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| Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS General Description 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%. This IC is available in 5 packages: TO-92 (bulk or ammo packing), SOT-23, SOT-23-5, SOT-89-3 and SOIC-8. AZ431-B Features * * * * * * * 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 * * * * * Charger Voltage Adapter Switching Power Supply Graphic Card Precision Voltage Reference SOIC-8 SOT-89-3 TO-92 SOT-23 SOT-23-5 TO-92 Ammo Packing Figure 1. Package Types of AZ431-B Mar. 2007 Rev. 2. 4 1 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Pin Configuration M Package (SOIC-8) N Package (SOT-23) ANODE AZ431-B R Package (SOT-89-3) CATHODE ANODE ANODE NC 1 2 3 4 8 7 6 5 REF 3 ANODE ANODE NC REF CATHODE REF ANODE CATHODE 1 2 1 2 3 Z Package (TO-92) Z Package (TO-92 Ammo Packing) K Package (SOT-23-5) 3 2 1 CATHODE ANODE REF 3 2 1 CATHODE ANODE REF NC NC CATHODE 1 2 3 5 ANODE 4 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 Mar. 2007 Rev. 2. 4 2 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Ordering Information AZ431-B AZ431 Circuit Type Voltage Tolerance A: 0.4% B: 0.8% Package E1: Lead Free Blank: Tin Lead TR: Tape and Reel or Ammo Blank: Tube or Bulk B: AZ431-B (20V) M: SOIC-8 Z: TO-92 N: SOT-23 K: SOT-23-5 R: SOT-89-3 Package Temperature Range -40 to 125oC -40 to 125oC Voltage Tolerance 0.4% 0.8% 0.4% 0.8% 0.4% Part Number Tin Lead Lead Free AZ431AN-BTRE1 AZ431BN-BTRE1 AZ431AK-BTR AZ431BK-BTR AZ431AZ-B AZ431AZ-BTR AZ431BZ-B AZ431BZ-BTR AZ431AM-B AZ431AM-BTR AZ431BM-B AZ431BM-BTR AZ431AR-BTR AZ431BR-BTR AZ431AK-BTRE1 AZ431BK-BTRE1 AZ431AZ-BE1 AZ431AZ-BTRE1 AZ431BZ-BE1 AZ431BZ-BTRE1 AZ431AM-BE1 AZ431AM-BTRE1 AZ431BM-BE1 AZ431BM-BTRE1 AZ431AR-BTRE1 AZ431BR-BTRE1 K4A K4B Marking ID Tin Lead Lead Free EA4 EA5 E4A E4B AZ431AZ-BE1 AZ431AZ-BE1 AZ431BZ-BE1 AZ431BZ-BE1 AZ431AM-BE1 AZ431AM-BE1 AZ431BM-BE1 AZ431BM-BE1 E43C E43D Packing Type Tape & Reel Tape & Reel Tape & Reel Tape & Reel Bulk Ammo Bulk Ammo Tube Tape & Reel Tube Tape & Reel Tape & Reel Tape & Reel SOT-23 SOT-23-5 AZ431AZ-B AZ431AZ-B AZ431BZ-B AZ431BZ-B AZ431AM-B AZ431AM-B AZ431BM-B AZ431BM-B 431C 431D TO-92 -40 to 125oC 0.4% 0.8% 0.8% 0.4% SOIC-8 -40 to 125oC 0.4% 0.8% 0.8% SOT-89-3 -40 to 125oC 0.4% 0.8% BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Mar. 2007 Rev. 2. 4 3 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Absolute Maximum Ratings (Note 1) Parameter Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Symbol VKA IKA IREF PD N, K Package: 370 Junction Temperature Storage Temperature Range ESD (Human Body Model) TJ TSTG ESD 150 -65 to 150 2000 oC oC AZ431-B Value 20 -100 to 150 10 M, Z, R Package: 770 Unit V mA mA Power Dissipation mW 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 Cathode Voltage Cathode Current Operating Ambient Temperature Range Symbol VKA IKA TA Min VREF 1.0 -40 Max 18 100 125 Unit V mA oC Mar. 2007 Rev. 2. 