Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 General Description Features The AZ2940 is a low dropout three-terminal regulator with a typical dropout of 280mV at 1A output current. · · 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 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. Applications · · · · · · · TO-220-3 LCD TV Set Top Box LCD Monitor SMPS Post Regulator Laptop, Palmtop and Notebook Portable Instrumentation USB Power Supply TO-263-3 TO-252-2 Figure 1. Package Types of AZ2940 BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 1 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Pin Configuration S Package (TO-263-3) T Package (TO-220-3) D Package (TO-252-2) 3 VOUT 3 VOUT 3 VOUT 2 GND 2 GND 2 GND 1 VIN 1 VIN 1 VIN Figure 2. Pin Configuration of AZ2940 (Top View) Pin Description Pin Number Pin Name Function 1 VIN Unregulated Input. 2 GND Ground pin. This pin and TAB are internally connected. 3 VOUT Regulated Output. BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 2 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Functional Block Diagram VIN 1 VOUT 2 GND 16V 1.24V Reference 3 + - Thermal Shutdown Figure 3. Functional Block Diagram of AZ2940 BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 3 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Ordering Information - AZ2940 E1: Lead Free Blank: Tin Lead Circuit Type TR: Tape and Reel Blank: Tube Package T: TO-220-3 S: TO-263-3 D: TO-252-2 Package Temperature Range TO-220-3 -40 to 125oC TO-263-3 TO-252-2 -40 to 125oC -40 to 125oC 2.5: Fixed Output 2.5V 3.3: Fixed Output 3.3V 5.0: Fixed Output 5.0V Part Number Marking ID Tin Lead Lead Free Packing Type Tin Lead Lead Free AZ2940T-2.5 AZ2940T-2.5E1 AZ2940T-2.5 AZ2940T-2.5E1 Tube AZ2940T-3.3 AZ2940T-3.3E1 AZ2940T-3.3 AZ2940T-3.3E1 Tube AZ2940T-5.0 AZ2940T-5.0E1 AZ2940T-5.0 AZ2940T-5.0E1 Tube AZ2940S-2.5 AZ2940S-2.5E1 AZ2940S-2.5 AZ2940S-2.5E1 Tube AZ2940S-2.5TR AZ2940S-2.5TRE1 AZ2940S-2.5 AZ2940S-2.5E1 Tape & Reel AZ2940S-3.3 AZ2940S-3.3E1 AZ2940S-3.3 AZ2940S-3.3E1 Tube AZ2940S-3.3TR AZ2940S-3.3TRE1 AZ2940S-3.3 AZ2940S-3.3E1 Tape & Reel AZ2940S-5.0 AZ2940S-5.0E1 AZ2940S-5.0 AZ2940S-5.0E1 Tube AZ2940S-5.0TR AZ2940S-5.0TRE1 AZ2940S-5.0 AZ2940S-5.0E1 Tape & Reel AZ2940D-2.5 AZ2940D-2.5E1 AZ2940D-2.5 AZ2940D-2.5E1 Tube AZ2940D-2.5TR AZ2940D-2.5TRE1 AZ2940D-2.5 AZ2940D-2.5E1 Tape & Reel AZ2940D-3.3 AZ2940D-3.3E1 AZ2940D-3.3 AZ2940D-3.3E1 Tube AZ2940D-3.3TR AZ2940D-3.3TRE1 AZ2940D-3.3 AZ2940D-3.3E1 Tape & Reel AZ2940D-5.0 AZ2940D-5.0E1 AZ2940D-5.0 AZ2940D-5.0E1 Tube AZ2940D-5.0TR AZ2940D-5.0TRE1 AZ2940D-5.0 AZ2940D-5.0E1 Tape & Reel BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 4 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Absolute Maximum Ratings (Note 1) Parameter Supply Voltage Symbol Value Unit VIN 16 V TJ 150 oC TSTG -65 to 150 TLEAD 300 oC 300 V Maximum Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) ESD (Machine Model) o C 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 Min VIN TJ -40 Max Unit 13.2 V 125 o C BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 5 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Electrical