AP1121 DUAL 1A LOW DROPOUT POSITIVE REGULATOR General Description Features * * * * * * * 1.3V maximum dropout at full load current Fast transient response Output current limiting for each channel Built-in thermal shutdown for each channel Good noise rejection Dual output ch1 = 3.3V, ch2 = 2.5V (ch2 = 1.8V for version B) SOP-8L: Available in "Green" Molding Compound (No Br, Sb) Lead Free Finish/ RoHS Compliant (Note 1) AP1121 is a low dropout positive regulator which provides 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/2.5V or 3.3V/1.8V logic supply. AP1121 is guaranteed to have <1.3V dropout at full load current making it ideal to provide well regulated outputs dual channels with up to 18V input supply. Applications * * PC peripheral Communication Ordering Information AP 1121 X S X - 13 Vout Package Lead Free A : CH1=3.3V CH2=2.5V B : CH1=3.3V CH2=1.8V S : SOP-8L L : Lead Free G : Green Device Lead-free AP1121XSL-13 AP1121XSG-13 Notes: Package Code S S Packaging (Note 2) SOP-8L SOP-8L Packing 13 : Tape & Reel 13" Tape and Reel Quantity Part Number Suffix 2500/Tape & Reel -13 2500/Tape & Reel -13 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at http://www.diodes.com/products/lead_free.html. 2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be on found our website at http://www.diodes.com/datasheets/ap02001.pdf. AP1121 Rev. 5 1 of 7 www.diodes.com FEBRUARY 2009 (c) Diodes Incorporated AP1121 DUAL 1A LOW DROPOUT POSITIVE REGULATOR Pin Assignments ( Top View ) VOUT1 1 8 GND VIN1 2 7 GND 6 GND 5 GND VIN2 3 AP1121 VOUT2 4 SOP-8L Pin Descriptions Pin Name GND 3.3V(VOUT1) 2.5V/1.8V (VOUT2) VIN AP1121 Rev. 5 Descriptions Ground 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. The input pin of regulator. Typically a large storage capacitor (0.15 ESR 20) is connected from this pin to ground. 2 of 7 www.diodes.com FEBRUARY 2009 (c) Diodes Incorporated AP1121 DUAL 1A LOW DROPOUT POSITIVE REGULATOR Block Diagram 2 1 VIN1 VOUT1 - + + 1.25V + CURRENT LIMIT + Thermal Shutdown - 5/6 GND 4 3 VOUT2 VIN2 - + + 1.25V + CURRENT LIMIT + Thermal Shutdown - 7/8 GND Typical Application Circuit 3.3V/1A C1 100uF V OUT1 GND VIN1 GND 5V C2 100uF 2.5V/1A C3 100uF VIN2 GND V OUT2 GND (3.3V/2.5V Dual output ) AP1121 Rev. 5 3 of 7 www.diodes.com FEBRUARY 2009 (c) Diodes Incorporated AP1121 DUAL 1A LOW DROPOUT POSITIVE REGULATOR Absolute Maximum Ratings Symbol VIN TST Parameter DC Supply Voltage TOP Operating Junction Temperature Range TM Maximum Junction Temperature Parameter Output Voltage Line Regulation Load Regulation Dropout Voltage (VIN-VOUT) Current Limit Minimum Load Current Thermal Regulation Ripple Rejection Temperature Stability V -65 to +150 o 0 to +125 o C C oC 150 (Under Operating Conditions) Conditions IOUT = 10mA, TA = 25oC, AP1121_ - VOUT1 4.8VVIN12V IOUT = 10mA, TA = 25oC, AP1121A - VOUT2 4VVIN12V IOUT = 10mA, TA = 25oC, AP1121B - VOUT2 4VVIN12V IO = 10mA, VOUT +1.5V<VIN<12V, TA = 25oC AP1121 series VIN = 5V, 0IOUT 1A, VOUT1 TA = 25oC (Note 3, 4) AP1121 series VIN = 4V, 0mA<Io<1A, VOUT2 TA = 25oC (Note 4, 5) Min