4 4 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Electrical Characteristics Operating Conditions: TA=25oC, unless otherwise specified. Parameter Reference Voltage 0.4% 0.8% Test Circuit 4 Symbol VREF Conditions VKA=VREF, IKA=10mA 0 to 70oC Deviation of Reference Voltage Over Full Temperature Range 4 VREF VKA=VREF IKA= 10mA -40 to 85oC -40 to 125oC Ratio of Change in Reference Voltage to the Change in Cathode Voltage Reference Current Deviation of Reference Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-state Cathode Current VREF VKA IREF IREF IKA (Min) IKA (Off) ZKA VKA= 10V to VREF VKA= 18V to 10V Min 2.490 2.480 Typ 2.500 2.500 4.5 4.5 4.5 -1.0 -0.5 0.7 0.4 0.4 Max 2.510 2.520 8 10 16 -2.7 mV/ V -2.0 4 1.2 1.0 A A mA A mV Unit V AZ431-B 5 IKA=10mA 5 5 4 IKA=10mA, R1=10K, R2= IKA=10mA, R1=10K, R2= TA=-40 to 125oC VKA=VREF VKA=18V, VREF=0 VKA=VREF, IKA=1 to 100mA f 1.0KHz 6 0.05 1.0 Dynamic Impedance 4 0.2 0.5 Mar. 2007 Rev. 2. 4 5 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Electrical Characteristics (Continued) AZ431-B R1 VIN IKA VKA VREF Figure 4. Test Circuit 4 for VKA=VREF R3 VIN IKA R1 IREF VKA=VREF(1+R1/R2)+ IREF*R1 R2 VREF VKA Figure 5. Test Circuit 5 for VKA>VREF VIN IOFF VKA Figure 6. Test Circuit 6 for IOFF Mar. 2007 Rev. 2. 4 6 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Typical Performance Characteristics AZ431-B 2.510 VKA = VREF 2.505 Reference Voltage (V) IKA = 10mA Reference Current (A) 1.5 R1=10K,R2=Infinite IKA=10mA 1.0 2.500 2.495 0.5 2.490 2.485 -60 -40 -20 0 20 40 60 o 80 100 120 140 0.0 -60 -40 -20 0 20 40 60 80 0 100 120 140 Ambient Temperature ( C) Ambient Temperature ( C) Figure 7. Reference Voltage vs. Ambient Temperature Figure 8. Reference Current vs. Ambient Temperature 150 VKA=VREF TA=25 C 0 800 600 Cathode Current (A) 400 200 0 -200 VKA=VREF TA=25 C 0 Cathode Current (mA) 100 50 0 -50 -100 -2 -1 0 1 2 3 -1.0 -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 Mar. 2007 Rev. 2. 4 7 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Typical Performance Characteristics (Continued) AZ431-B 2.0 1.8 VKA=18V VREF=0 VREF / VKA (mV/V) -0.9 VKA=3.5V to 18V Off-State Cathode Current (A) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -40 -1.0 -1.1 -1.2 -1.3 -1.4 -20 0 20 40 60 o 80 100 120 -40 -20 0 20 40 60 o 80 100 120 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 70 60 50 Output TA=25 C IKA=10mA 0 15K 10F I KA 242 Voltage Gain (dB) 40 30 20 10 0 -10 1k 8.2K 10k 100k 1M GND Small Signal Frequency (Hz) Figure 13. Small Signal Voltage Gain vs. Frequency Mar. 2007 Rev. 2. 4 8 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Typical Performance Characteristics (Continued) AZ431-B Output IKA=10mA Reference Impedance () 10 TA=25 C o 1K IKA 50 1 GND 0.1 1K 10K 100K 1,000K Frequency (Hz) Figure 15. Reference Impedance vs. Frequency 20 18 16 VKA=10V:No oscillation VKA=15V:No oscillation R1 (10K) IKA 150 Cathode Current (mA) 14 12 10 8 6 4 2 0 0.01 Stable Stable VKA=VREF VKA=5V R2 0.1 1 10 Load Capacitance (F) Figure 16. Stability Boundary Conditions vs. Load Capacitance Mar. 2007 Rev. 2. 4 9 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Typical Performance Characteristics (Continued) AZ431-B 5 Input Input and Output Voltage (V) 4 Output 220 3 2 Output Pulse Generator f=100KHz 50 1 GND 0 0 2 4 6 Time (S) Figure 18. Pulse Response of Input and Output Voltage Mar. 2007 Rev. 2. 4 10 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Typical Application R3 VIN R1 V OUT AZ431-B VOUT=(1+R1/R2)*VREF V REF R2 AZ431-B Figure 19. Shunt Regulator VIN R1 R4 R2 VREF VOUT VOUT=(1+R2/R3)*VREF AZ431-B R3 Figure 20. High Current Shunt Regulator R2 V IN I OUT R1 IOUT=VREF/R2 + IKA AZ431-B Figure 21. Current Source or Current Limit Mar. 2007 Rev. 2. 