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| Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR General Description The AZ2940 is a low dropout three-terminal regulator with a typical dropout of 280mV at 1A output current. The AZ2940 provides current limit and thermal shutdown. On-chip thermal shutdown provides protection against any combination of high current and ambient temperature that would create excessive junction temperatures. The AZ2940 has 2.5V, 3.3V and 5.0V versions. The AZ2940 is available in the industry standard TO220-3, TO-263-3 and TO-252-2 power packages. AZ2940 Features * * * * * * * Minimum Guaranteed Output Current: 1A Dropout Voltage at IOUT=1A: 280mV Output Accuracy: 1% Low Ground Current Internal Current Limit and Thermal Protection Reversed-battery and Reversed-lead Insertion Protection Fast Transient Response Applications * * * * * * * LCD TV Set Top Box LCD Monitor SMPS Post Regulator Laptop, Palmtop and Notebook Portable Instrumentation USB Power Supply TO-220-3 TO-263-3 TO-252-2 Figure 1. Package Types of AZ2940 Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 1 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Pin Configuration AZ2940 T Package (TO-220-3) S Package (TO-263-3) D Package (TO-252-2) 3 2 1 VOUT GND VIN 3 2 1 VOUT GND VIN 3 2 1 VOUT GND VIN Figure 2. Pin Configuration of AZ2940 (Top View) Pin Description Pin Number 1 2 3 Pin Name VIN GND VOUT Unregulated Input. Function Ground pin. This pin and TAB are internally connected. Regulated Output. Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 2 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Functional Block Diagram AZ2940 VIN 1 3 VOUT 1.24V Reference + - 16V Thermal Shutdown 2 GND Figure 3. Functional Block Diagram of AZ2940 Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 3 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Ordering Information AZ2940 AZ2940 Circuit Type E1: Lead Free Blank: Tin Lead TR: Tape and Reel Blank: Tube 2.5: Fixed Output 2.5V 3.3: Fixed Output 3.3V 5.0: Fixed Output 5.0V Package T: TO-220-3 S: TO-263-3 D: TO-252-2 Package Temperature Range -40 to 125oC Part Number Tin Lead AZ2940T-2.5 AZ2940T-3.3 AZ2940T-5.0 AZ2940S-2.5 AZ2940S-2.5TR AZ2940S-3.3 Lead Free AZ2940T-2.5E1 AZ2940T-3.3E1 AZ2940T-5.0E1 AZ2940S-2.5E1 AZ2940S-2.5TRE1 AZ2940S-3.3E1 AZ2940S-3.3TRE1 AZ2940S-5.0E1 AZ2940S-5.0TRE1 AZ2940D-2.5E1 AZ2940D-2.5TRE1 AZ2940D-3.3E1 AZ2940D-3.3TRE1 AZ2940D-5.0E1 AZ2940D-5.0TRE1 Marking ID Tin Lead AZ2940T-2.5 AZ2940T-3.3 AZ2940T-5.0 AZ2940S-2.5 AZ2940S-2.5 AZ2940S-3.3 AZ2940S-3.3 AZ2940S-5.0 AZ2940S-5.0 AZ2940D-2.5 AZ2940D-2.5 AZ2940D-3.3 AZ2940D-3.3 AZ2940D-5.0 AZ2940D-5.0 Lead Free AZ2940T-2.5E1 AZ2940T-3.3E1 AZ2940T-5.0E1 AZ2940S-2.5E1 AZ2940S-2.5E1 AZ2940S-3.3E1 AZ2940S-3.3E1 AZ2940S-5.0E1 AZ2940S-5.0E1 AZ2940D-2.5E1 AZ2940D-2.5E1 AZ2940D-3.3E1 AZ2940D-3.3E1 AZ2940D-5.0E1 AZ2940D-5.0E1 Packing Type Tube Tube Tube Tube Tape & Reel Tube Tape & Reel Tube Tape & Reel Tube Tape & Reel Tube Tape & Reel Tube Tape & Reel TO-220-3 TO-263-3 -40 to 125oC AZ2940S-3.3TR AZ2940S-5.0 AZ2940S-5.0TR AZ2940D-2.5 AZ2940D-2.5TR TO-252-2 -40 to 125oC AZ2940D-3.3 AZ2940D-3.3TR AZ2940D-5.0 AZ2940D-5.0TR BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 4 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Absolute Maximum Ratings (Note 1) Parameter Supply Voltage Maximum Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) ESD (Machine Model) Symbol VIN TJ TSTG TLEAD Value 16 150 -65 to 150 300 300 Unit V oC o AZ2940 C oC V Note 1: Stresses greater than those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under "Recommended Operating Conditions" is not implied. Exposure to "Absolute Maximum Ratings" for extended periods may