Characteristics AZ2940-2.5V Electrical Characteristics Operating Conditions: VIN=3.5V, IOUT=10mA, CIN=10µF, COUT=10µF, TJ=25oC, unless otherwise specified. The Boldface applies over -40oC≤TJ≤125oC. Parameter Symbol Output Voltage VOUT Min Typ Max Unit IOUT=10mA 2.475 2.5 2.525 V 10mA≤IOUT≤1A, 3.5V≤VIN≤13.2V 2.45 2.5 2.55 V Condition Line Regulation VRLINE IOUT=10mA, 3.5V≤VIN≤13.2V 5.0 25 mV Load Regulation VRLOAD VIN=3.5V, 10mA≤IOUT≤1A 7.5 37.5 mV 50 250 µV/oC IOUT=100mA 70 200 mV IOUT=1A 280 550 mV IOUT=750mA 12 25 mA IOUT=1A 18 mA 2.2 A Output Voltage Temperature Coefficient ∆VOUT/∆T IOUT=10mA Dropout Voltage (Note 2) VDROP ∆VOUT=1% Ground Current IGND Current Limit Minimum Load Current ILIMIT VIN=3.5V VOUT=0V (Note 3) 1.5 ILOAD (MIN) Output Noise Voltage (rms) 1 10Hz to 100KHz, IOUT=100mA, COUT=10µF 400 5 mA µV 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. BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 6 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Electrical Characteristics (Continued) AZ2940-3.3V Electrical Characteristics Operating Conditions: VIN=4.3V, IOUT=10mA, CIN=10µF, COUT=10µF, TJ=25oC, unless otherwise specified. The Boldface applies over -40oC≤TJ≤125oC. Parameter Symbol Output Voltage VOUT Condition Min Typ Max Unit IOUT=10mA 3.27 3.3 3.33 V 10mA≤IOUT≤1A, 4.3V≤VIN≤13.2V 3.23 3.3 3.37 V Line Regulation VRLINE IOUT=10mA, 4.3V≤VIN≤13.2V 6.6 33 mV Load Regulation VRLOAD VIN=4.3V, 10mA≤IOUT≤1A 9.9 50 mV 66 330 µV/oC IOUT=100mA 70 200 mV IOUT=1A 280 550 mV IOUT=750mA 12 25 mA IOUT=1A 18 mA 2.2 A Output Voltage Temperature Coefficient ∆VOUT/∆T IOUT=10mA Dropout Voltage (Note 2) VDROP ∆VOUT=1% Ground Current IGND Current Limit Minimum Load Current ILIMIT VIN=4.3V VOUT=0V (Note 3) 1.5 ILOAD (MIN) Output Noise Voltage (rms) 1 10Hz to 100KHz, IOUT=100mA, COUT=10µF 400 5 mA µV 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. BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 7 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Electrical Characteristics (Continued) AZ2940-5.0V Electrical Characteristics Operating Conditions: VIN=6V, IOUT=10mA, CIN=10µF, COUT=10µF, TJ=25oC, unless otherwise specified. The Boldface applies over -40oC≤TJ≤125oC. Parameter Symbol Output Voltage VOUT Condition Min Typ Max Unit IOUT=10mA 4.95 5.0 5.05 V 10mA≤IOUT≤1A, 6V≤VIN≤13.2V 4.90 5.0 5.10 V Line Regulation VRLINE IOUT=10mA, 6V≤VIN≤13.2V 10 50 mV Load Regulation VRLOAD VIN=6V, 10mA≤IOUT≤1A 15 75 mV IOUT=10mA 100 500 µV/oC IOUT=100mA 70 200 mV IOUT=1A 280 550 mV IOUT=750mA 12 25 mA IOUT=1A 18 mA 2.2 A Output Voltage Temperature Coefficient ∆VOUT/∆T Dropout Voltage (Note 2) VDROP Ground Current IGND Current Limit Minimum Load Current ILIMIT ∆VOUT=1% VIN=6V VOUT=0V (Note 3) 1.5 ILOAD (MIN) Output Noise Voltage (rms) 1 10Hz to 100KHz, IOUT=100mA, COUT=10µF 400 5 mA µV 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. BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 8 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 5.020 5.0250 5.018 5.0225 5.016 5.0200 5.014 5.0175 Output Voltage (V) Output Voltage (V) Typical