AZ431BK-ATRE1

Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS General Description Features The AZ431-B is a three-terminal adjustable shunt regulator with guaranteed thermal stability over a full operation range. It features sharp turn-on characteristics, low temperature coefficient and low output impedance, which make it ideal substitute for Zener diode in applications such as switching power supply, charger and other adjustable regulators. · The output voltage of AZ431-B can be set to any value between VREF (2.5V) and the corresponding maximum cathode voltage. The AZ431-B precision reference is offered in two voltage tolerance: 0.4% and 0.8%. · · · Programmable Precise Output Voltage from 2.5V to 18V High Stability under Capacitive Load Low Temperature Deviation: 4.5mV Typical Low Equivalent Full-range Temperature Coefficient with 20PPM/oC Typical Sink Current Capacity from 1mA to 100mA Low Output Noise Wide Operating Range of -40 to 125oC Applications · · · · · This IC is available in 4 packages: TO-92 (bulk or ammo packing), SOT-23, SOT-23-5 and SOT-89. SOT-89 · · · AZ431-B Charger Voltage Adapter Switching Power Supply Graphic Card Precision Voltage Reference TO-92(Ammo Packing) TO-92(Bulk Packing) SOT-23-5 SOT-23 Figure 1. Package Types of AZ431-B Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 1 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Pin Configuration K Package (SOT-23-5) R Package (SOT-89) N Package (SOT-23) ANODE 3 1 2 REF CATHODE 1 2 3 NC 1 * 2 CATHODE 3 5 ANODE 4 REF (Note 1) REF ANODE CATHODE Note 1: * Pin 2 is attached to substrate and must be connected to ANODE or open Z Package (TO-92(Ammo Packing)) Z Package (TO-92(Bulk Packing)) 3 CATHODE 3 CATHODE 2 ANODE 2 ANODE 1 REF 1 REF Figure 2. Pin Configuration of AZ431-B (Top View) Functional Block Diagram CATHODE + REF - VREF ANODE Figure 3. Functional Block Diagram of AZ431-B Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 2 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Ordering Information AZ431 Circuit Type E1: Lead Free G1: Green Voltage Tolerance A: 0.4% B: 0.8% TR: Tape and Reel or Ammo Blank: Bulk Package N: SOT-23 R: SOT-89 B: AZ431-B (20V) Package Temperature Range SOT-23 -40 to 125oC SOT-23-5 -40 to 125oC TO-92 SOT-89 - -40 to 125oC -40 to 125oC K: SOT-23-5 Z: TO-92 Part Number Marking ID Packing Type Voltage Tolerance Lead Free Green 0.4% AZ431AN-BTRE1 AZ431AN-BTRG1 EA4 GA4 Tape & Reel 0.8% AZ431BN-BTRE1 AZ431BN-BTRG1 EA5 GA5 Tape & Reel 0.4% AZ431AK-BTRE1 AZ431AK-BTRG1 E4A G4A Tape & Reel 0.8% AZ431BK-BTRE1 AZ431BK-BTRG1 E4B G4B Tape & Reel 0.4% AZ431AZ-BE1 AZ431AZ-BG1 AZ431AZ-BE1 AZ431AZ-BG1 Bulk 0.4% AZ431AZ-BTRE1 AZ431AZ-BTRG1 AZ431AZ-BE1 AZ431AZ-BG1 Ammo 0.8% AZ431BZ-BE1 AZ431BZ-BG1 AZ431BZ-BE1 AZ431BZ-BG1 Bulk 0.8% AZ431BZ-BTRE1 AZ431BZ-BTRG1 AZ431BZ-BE1 AZ431BZ-BG1 Ammo 0.4% AZ431AR-BTRE1 AZ431AR-BTRG1 E43C G43C Tape & Reel 0.8% AZ431BR-BTRE1 AZ431BR-BTRG1 E43D G43D Tape & Reel Lead Free Green BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Products with "G1" suffix are available in green packages. Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 3 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Absolute Maximum Ratings (Note 2) Parameter Symbol Value Unit Cathode Voltage VKA 20 V Cathode Current Range (Continuous) IKA -100 to 150 mA Reference Input Current Range IREF 10 mA PD Power Dissipation Z, R Package: 770 mW N, K Package: 370 TJ 150 Storage Temperature Range TSTG -65 to 150 ESD (Human Body Model) ESD 2000 Junction Temperature oC o C V Note 2: 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 Symbol Min Max Unit Cathode Voltage VKA VREF 18 V Cathode Current IKA 1.0 100 mA Operating Ambient Temperature Range TA -40 125 o Dec. 2012 Rev. 3.3 C BCD Semiconductor Manufacturing Limited 4 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Electrical