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 (1) 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 (1) Figure 1. Package Types of AZ2940 Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 1 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Pin Configuration T Package (TO-220-3) S Package (TO-263-3) D Package (TO-252-2 (1)) 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. Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 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 Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 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 (1) Package Temperature Range TO-220-3 -40 to 125oC TO-263-3 TO-252-2 (1) -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. Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 4 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Absolute Maximum Ratings (Note 1) Parameter Input Voltage Symbol Value Unit VIN 16 V TJ 150 oC TSTG -65 to 150 o TLEAD 260 o Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering, 10sec) θJA Thermal Resistance C C TO-220-3 60 TO-263-3 60 TO-252-2 (1) 100 o C/W ESD (Human Body Model) ESD 5000 V ESD (Machine Model) ESD 300 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 Input Voltage Operating Junction Temperature Symbol Min VIN TJ Mar. 2007 Rev. 1. 6 -40 Max Unit 13.2 V 125 o C BCD Semiconductor Manufacturing Limited 5 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Electrical Characteristics AZ2940-2.5 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 Condition 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 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 Short Circuit Current Minimum Load Current ISC 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. Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 6 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Electrical Characteristics (Continued) AZ2940-3.3 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 Short Circuit Current Minimum Load Current ISC 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. Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 7 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Electrical Characteristics (Continued) AZ2940-5.0 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 Short Circuit Current Minimum Load Current ISC ∆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. Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 8 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Typical Performance Characteristics 5.020 5.0250 5.018 5.0225 5.016 5.0200 5.014 5.0175 Output Voltage (V) Output Voltage (V) AZ2940-5.0 5.012 5.010 AZ2940-5.0 5.008 5.006 5.004 IOUT=10mA 5.002 TJ=25 C 5.0150 5.0125 5.0100 5.0075 5.0050 VIN=6V 5.0025 TJ=25 C o o 5.0000 5.000 6 7 8 9 10 11 12 13 0 14 250 Input Voltage (V) Figure 4. Line Regulation 750 1000 Figure 5. Load Regulation 20 25.0 22.5 18 VIN=6V Ground Current (mA) TJ=25 C 17.5 15.0 12.5 10.0 AZ2940-5.0 7.5 o TJ=25 C 16 o 20.0 Ground Current (mA) 500 Output Current (mA) 14 12 IOUT=100mA 10 IOUT=1A 8 6 5.0 4 2.5 2 0 0.0 0 250 500 750 0 1000 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 Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 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 AZ2940-5.0 250 200 150 IOUT=10mA 0.34 0.33 AZ2940-5.0 0.32 0.31 0.30 0.29 o 100 VIN=6V TJ=25 C 0.28 50 0.27 0 0 250 500 750 -25 1000 0 25 50 75 100 125 o Junction Temperature ( C) Output Current (mA) Figure 9. Ground Current vs. Junction 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 AZ2940-5.0 2.50 2.25 IOUT=1A 8.5 8.0 AZ2940-5.0 7.5 7.0 6.5 2.00 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 Junction Temperature ( C) Junction Temperature ( C) Figure 11. Ground Current vs. Junction Temperature Figure 10. Ground Current vs. Junction Temperature Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 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 AZ2940-5.0 300 400 375 350 AZ2940-5.0 325 300 275 275 250 IOUT=1A 250 IOUT=750mA 225 225 200 200 -25 0 25 50 75 100 125 -25 0 o 25 50 75 Junction Temperature ( C) 125 Junction Temperature ( C) Figure 13. Dropout Voltage vs. Junction Temperature Figure 12. Dropout Voltage vs. Junction Temperature 100 5.05 COUT=2.2µF Output Capacitor ESR (Ω) 5.04 5.03 AZ2940-5.0 Output Voltage (V) 100 o 5.02 5.01 5.00 4.99 4.98 VIN=6V 4.97 VOUT=5V 10 O TA=25 C Stable Range 1 0.1 IOUT=10mA 4.96 Unstable Range 4.95 -25 0 25 50 75 100 0.01 125 0 o Junction Temperature ( C) 20 40 60 80 100 Output Current (mA) Figure 14. Output Voltage vs. Junction Temperature Figure 15. Output Capacitor ESR vs. Output Current Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 11 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Typical Performance Characteristics (Continued) 0.4 ∆VOUT (0.2V/Div) 100 COUT=10µF O TA=25 C 0 -0.2 Stable Range 1 IOUT (0.5A/Div) Output Capacitor ESR (Ω) VOUT=5V 10 0.1 Unstable Range 0.01 0 200 400 600 800 1 0.5 0 -0.5 1000 Output Current (mA) Time (200µs/Div) Figure 17. Load Transient Figure 16. Output Capacitor ESR vs. Output Current 0.06 ∆VOUT (0.02V/Div) AZ2940-5.0 COUT=47µF 0.2 0 -0.2 ∆VIN (0.5V/Div) ∆VOUT (0.2V/Div) 0.4 IOUT (0.5A/Div) AZ2940-5.0 COUT=10µF 0.2 1 0.5 0 AZ2940-5.0 IOUT=10mA 0.04 0.02 0 1 0.5 0 -0.5 -0.5 Time (200µs/Div) Time (200µs/Div) Figure 18. Load Transient Figure 19. Line Transient Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 12 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Typical Performance Characteristics (Continued) 50 50 40 Power Dissipation (W) Power Dissipation (W) 40 Package:TO-252-2 (1) 2 45*43mm Heatsink No Heatsink 45 Package:TO-220-3 2 45*43mm Heatsink No Heatsink 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 0 25 50 75 100 125 o Case Temperature ( C) o Case Temperature ( C) Figure 20. Power Dissipation vs. Case Temperature Figure 21. Power Dissipation vs. Case Temperature 50 45 Package:TO-263-3 2 45*43mm Heatsink No Heatsink 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 Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 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. Mar. 2007 Rev. 1. 6 BCD Semiconductor Manufacturing Limited 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) Mar. 2007 Rev. 1. 6 0.356(0.014) 0.406(0.016) BCD Semiconductor Manufacturing Limited 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° Mar. 2007 Rev. 1. 6 2.540(0.100) BCD Semiconductor Manufacturing Limited 16 Data Sheet 1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940 Mechanical Dimensions (Continued) 1.350(0.053) 1.650(0.065) TO-252-2(1) 6.350(0.250) 6.650(0.262) 5.200(0.205) 5.400(0.213) Unit: mm(inch) 2.200(0.087) 2.400(0.094) 0.430(0.017) 0.580(0.023) 4.300(0.169) 5.400(0.212) 5° 0.700(0.028) 0.900(0.035) 0.500(0.020) 0.700(0.028) 2.300TYP 4.500(0.177) 4.700(0.165) 1.400(0.055) 1.780(0.070) 5° 3° 4° 0.430(0.017) 0.580(0.023) Mar. 2007 Rev. 1. 6 4.800(0.189) 6.500(0.256) 3.800REF(0.150REF) 5.400(0.213) 5.700(0.224) 0.000(0.000) 0.127(0.005) 2.550(0.100) 2.900(0.114) 0.600(0.024) 0.900(0.035) 9.500(0.374) 9.900(0.390) 8° BCD Semiconductor Manufacturing Limited 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. 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