4 11 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Typical Application (Continued) AZ431-B VIN R1 8.2K AZ1117 Adjust R2 250 AZ431-B R3 250 VOUT 5V, 1A Figure 22. Precision 5V 1A Regulator C1 R2 680 R5 R1 3 R3 R4 VOUT U2 C2 Q1 2 AZ431-B COMP PWM Controller VFB 4 PS521 Figure 23. PWM Converter with Reference Mar. 2007 Rev. 2. 4 12 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Mechanical Dimensions TO-92 Unit: mm(inch) AZ431-B 1.100(0.043) 1.400(0.055) 3.430(0.135) MIN 0.360(0.014) 0.510(0.020) 3.300(0.130) 3.700(0.146) 0.000(0.000) 0.380(0.015) 1.600(0.063) MAX 4.400(0.173) 4.700(0.185) 4.300(0.169) 4.700(0.185) 0.380(0.015) 0.550(0.022) 1.270(0.050) TYP 2.440(0.096) 2.640(0.104) Mar. 2007 Rev. 2. 4 13 14.100(0.555) 14.500(0.571) BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Mechanical Dimensions (Continued) TO-92 Ammo Packing Unit: mm(inch) AZ431-B 12.400(0.488) 13.000(0.512) 1.000(0.039) P 4.400(0.173) 4.600(0.181) 1.000(0.039) h 3.400(0.134) 3.600(0.142) 4.400(0.173) 4.600(0.181) 19.000(0.748) 21.000(0.827) 0.380(0.015) 0.550(0.022) 1.000 (0.039) MAX 5.500(0.217) 6.500(0.256) 6.050(0.238) 6.650(0.262) 2.200(0.087) 2.800(0.110) 2.200(0.087) 2.800(0.110) 15.500(0.610) 16.500(0.650) 2.500(0.098) MIN 8.500(0.335) 9.500(0.374) 3.550(0.140) 4.150(0.163) 3.800(0.150) 4.200(0.165) 17.500(0.689) 19.000(0.748) 12.500(0.492) 12.900(0.508) 0.150(0.006) 0.250(0.010) 0.350(0.014) 0.450(0.018) Mar. 2007 Rev. 2. 4 14 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Mechanical Dimensions (Continued) SOT-23 Unit: mm(inch) AZ431-B Mar. 2007 Rev. 2. 4 15 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Mechanical Dimensions (Continued) SOT-23-5 Unit: mm(inch) AZ431-B 2.820(0.111) 3.020(0.119) 0.100(0.004) 0.200(0.008) 2.650(0.104) 2.950(0.116) 1.500(0.059) 1.700(0.067) 0.200(0.008) 0.700(0.028) REF 0.950(0.037) TYP 0.300(0.012) 0.400(0.016) 1.800(0.071) 2.000(0.079) 0.300(0.012) 0.600(0.024) 0 8 1.050(0.041) 1.250(0.049) 0.000(0.000) 0.100(0.004) 1.050(0.041) 1.150(0.045) Mar. 2007 Rev. 2. 4 16 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Mechanical Dimensions (Continued) SOT-89-3 Unit: mm(inch) AZ431-B 1.630(0.064) 1.830(0.072) 1.400(0.055)* 4.400(0.173) 4.600(0.181) 0.000(0.000) 0.076(0.003) 1.400(0.055) 1.600(0.063) R0.200(0.008) 3.950(0.156) 4.250(0.167) 1.200(0.047) 0.900(0.035) 2.300(0.091) 2.600(0.102) 3 10 0.360(0.014) 0.520(0.020) 3.000(0.118) 0.360(0.014) 0.480(0.019) 0.440(0.017) 0.560(0.022) 0.360(0.014) 0.440(0.017) 3 10 R0.150(0.006) Mar. 2007 Rev. 2. 4 17 BCD Semiconductor Manufacturing Limited Data Sheet ADJUSTABLE PRECISION SHUNT REGULATORS Mechanical Dimensions (Continued) SOIC-8 Unit: mm(inch) AZ431-B 7 4.700(0.185) 5.100(0.201) 1.350(0.053) 1.750(0.069) 0.320(0.013) 8 7 8 0.675(0.027) 0.725(0.029) D 5.800(0.228) 6.200(0.244) D 20:1 1.270(0.050) TYP 0.100(0.004) 0.300(0.012) R0.150(0.006) 0.800(0.031) 0.200(0.008) 1.000(0.039) 3.800(0.150) 4.000(0.157) 0 8 0.330(0.013) 0.510(0.020) 0.190(0.007) 0.250(0.010) 0.900(0.035) 1 5 R0.150(0.006) 0.450(0.017) 0.800(0.031) Mar. 2007 Rev. 2. 4 18 BCD Semiconductor Manufacturing Limited 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 Room E, 5F, Noble Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen 518026, China Tel: +86-755-8826 7951 Fax: +86-755-8826 7865 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 30920 Huntwood Ave. Hayward, CA 94544, U.S.A Tel : +1-510-324-2988 Fax: +1-510-324-2788 |
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