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| Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 General Description The AZ432 series ICs are low voltage three-terminal adjustable regulators with guaranteed thermal stability over a full operation range. These ICs feature sharp turn-on characteristics, low temperature coefficient and low output impedance, which make them ideal substitutes for Zener diodes in applications such as switching power supply, charger, motherboard and other adjustable regulators. The output voltage can be set to any value between 1.25V and 18V with two external resistors. The AZ432 precision reference is offered in two voltage tolerance: 0.5% and 1.0%. These ICs are available in 4 packages: TO-92 (bulk or ammo packing), SOT-23, SOT-23-5, SOT-89-3. Features * * * * * * * * Wide Programmable Precise Output Voltage from 1.25V to 18V High Stability under Capacitive Load Low Temperature Deviation: 3mV Typical Low Equivalent Full-Range Temperature Coefficient: 20PPM/oC Typical Low Dynamic Output Resistance: 0.05 Typical High Sink Current Capacity from 0.1mA to 100 mA Low Output Noise Wide Operating Range of -40 to 125oC Applications * * * * * Graphic Card PC Motherboard Voltage Adapter Switching Power Supply Charger TO-92 TO-92 Ammo Packing SOT-89-3 SOT-23-5 SOT-23 Figure 1. Package Types of AZ432 Mar. 2007 Rev. 1. 6 1 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Pin Configuration Z Package (TO-92) Z Package (TO-92 Ammo Packing) N Package (SOT-23) ANODE 3 2 1 CATHODE 3 ANODE REF 1 2 3 2 1 CATHODE ANODE REF REF CATHODE K Package (SOT-23-5) R Package (SOT-89-3) NC NC CATHODE 1 2 3 5 ANODE 1 4 REF REF 2 3 ANODE CATHODE Figure 2. Pin Configuration of AZ432 (Top View) Functional Block Diagram CATHODE REF + - VREF ANODE Figure 3. Functional Block Diagram of AZ432 Mar. 2007 Rev. 1. 6 2 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Ordering Information AZ432 Circuit Type E1: Lead Free Blank: Tin Lead TR: Tape and Reel or Ammo Blank: Tube or Bulk Bandage Tolerance A: 0.5% B: 1.0% Package Z: TO-92 N: SOT-23 K: SOT-23-5 R: SOT-89-3 Package Temperature Range Voltage Tolerance 0.5% Part Number Tin Lead AZ432AZ AZ432AZTR AZ432BZ AZ432BZTR Lead Free AZ432AZ-E1 AZ432AZTR-E1 AZ432BZ-E1 AZ432BZTR-E1 AZ432ANTR-E1 AZ432BNTR-E1 AZ432AKTR AZ432BKTR AZ432ARTR AZ432BRTR AZ432AKTR-E1 AZ432BKTR-E1 AZ432ARTR-E1 AZ432BRTR-E1 K43 K44 R42A R42B Marking ID Tin Lead AZ432AZ AZ432AZ AZ432BZ AZ432BZ Lead Free AZ432AZ-E1 AZ432AZ-E1 AZ432BZ-E1 AZ432BZ-E1 EA8 EA9 E7A E8A E42A E42B Packing Type Bulk Ammo Bulk Ammo Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel Tape & Reel TO-92 -40 to 125oC 0.5% 1.0% 1.0% SOT-23 -40 to 125oC -40 to 125oC -40 to 125oC 0.5% 1.0% 0.5% 1.0% 0.5% 1.0% SOT-23-5 SOT-89-3 BCD Semiconductor's Pb-free products, as designated with "E1" suffix in the part number, are RoHS compliant. Mar. 2007 Rev. 1. 6 3 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Absolute Maximum Ratings (Note 1) Parameter Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Symbol VKA IKA IREF PD N, K Package Junction Temperature Storage Temperature Range TJ TSTG 150 -65 to 150 370 oC oC Value 20 -100 to 100 10 Z, R Package 770 Unit V mA mA Power Dissipation mW 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 Operation Ratings Parameter Cathode Voltage Cathode Current Operating Ambient Temperature Range Symbol VKA IKA Min VREF 0.1 -40 Max 18 100 125 Unit V mA o C Mar. 2007 Rev. 1. 6 4 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Electrical Characteristics (Typical and limits apply for TA=25oC, unless otherwise noted.) Parameter Reference Voltage 0.5% 1.0% Test Circuit 4 Symbol VREF Conditions VKA=VREF, IKA=10mA 0 to 70oC Deviation of Reference Voltage Over Full Temperature Range Ratio of Change in VREF to the Change in Cathode Voltage Reference Input Current Deviation of Reference Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-state Cathode Current Dynamic Impedance 4 VREF VREF VKA IREF IREF IKA (MIN) IKA (OFF) ZKA VKA=VREF IKA=10mA -40 to 85oC -40 to 125 5 5 5 4 6 4 IKA=10mA, VKA: VREF to 16V IKA=10mA, R1=10K, R2= IKA=10mA, R1=10K, R2= TA=-40 to 125oC VKA=VREF VREF=0, VKA=18V VKA=6V, VREF=0 VKA=VREF, IKA=1 to 100mA f1.0kHz oC Min 1.244 1.238 Typ 1.250 1.250 2 3 4 -0.5 0.15 0.1 55 0.04 0.01 0.05 Max 1.256 1.262 10 10 15 -1.5 0.4 0.4 80 0.10 0.05 0.15 Unit V mV mV/V A A A A Mar. 2007 Rev. 1. 