affect device reliability. Recommended Operating Conditions Parameter Supply Voltage Operating Junction Temperature Symbol VIN TJ -40 Min Max 13.2 125 Unit V o C Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 5 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Electrical Characteristics AZ2940-2.5V Electrical Characteristics Operating Conditions: VIN=3.5V, IOUT=10mA, CIN=10F, COUT=10F, TJ=25oC, unless otherwise specified. The Boldface applies over -40oCTJ125oC. Parameter Output Voltage Symbol VOUT Condition IOUT=10mA 10mAIOUT1A, 3.5VVIN13.2V Line Regulation Load Regulation Output Voltage Temperature Coefficient Dropout Voltage (Note 2) VRLINE VRLOAD VOUT/T VDROP IOUT=10mA, 3.5VVIN13.2V VIN=3.5V, 10mAIOUT1A IOUT=10mA VOUT=1% IOUT=100mA IOUT=1A Ground Current IGND VIN=3.5V IOUT=750mA IOUT=1A Current Limit Minimum Load Current Output Noise Voltage (rms) ILIMIT ILOAD (MIN) 10Hz to 100KHz, IOUT=100mA, COUT=10F VOUT=0V (Note 3) 1.5 Min 2.475 2.45 Typ 2.5 2.5 5.0 7.5 50 70 280 12 18 2.2 1 400 5 Max 2.525 2.55 25 37.5 250 200 550 25 Unit V V mV mV V/oC mV mV mA mA A mA V AZ2940 Note 2: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value which is measured at VOUT+1V applied to VIN. Note 3: VIN=VOUT(NOMINAL)+1V. Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 6 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Electrical Characteristics (Continued) AZ2940-3.3V Electrical Characteristics Operating Conditions: VIN=4.3V, IOUT=10mA, CIN=10F, COUT=10F, TJ=25oC, unless otherwise specified. The Boldface applies over -40oCTJ125oC. Parameter Output Voltage Symbol VOUT Condition IOUT=10mA 10mAIOUT1A, 4.3VVIN13.2V Line Regulation Load Regulation Output Voltage Temperature Coefficient Dropout Voltage (Note 2) VRLINE VRLOAD VOUT/T VDROP IOUT=10mA, 4.3VVIN13.2V VIN=4.3V, 10mAIOUT1A IOUT=10mA VOUT=1% IOUT=100mA IOUT=1A Ground Current IGND VIN=4.3V IOUT=750mA IOUT=1A Current Limit Minimum Load Current Output Noise Voltage (rms) ILIMIT ILOAD (MIN) 10Hz to 100KHz, IOUT=100mA, COUT=10F VOUT=0V (Note 3) 1.5 Min 3.27 3.23 Typ 3.3 3.3 6.6 9.9 66 70 280 12 18 2.2 1 400 5 Max 3.33 3.37 33 50 330 200 550 25 Unit V V mV mV V/oC mV mV mA mA A mA V AZ2940 Note 2: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value which is measured at VOUT+1V applied to VIN. Note 3: VIN=VOUT(NOMINAL)+1V. Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 7 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Electrical Characteristics (Continued) AZ2940-5.0V Electrical Characteristics Operating Conditions: VIN=6V, IOUT=10mA, CIN=10F, COUT=10F, TJ=25oC, unless otherwise specified. The Boldface applies over -40oCTJ125oC. Parameter Output Voltage Symbol VOUT Condition IOUT=10mA 10mAIOUT1A, 6VVIN13.2V Line Regulation Load Regulation Output Voltage Temperature Coefficient Dropout Voltage (Note 2) VRLINE VRLOAD VOUT/T VDROP IOUT=10mA, 6VVIN13.2V VIN=6V, 10mAIOUT1A IOUT=10mA VOUT=1% IOUT=100mA IOUT=1A Ground Current IGND VIN=6V IOUT=750mA IOUT=1A Current Limit Minimum Load Current Output Noise Voltage (rms) ILIMIT ILOAD (MIN) 10Hz to 100KHz, IOUT=100mA, COUT=10F VOUT=0V (Note 3) 1.5 Min 4.95 4.90 Typ 5.0 5.0 10 15 100 70 280 12 18 2.2 1 400 5 Max 5.05 5.10 50 75 500 200 550 25 Unit V V mV mV V/oC mV mV mA mA A mA V AZ2940 Note 2: Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its nominal value which is measured at VOUT+1V applied to VIN. Note 3: VIN=VOUT(NOMINAL)+1V. Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 8 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics AZ2940 5.020 5.018 5.016 5.0250 5.0225 5.0200 Output Voltage (V) Output Voltage (V) 5.014 5.012 5.010 5.0175 5.0150 5.0125 5.0100 5.0075 5.0050 5.0025 5.0000 AZ2940-5.0V AZ2940-5.0V 5.008 5.006 5.004 5.002 5.000 6 7 8 9 10 11 12 13 14 15 16 VIN=6V IOUT=10mA VIN=6V 0 250 500 750 1000 1250 1500 Supply Voltage (V) Output Current (mA) Figure 4. Line Regulation Figure 5. Load Regulation 25.0 22.5 20.0 20 18 IOUT=100mA IOUT=1A VIN=6V 16 Ground Current (mA) Ground Current (mA) 17.5 15.0 12.5 10.0 7.5 5.0 2.5 0.0 0 250 500 750 1000 1250 1500 14 12 10 8 6 4 2 0 0 2 4 6 8 10 12 14 16 AZ2940-5.0V Output Current (mA) Input Voltage (V) Figure 6. Ground Current vs. Output Current Figure 7. Ground Current vs. Input Voltage Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 9 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AZ2940 500 450 400 0.37 0.36 0.35 VIN=6V IOUT=10mA Ground Current (mA) Dropout Voltage (mV) 350 300 250 200 0.34 0.33 AZ2940-5.0V 0.32 0.31 0.30 0.29 0.28 0.27 AZ2940-5.0V 150 100 50 0 0 250 500 750 1000 1250 1500 -25 0 25 50 o 75 100 125 Output Current (mA) Temperature ( C) Figure 8. Dropout Voltage vs. Output Current Figure 9. Ground Current vs. Temperature 3.50 3.25 3.00 10.0 9.5 VIN=6V IOUT=500mA Ground Current (mA) 9.0 8.5 8.0 7.5 7.0 6.5 6.0 VIN=6V IOUT=1A Ground Current (mA) 2.75 AZ2940-5.0V 2.50 2.25 2.00 1.75 1.50 -25 0 25 50 o AZ2940-5.0V 5.5 5.0 75 100 125 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Figure 10. Ground Current vs. Temperature Figure 11. Ground Current vs. Temperature Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 10 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AZ2940 500 475 450 425 500 475 450 425 Dropout Voltage (mV) 400 375 350 325 300 275 250 225 200 -25 0 25 50 o Dropout Voltage (mV) 400 375 350 325 300 275 250 225 200 AZ2940-5.0V AZ2940-5.0V IOUT=750mA IOUT=1A 75 100 125 -25 0 25 50 o 75 100 125 Temperature ( C) Temperature ( C) Figure 12. Dropout Voltage vs. Temperature Figure 13. Dropout Voltage vs. Temperature 5.05 5.04 100 COUT=2.2F Equivalent Series Resistance () VOUT=5V 10 5.03 AZ2940-5.0V 5.02 TA=25 C O Output Voltage (V) 5.01 5.00 4.99 4.98 4.97 4.96 4.95 -25 0 25 50 o Stable Range 1 VIN=6V IOUT=10mA 0.1 Unstable Range 75 100 125 0.01 0 20 40 60 80 100 Temperature ( C) Output Current (mA) Figure 14. Output Voltage vs. Temperature Figure 15. Output Capacitor ESR Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 11 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AZ2940 100 Equivalent Series Resistance () VOUT=5V 10 TA=25 C Stable Range O 1 0.1 Unstable Range 0.01 0 200 400 600 800 1000 Output Current (mA) Figure 16. Output Capacitor ESR Output Current Output Voltage COUT=10F AZ2940-5.0V CL=10F Figure 17. Load Transient Output Current Output Voltage Figure 18. Load Transient Input Voltage Output Voltage AZ2940-5.0V CL=47F AZ2940-5.0V IOUT=10mA Figure 19. Line Transient Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 12 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Typical Performance Characteristics (Continued) AZ2940 50 45 40 50 Power Dissipation (W) Power Dissipation (W) Package:TO-220-3 2 45*43mm Heatsink No Heatsink 45 40 35 30 25 20 15 10 5 0 Package:TO-252-2 2 45*43mm Heatsink No Heatsink 35 30 25 20 15 10 5 0 -25 0 25 50 75 o 100 125 -25 0 25 50 75 o 100 125 Case Temperature ( C) Case Temperature ( C) Figure 20. Power Dissipation vs. Case Temperature Figure 21. Power Dissipation vs. Case Temperature 50 45 40 Package:TO-263-3 2 45*43mm Heatsink No Heatsink Power Dissipation (W) 35 30 25 20 15 10 5 0 -25 0 25 50 o 75 100 125 Case Temperature ( C) Figure 22. Power Dissipation vs. Case Temperature Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 13 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Typical Application AZ2940 VIN 1 VIN V OUT 3 VOUT + AZ2940 + CIN GND 2 COUT Figure 23. Typical Application of AZ2940 Note: CIN is required if regulator is located far from power supply filter and is recommended to be 0.47F or greater. To maintain stability, COUT is recommended to be 2.2F or greater. The ESR of this capacitor is critical, please see curve. Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 14 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions TO-220-3 Unit: mm(inch) AZ2940 9.660(0.380) 10.660(0.420) 3.560(0.140) 4.060(0.160) 2.580(0.102) 3.380(0.133) 0.550(0.022) 1.350(0.053) 1.850(0.073) 0.200(0.008) 14.230(0.560) 16.510(0.650) 7 1.500(0.059) 8.520(0.335) 9.520(0.375) 27.880(1.098) 30.280(1.192) 3.560(0.140) 4.820(0.190) 2.080(0.082) 2.880(0.113) 7 3 1.160(0.046) 1.760(0.069) 0.381(0.015) 60 0.813(0.032) 8.763(0.345) 60 0.381(0.015) 2.540(0.100) 2.540(0.100) 0.356(0.014) 0.406(0.016) Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 15 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions (Continued) TO-263-3 Unit: mm(inch) AZ2940 4.070(0.160) 4.820(0.190) 3 9.650(0.380) 10.290(0.405) 8.840(0.348) 70 1.270(0.050) 1.390(0.055) 1.150(0.045) 1.390(0.055) 7 7.420(0.292) 8.640(0.340) 9.650(0.380) 0.020(0.001) 0.250(0.010) 14.760(0.581) 15.740(0.620) 2.390(0.094) 2.690(0.106) 1.150(0.045) 1.390(0.055) 0.510(0.020) 0.990(0.039) 2.540(0.100) 2.540(0.100) 3 2.640(0.104) 2.700(0.106) 0.360(0.014) 0.400(0.016) 7 2.200(0.087) 5.600(0.220) 7.980(0.314) 2 8 0.380(0.015) 2.540(0.100) 0 6 2.540(0.100) Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 16 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR Mechanical Dimensions (Continued) TO-252-2 Unit: mm(inch) AZ2940 5.230(0.206) 5.430(0.214) 6.380(0.251) 6.680(0.263) 0.460(0.018) 0.580(0.023) 2.180(0.086) 2.380(0.094) 0.400(0.016) 45 9.500(0.374) 10.100(0.398) 0.650(0.026) 0.950(0.037) 0.480(0.019) 0.540(0.021) 0.020(0.001) 0.120(0.005) 5 0.750(0.030) 0.850(0.033) 1.400(0.055) 1.760(0.069) 5 0.600(0.024) 2.600(0.102) 3.000(0.118) 2.240(0.088) 2.340(0.092) 0.640(0.025) 0.780(0.031) 2.240(0.088) 2.340(0.092) 1 7 0.510(0.020) 2.90 3.10 2.90 3.10 Sep. 2005 Rev. 1. 4 BCD Semiconductor Manufacturing Limited 17 5.360(0.211) 5.560(0.219) 1.080(0.043) 1.320(0.052) 8 http://www.bcdsemi.com IMPORTANT NOTICE BCD Semiconductor Manufacturing Limited reserves the right to make changes without further notice to any products or specifications herein. BCD Semiconductor Manufacturing Limited does not assume any responsibility for use of any its products for any particular purpose, nor does BCD Semiconductor Manufacturing Limited assume any liability arising out of the application or use of any its products or circuits. BCD Semiconductor Manufacturing Limited does not convey any license under its patent rights or other rights nor the rights of others. MAIN SITE BCD Semiconductor Manufacturing Limited - Wafer Fab Shanghai SIM-BCD Semiconductor Manufacturing Limited 800, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6485 1491, Fax: +86-21-5450 0008 BCD Semiconductor Manufacturing Limited - IC Design Group Advanced Analog Circuits (Shanghai) Corporation 8F, Zone B, 900, Yi Shan Road, Shanghai 200233, China Tel: +86-21-6495 9539, Fax: +86-21-6485 9673 REGIONAL SALES OFFICE Shenzhen Office Shanghai SIM-BCD Semiconductor Manufacturing Co., Ltd. Shenzhen Office Advanced Analog Circuits (Shanghai) Corporation Shenzhen Office 27B, Tower C, 2070, Middle Shen Nan Road, Shenzhen 518031, China Tel: +86-755-8368 3987, Fax: +86-755-8368 3166 Taiwan Office BCD Semiconductor (Taiwan) Company Limited 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, Taiwan Tel: +886-2-2656 2808, Fax: +886-2-2656 2806 USA Office BCD Semiconductor Corporation 3170 De La Cruz Blvd., Suite 105, Santa Clara, CA 95054-2411, U.S.A Tel: +1-408-988 6388, Fax: +1-408-988 6386 |
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