 2. 0 Output Voltage Deviation (%) 1. 8 1. 6 Dropout Voltage (V) 1. 4 1. 2 0 I load=800mA -0.20 Tj = 25 oC 1. 0 -0.40 0. 8 Tj = 125 oC 0. 6 -0.80 0. 4 0. 2 0 0 250 500 Output Current (mA) 750 -1 1000 -25 Dropout Voltage vs Output Current 0 25 50 Temperature (oC) 75 100 125 Load Regulation vs Temperature 2 1 0.8 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 Temperature (oC) 75 100 125 150 Output Voltage Deviation (%) Output Voltage Change (%) 1.5 0.6 0.4 0.2 0 2 4 7.5 Cin=1uF Cout=10uF Tantalum 6.5 5.5 40 20 0 -20 -40 0 20 40 60 80 100 120 140 160 180 200 TIME (us) 30 10 12 C in = 1uF C out = 10 uF Tantalum Preload = 100mA 20 10 0 -10 -20 2 1 0 -1 Line Transient Response AP1122 Rev. 2 8 Line Regulation Load Current (A) Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage (V) Percent Change in Output Voltage vs Temperature 6 Input Voltage (V) 0 10 20 30 40 50 TIME (us) 60 70 80 90 100 Load Transient Response 5 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR Marking Information (1) SOT223-3L (2) TO252-3L (Top view) (Top view) Internal Code XXX Logo Logo 1122 X 1122X XXXX X Blank: Lead Free G: Green Internal Code Xth Week: 01~52 Year: "01" = 2001 "02" = 2002 ~ Month: A~L = 01~12 Year: "1" = 2001 "2" = 2002 Blank: Lead Free G: Green (3) SOT89-3L XX XX Date Code Month: A~L Year: 0~9 1 2 Identification Code 3 Identification code Output version JB AP1122 AP1122 Rev. 2 6 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR Package Information (1) SOT223-3L 6.30/6.70 Nom 6.50 2.90 3.15 Ref. 6.4 6.70/7.30 Nom 7.00 1.6 3.3 1.6 3.30/3.70 Nom 3.50 1.50/2.00 Nom 2.00 1.2 2.3 Basic 4.6 Basic Land Pattern Recommendation (Unit: mm) 13° AP1122 Rev. 2 0.60/0.70 Nom 0.80 0°/10° Nom 5° 7 of 9 www.diodes.com 1.50/ 1.80 Nom 1.65 0.02/0.08 Nom 0.05 13° 2.3 0.91/1.10 Nom 1.00 0.28/0.32 Seating Plane Nom 0.30 FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR Package Information (Continued) 0.88/1.27 (2) TO252-3L 6.354/6.80 Typ 6.58 7.2 11.0 5.40/6.20 Typ 5.57 5.6 5.20/5.50 Typ 5.35 5.6 2.0 2.25 1.2 Land Pattern Recommendation (Unit: mm) 0.64/1.02 Typ 0.83 0.89/ 1.14 0.45/0.58 Typ 0.52 Note: 2.18/2.40 Typ 2.29 9.00/10.40 Typ 9.70 0.51 SEE NOTE2 2.28 BSC. 4.57 BSC. 0.61 Typ SEATING PLANE 0.45/0.58 Typ 0.52 10. JEDEC Outline: TO-252 AB Mils suggested for positive contact at mounting. (3) SOT89-3L 1.40/1.75 Typ 1.60 2.7 3.94/4.25 1.45/1.55 Typ 1.50 1.3 1.9 0.4 0.80/ 1.20 2.35/2.60 Typ 2.48 1.7 1.5 0.9 Land Pattern Recommendation (Unit: mm) 2.90/3.10 Typ 3.00 50 (2x) 80 (2x) 1.40/1.60 Typ 1.50 4.40/4.60 Typ 4.50 0.36/0.48 0.41/0.53 0.36/0.48 Typ 0.42 Typ 0.47 Typ 0.42 AP1122 Rev. 2 0.35/0.43 Typ 0.39 8 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated AP1122 1A LOW DROPOUT POSITIVE REGULATOR IMPORTANT NOTICE Diodes Incorporated and its subsidiaries reserve the right to make modifications, enhancements, improvements, corrections or other changes without further notice to any product herein. Diodes Incorporated does not assume any liability arising out of the application or use of any product described herein; neither does it convey any license under its patent rights, nor the rights of others. The user of products in such applications shall assume all risks of such use and will agree to hold Diodes Incorporated and all the companies whose products are represented on our website, harmless against all damages. LIFE SUPPORT Diodes Incorporated products are not authorized for use as critical components in life support devices or systems without the expressed written approval of the President of Diodes Incorporated. AP1122 Rev. 2 9 of 9 www.diodes.com FEBRUARY 2007 © Diodes Incorporated