6 5 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Electrical Characteristics (Continued) 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. 1. 6 6 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Typical Performance Characteristics 1.253 0.18 1.252 VKA=VREF Reference Current (A) Reference Voltage (V) IKA=10mA 1.251 0.17 R1=10K R2=Infinite IKA=10mA 0.16 1.250 0.15 1.249 0.14 1.248 0.13 1.247 -50 -25 0 25 50 75 o 100 125 150 0.12 -50 -25 0 25 50 o 75 100 Ambient Temperature ( C) Ambient Temperature ( C) Figure 7. Reference Voltage vs. Ambient Temperature Figure 8. Reference Current vs. Ambient Temperature 150 400 100 VKA=VREF TA=25 C Cathode Current (A) o 300 200 100 0 -100 -200 VKA=VREF TA=25 C o Cathode Current (mA) 50 0 -50 -100 -300 -150 -1 0 1 -1.0 -0.5 0.0 0.5 1.0 1.5 Cathode Voltage (V) Cathode Voltage (V) Figure 9. Cathode Current vs. Cathode Voltage Figure 10. Cathode Current vs. Cathode Voltage Mar. 2007 Rev. 1. 6 7 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Typical Performance Characteristics (Continued) Output 70 60 50 TA=25 C IKA=10mA 0 6.8K 10F I KA 360 Voltage Gain (dB) 40 30 20 10 0 -10 1k 4.3K 10k 100k Small Signal Frequency (Hz) GND Figure 11. Small Signal Voltage Gain vs. Frequency 10 Output 100 IKA Impedance () 1 50 0.1 GND 0.01 1k 10k 100k 1M Frequency (Hz) Figure 12. Dynamic Impedance vs. Frequency Mar. 2007 Rev. 1. 6 8 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Typical Performance Characteristics (Continued) 3 Input and Output Voltage (V) Input Output R1 1.8K Pulse Generator f=100KHz R2 50 2 1 Output GND 0 -1 0 1 2 3 4 5 6 Time (S) Figure 13. Pulse Response of Input and Output Voltage -0.3 IKA=10mA Ratio of VREF to VKA (mV/V) VKA=VREF to 16V -0.4 -0.5 -40 0 40 o 80 120 Ambient Temperature ( C) Figure 14. Ratio of Delta Reference Voltage to the Ratio of Delta Cathode Voltage vs. Ambient Temperature Mar. 2007 Rev. 1. 6 9 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Typical ApplicationS R3 VIN R1 V OUT VOUT=(1+R1/R2)*VREF V REF R2 AZ432 Figure 15. Shunt Regulator VIN R1 R4 R2 VOUT VOUT=(1+R2/R3)*VREF VREF AZ432 R3 Figure 16. High Current Shunt Regulator R2 VIN IOUT R1 IOUT=VREF/R2+IKA AZ432 Figure17. Current Source or Current Limit Mar. 2007 Rev. 1. 6 10 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Typical Application (Continued) VIN R1 8.2K AZ1117 2.5V/1A R2 250 AZ432 R3 250 Figure18. Precision 2.5V/1A Regulator C1 R2 680 R5 R1 3 R3 R4 VOUT U2 C2 Q1 2 AZ432 COMP PWM Controller VFB 4 PS521 Figure 19. PWM Converter with Reference Mar. 2007 Rev. 1. 6 11 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Mechanical Dimensions TO-92 Unit: mm(inch) 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. 1. 6 12 14.100(0.555) 14.500(0.571) BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Mechanical Dimensions (Continued) TO-92 Ammo Packing Unit: mm(inch) 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. 1. 6 13 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Mechanical Dimensions (Continued) SOT-23 Unit: mm(inch) Mar. 2007 Rev. 1. 6 14 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Mechanical Dimensions (Continued) SOT-23-5 Unit: mm(inch) 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. 1. 6 15 BCD Semiconductor Manufacturing Limited Data Sheet LOW VOLTAGE (1.25V) ADJUSTABLE PRECISION SHUNT REGULATOR AZ432 Mechanical Dimensions (Continued) SOT-89-3 Unit: mm(inch) 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. 1. 6 16 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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