Performance Characteristics 5.012 5.010 AZ2940-5.0V 5.008 AZ2940-5.0V 5.0150 5.0125 5.0100 5.006 VIN=6V 5.0075 5.004 IOUT=10mA 5.0050 VIN=6V 5.0025 5.002 5.0000 5.000 6 7 8 9 10 11 12 13 14 15 0 16 250 500 Figure 4. Line Regulation 1000 1250 1500 Figure 5. Load Regulation 20 25.0 22.5 VIN=6V 20.0 17.5 Ground Current (mA) Ground Current (mA) 750 Output Current (mA) Supply Voltage (V) 15.0 12.5 10.0 AZ2940-5.0V 7.5 18 IOUT=100mA 16 IOUT=1A 14 12 10 8 6 5.0 4 2.5 2 0 0.0 0 250 500 750 1000 1250 0 1500 2 4 6 8 10 12 14 16 Input Voltage (V) Output Current (mA) Figure 7. Ground Current vs. Input Voltage Figure 6. Ground Current vs. Output Current BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 9 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 500 0.37 450 0.36 400 0.35 Ground Current (mA) Dropout Voltage (mV) Typical Performance Characteristics (Continued) 350 300 250 200 AZ2940-5.0V 150 VIN=6V IOUT=10mA 0.34 0.33 AZ2940-5.0V 0.32 0.31 0.30 100 0.29 50 0.28 0.27 0 0 250 500 750 1000 1250 -25 1500 0 25 50 75 100 125 o Temperature ( C) Output Current (mA) Figure 9. Ground Current vs. Temperature Figure 8. Dropout Voltage vs. Output Current 10.0 3.50 9.5 3.25 VIN=6V Ground Current (mA) Ground Current (mA) 3.00 VIN=6V 9.0 IOUT=500mA 2.75 AZ2940-5.0V 2.50 2.25 2.00 IOUT=1A 8.5 8.0 AZ2940-5.0V 7.5 7.0 6.5 6.0 1.75 5.5 5.0 1.50 -25 0 25 50 75 100 -25 125 0 25 50 75 100 125 o o Temperature ( C) Temperature ( C) Figure 10. Ground Current vs. Temperature Figure 11. Ground Current vs. Temperature BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 10 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 500 500 475 475 450 450 425 425 Dropout Voltage (mV) Dropout Voltage (mV) Typical Performance Characteristics (Continued) 400 375 350 325 300 AZ2940-5.0V 275 250 400 375 350 AZ2940-5.0V 325 300 275 IOUT=1A 250 IOUT=750mA 225 225 200 200 -25 0 25 50 75 100 125 -25 0 o 25 50 75 125 Temperature ( C) Figure 12. Dropout Voltage vs. Temperature Figure 13. Dropout Voltage vs. Temperature 100 5.05 COUT=2.2µF Equivalent Series Resistance (Ω) 5.04 5.03 AZ2940-5.0V 5.02 Output Voltage (V) 100 o Temperature ( C) 5.01 5.00 4.99 4.98 VIN=6V 4.97 IOUT=10mA VOUT=5V 10 O TA=25 C Stable Range 1 0.1 4.96 Unstable Range 4.95 -25 0 25 50 75 100 0.01 125 0 20 40 60 80 100 o Temperature ( C) Output Current (mA) Figure 14. Output Voltage vs. Temperature Figure 15. Output Capacitor ESR BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 11 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Typical Performance Characteristics (Continued) 100 Output Voltage VOUT=5V 10 O TA=25 C Stable Range AZ2940-5.0V CL=10µF 1 Output Current Equivalent Series Resistance (Ω) COUT=10µF 0.1 Unstable Range 0.01 0 200 400 600 800 1000 Output Current (mA) Figure 16. Output Capacitor ESR Figure 17. Load Transient Output Voltage AZ2940-5.0V IOUT=10mA Input Voltage Output Current Output Voltage AZ2940-5.0V CL=47µF Figure 18. Load Transient Figure 19. Line Transient BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 12 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Typical Performance Characteristics (Continued) 