Characteristics Operating Conditions: TA=25oC, unless otherwise specified. Parameter Reference Voltage 0.4% 0.8% Deviation of Reference Voltage Over Full Temperature Range Test Circuit Symbol 4 VREF 4 ΔVREF Conditions Min Typ Max 2.490 2.500 2.510 2.480 2.500 2.520 0 to 70oC 4.5 8 -40 to 85oC 4.5 10 -40 to 125oC 4.5 16 ΔVKA= 10V to VREF -1.0 -2.7 ΔVKA= 18V to 10V -0.5 -2.0 0.7 4 μA 0.4 1.2 μA VKA=VREF, IKA=10mA VKA=VREF IKA= 10mA Unit V mV Ratio of Change in Reference Voltage to the Change in Cathode Voltage 5 Reference Current 5 IREF Deviation of Reference Current Over Full Temperature Range 5 ΔIREF Minimum Cathode Current for Regulation 4 IKA (Min) VKA=VREF 0.4 1.0 mA Off-state Cathode Current 6 IKA (Off) VKA=18V, VREF=0 0.05 1.0 μA Dynamic Impedance 4 ZKA VKA=VREF, IKA=1 to 100mA f ≤ 1.0KHz 0.2 0.5 Ω Thermal Resistance ΔVREF ΔVKA θJC IKA=10mA IKA=10mA, R1=10KΩ, R2=∞ IKA=10mA, R1=10KΩ, R2=∞ TA=-40 to 125oC SOT-23 177.65 SOT-23-5 177.65 TO-92 107.04 SOT-89 30.30 Dec. 2012 Rev. 3.3 mV/ V o C/W BCD Semiconductor Manufacturing Limited 5 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Electrical Characteristics (Continued) R1 VKA VIN IKA VREF Figure 4. Test Circuit 4 for VKA=VREF R3 VIN VKA IKA R1 IREF VKA=VREF(1+R1/R2)+ IREF*R1 R2 VREF Figure 5. Test Circuit 5 for VKA>VREF VKA VIN IOFF Figure 6. Test Circuit 6 for IOFF Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 6 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Typical Performance Characteristics 1.5 2.510 VKA = VREF Reference Current (μA) Reference Voltage (V) R1=10K,R2=Infinite IKA = 10mA 2.505 2.500 2.495 IKA=10mA 1.0 0.5 2.490 2.485 -60 -40 -20 0 20 40 60 80 100 120 0.0 -60 140 -40 -20 0 o 60 80 100 120 140 Figure 8. Reference Current vs. Ambient Temperature 800 VKA=VREF VKA=VREF 0 TA=25 C 0 TA=25 C 600 100 Cathode Current (μA) Cathode Current (mA) 40 Ambient Temperature ( C) Figure 7. Reference Voltage vs. Ambient Temperature 150 20 0 Ambient Temperature ( C) 50 0 400 200 0 -50 -200 -100 -2 -1 0 1 2 -1.0 3 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 Cathode Voltage (V) Cathode Voltage (V) Figure 9. Cathode Current vs. Cathode Voltage Figure 10. Cathode Current vs. Cathode Voltage Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 7 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Typical Performance Characteristics (Continued) 1.8 VKA=18V 1.6 VREF=0 -0.9 ΔVREF / ΔVKA (mV/V) Off-State Cathode Current (μA) 2.0 1.4 1.2 1.0 0.8 0.6 0.4 VKA=3.5V to 18V -1.0 -1.1 -1.2 -1.3 0.2 -1.4 0.0 -40 -20 0 20 40 60 80 100 120 -40 -20 0 20 40 60 80 120 Ambient Temperature ( C) Ambient Temperature ( C) Figure 11. Off-State Cathode Current vs. Ambient Temperature Figure 12. Ratio of Delta Reference Voltage to the Ratio of Delta Cathode Voltage Output 70 0 TA=25 C 60 15K IKA=10mA 50 Voltage Gain (dB) 100 o o I KA 242 10μF 40 30 20 8.2K 10 0 -10 1k 10k 100k GND 1M Small Signal Frequency (Hz) Figure 13. Small Signal Voltage Gain vs. Frequency Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 8 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Typical Performance Characteristics (Continued) Output IKA=10mA 1K Reference Impedance (Ω) o 10 TA=25 C IKA 50 1 GND 0.1 1K 10K 100K 1,000K Frequency (Hz) Figure 14. Reference Impedance vs. Frequency Cathode Current (mA) 20 18 VKA=10V:No oscillation 16 VKA=15V:No oscillation R1 (10K) 14 12 150 IKA Stable Stable 10 8 6 4 R2 VKA=VREF VKA=5V 2 0 0.01 0.1 1 10 Load Capacitance (μF) Figure 15. Stability Boundary Conditions vs. Load Capacitance Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 9 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Typical Performance Characteristics (Continued) 5 Input and Output Voltage (V) Input Output 4 220 Pulse Generator f=100KHz 3 Output 2 50 1 0 GND 0 2 4 6 Time (μS) Figure 16. Pulse Response of Input and