Typ. Max Unit 3.235 3.300 3.365 V 2.450 2.500 2.550 V 1.764 1.800 1.836 V 0.2 % 26 33 mV 20 25 mV 1.3 1.4 V 5 0.008 60 0.5 10 0.04 70 A mA %/W dB % IOUT = 1A, VOUT = 0.1%VOUT (VIN-VOUT) = 5V 0oCTj125oC (Note 5) TA = 25 oC, 30ms pulse F = 120Hz, COUT = 25uF Tantalum, IOUT = 1A IO = 10mA Control Circuitry/Power Transistor JA Thermal Resistance SOP-8L: (Note 6) Junction-to-Ambient (No CH1 or CH2 only heat sink; No air flow) CH1 & CH2 and PD1 = PD2 SOP-8L: Control Circuitry/Power Transistor JC Thermal Resistance (Note 6) CH1 or CH2 only Junction-to-Case CH1 & CH2 and PD1 = PD2 Notes: Unit -0.3 to 18 V Storage Temperature Electrical Characteristics Rating 1. 1 177 158 O 29 19 O C/W C/W 3. 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. 4. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the input/output differentially and the output current. Guaranteed maximum power dissipation will not be available over the full input/output range. 5. Quiescent current is defined as the minimum output current that requires maintaining regulation. At 12V input/output differential the device is guaranteed to regulate if the output current is greater than 10mA. 6. Vout1 and Vout2 are connected to the PCB copper area 5.5mm*5.5mm separately. If you need large PD or lower Tc & Tj, please connect to the large copper area >> 5.5mm*5.5mm (like 10mm*10mm). AP1121 Rev. 5 4 of 7 www.diodes.com FEBRUARY 2009 (c) Diodes Incorporated AP1121 DUAL 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 0 250 750 500 -1 1000 Output Current (mA) -25 Dropout Voltage vs Output Current 0 25 50 Temperature (oC) 75 100 125 Load Regulation vs Temperature 2 1 Output Voltage Deviation (%) Output Voltage Change (%) 1.5 1 0. 5 0 -0.5 -1 -1.5 -2 -50 -25 0 25 50 Temperature (oC) 75 100 125 0.8 0.6 0.4 0.2 0 150 2 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) 10 12 Line Regulation 30 C in = 1uF C out = 10 uF Tantalum Preload = 100mA 20 10 0 -10 -20 2 1 0 -1 Line Transient Response AP1121 Rev. 5 8 Input Voltage (V) Load Current (A) Output Voltage Deviation (mV) Output Voltage Deviation (mV) Input Voltage (V) 7.5 6 4 Percent Change in Output Voltage vs Temperature 0 10 20 30 40 50 60 70 80 90 100 TIME (us) Load Transient Response 5 of 7 www.diodes.com FEBRUARY 2009 (c) Diodes Incorporated AP1121 DUAL 1A LOW DROPOUT POSITIVE REGULATOR Marking Information (1) SOP-8L ( Top View ) 5 8 A : 3.3V/2.5V version B : 3.3V/1.8V version YY : Year : 08, 09,10~ WW : Week : 01~52; 52 represents 52 and 53 week X : Internal Code L : Lead Free G : Green Logo 1 4 0.10/0.20 AP1121 X YY WW X X Part Number 0.62/0.82 Package Information 0.254 3.85/3.95 5.90/6.10 (1) Package type: SOP-8L Gauge Plane Seating Plane Detail "A" 7~9 0.15/0.25 1.30/1.50 1.75max. 0.35max. 45 7~9 Detail "A" 0/8 0.3/0.5 1.27typ 4.85/4.95 5.4 8x-0.60 8x-1.55 6x-1.27 Land Pattern Recommendation (Unit: mm) AP1121 Rev. 5 6 of 7 www.diodes.com FEBRUARY 2009 (c) Diodes Incorporated AP1121 DUAL 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. AP1121 Rev. 5 7 of 7 www.diodes.com FEBRUARY 2009 (c) Diodes Incorporated