50 50 Package:TO-220-3 2 45*43mm Heatsink No Heatsink Power Dissipation (W) 40 Package:TO-252-2 2 45*43mm Heatsink No Heatsink 45 40 Power Dissipation (W) 45 35 30 25 20 15 35 30 25 20 15 10 10 5 5 0 0 -25 0 25 50 75 100 -25 125 o 0 25 50 75 100 125 o Case Temperature ( C) Case Temperature ( C) Figure 20. Power Dissipation vs. Case Temperature Figure 21. Power Dissipation vs. Case Temperature 50 Package:TO-263-3 2 45*43mm Heatsink No Heatsink 45 Power Dissipation (W) 40 35 30 25 20 15 10 5 0 -25 0 25 50 75 100 125 o Case Temperature ( C) Figure 22. Power Dissipation vs. Case Temperature BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 13 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Typical Application 1 VIN VIN V OUT 3 VOUT AZ2940 + + CIN GND COUT 2 Figure 23. Typical Application of AZ2940 Note: CIN is required if regulator is located far from power supply filter and is recommended to be 0.47µF or greater. To maintain stability, COUT is recommended to be 2.2µF or greater. The ESR of this capacitor is critical, please see curve. BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 14 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Mechanical Dimensions TO-220-3 2.580(0.102) 3.380(0.133) 0.550(0.022) 1.350(0.053) 1.160(0.046) 1.760(0.069) 14.230(0.560) 16.510(0.650) φ1.500(0.059) 27.880(1.098) 30.280(1.192) 8.520(0.335) 9.520(0.375) 1.850(0.073) 9.660(0.380) 10.660(0.420) φ3.560(0.140) 4.060(0.160) Unit: mm(inch) 3° 0.200(0.008) 7° 3.560(0.140) 4.820(0.190) 2.080(0.082) 2.880(0.113) 7° 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) BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 15 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Mechanical Dimensions (Continued) TO-263-3 4.070(0.160) 4.820(0.190) Unit: mm(inch) 3° 9.650(0.380) 10.290(0.405) 8.840(0.348) 7.420(0.292) 1.150(0.045) 1.390(0.055) 1.270(0.050) 1.390(0.055) 70° 14.760(0.581) 15.740(0.620) 1.150(0.045) 1.390(0.055) 3° 0.510(0.020) 0.990(0.039) 2.540(0.100) 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) 0.020(0.001) 0.250(0.010) 2.390(0.094) 2.690(0.106) 8.640(0.340) 9.650(0.380) 7° 7.980(0.314) 2° 8° 0.380(0.015) 2.540(0.100) 2.540(0.100) 0° 6° 2.540(0.100) BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 16 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Mechanical Dimensions (Continued) TO-252-2 2.180(0.086) 2.380(0.094) 0.460(0.018) 0.580(0.023) 1.080(0.043) 1.320(0.052) 2.240(0.088) 2.340(0.092) 2.90° 3.10° 5° 0.600(0.024) 1.400(0.055) 1.760(0.069) 0.640(0.025) 0.780(0.031) 8° 5.360(0.211) 5.560(0.219) 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) 2.240(0.088) 2.340(0.092) 0.400(0.016)×45° 1° 7° 0.510(0.020) 2.600(0.102) 3.000(0.118) 9.500(0.374) 10.100(0.398) 0.650(0.026) 0.950(0.037) 5.230(0.206) 5.430(0.214) 6.380(0.251) 6.680(0.263) Unit: mm(inch) 2.90° 3.10° BCD Semiconductor Manufacturing Limited Sep. 2005 Rev. 1. 4 17 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 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 - 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. 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