Output Voltage Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 10 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Typical Application R3 V OUT VIN R1 VOUT=(1+R1/R2)*VREF V REF AZ431-B R2 Figure 17. Shunt Regulator VIN R1 VOUT R4 VOUT=(1+R2/R3)*VREF R2 VREF AZ431-B R3 Figure 18. High Current Shunt Regulator R2 V IN I OUT IOUT=VREF/R2 + IKA R1 AZ431-B Figure 19. Current Source or Current Limit Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 11 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Typical Application (Continued) VIN VOUT AZ1117 R1 8.2K Adjust R2 250 5V, 1A AZ431-B R3 250 Figure 20. Precision 5V 1A Regulator R3 C1 R4 VOUT R2 680 R5 R1 U2 Q1 3 COMP C2 2 AZ431-B PWM Controller VFB 4 PS521 Figure 21. PWM Converter with Reference Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 12 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Mechanical Dimensions TO-92(Bulk Packing) Unit: mm(inch) 1.000(0. 039) 3.430(0. 135) MIN 3.700(0.146) 3.300(0.130) 1.400(0. 055) 0.320(0. 013) 0.510(0. 020) 0. 000(0. 000) 0. 380(0. 015) Φ1. 600(0. 063) MAX 4.700(0.185) 1.270(0. 050) TYP 15.500(0.610) 0.360(0. 014) 0.760(0. 030) 12.500(0.492) 4.300(0.169) 4.400(0. 173) 4.800(0. 189) 2.420(0.095) 2.660(0.105) Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 13 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Mechanical Dimensions (Continued) TO-92(Ammo Packing) Unit: mm(inch) 1. 100(0. 043) 3. 430(0.135) MIN 1.270(0.050) Typ 2.500(0.098) 4.000 (0.157 ) 0. 000(0.000) 0. 380(0.015) Φ1. 600(0. 063) MAX 14.500(0.571) 12.500(0.492) 0.320(0. 013) 0. 510(0. 020) 3.800(0.150) 3.300(0.130) 1. 400(0.055) 4.700(0.185) 4.300(0.169) 4.400(0.173) 4.800 (0.189 ) 13.000(0. 512) 15.000 (0.591 ) 0.380(0.015) 0.550(0.022 ) 2.540(0.100) Typ Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 14 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Mechanical Dimensions (Continued) SOT-23 3.0 ° 2.0° 1.050(0.041)REF 7.0° R0.100(0.004) 0.900(0.035) 1.100(0.043) 0.0°~10.0° 0.020(0.001) 0.100(0.004) 0.200(0.008)MIN 2.800(0.110) 3.000(0.118) 0.550(0.022)REF 7.0° 0.080(0.003) 0.150(0.006) 1.200(0.047) 1.400(0.055) 2.300(0.091) 2.500(0.098) 0.920(0.036) 0.980(0.039) 0.100(0.004) GAUGE PLANE 4×R0.100(0.004) 0.500(0.020) 0.700(0.028) Unit: mm(inch) 0.300(0.012) 0.500(0.020) 1.900(0.075)REF Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 15 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Mechanical Dimensions (Continued) SOT-23-5 Unit: mm(inch) 0.300(0.012) 0.600(0.024) 1.500(0.059) 1.700(0.067) 0.100(0.004) 0.200(0.008) 2.950(0.116) 2.650(0.104) 2.820(0.111) 3.020(0.119) 0.200(0.008) 0.700(0.028) REF 0.300(0.012) 0.400(0.016) 0° 8° 1.800(0.071) 2.000(0.079) 0.000(0.000) MAX 1.450(0.057) 0.950(0.037) TYP 0.150(0.006) 0.900(0.035) 1.300(0.051) Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 16 Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS AZ431-B Mechanical Dimensions (Continued) SOT-89 1.550(0.061)REF Unit: mm(inch) 4.400(0.173) 4.600(0.181) 1.400(0.055) 1.600(0.063) 1.030(0.041)REF 45 2.300(0.091) 2.600(0.102) 3.950(0.156) 4.250(0.167) 2.060(0.081)REF 3 0.900(0.035) 1.100(0.043) 0.320(0.013) 0.520(0.020) 0.480(0.019) 0.320(0.013) 0.520(0.020) 10 0.350(0.014) 0.450(0.018) 3.000(0.118) TYP 1.500(0.059) 1.800(0.071) 0.320(0.013)REF 3 2.210(0.087)REF 1.620(0.064)REF R0.150(0.006) 10 Dec. 2012 Rev. 3.3 BCD Semiconductor Manufacturing Limited 17 BCD Semiconductor Manufacturing Limited http://www.bcdsemi.com IMPORTANT NOTICE IMPORTANT NOTICE BCD Semiconductor BCD Semiconductor Manufacturing Manufacturing Limited Limited reserves reserves the the right right to to make make changes changes without without further further notice notice to to any any products products or or specifispecifications herein. cations herein. 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