ADJUSTABLE PRECISION SHUNT REGULATORS General Description. Features. Applications

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1 General Description Features The 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 can be set to any value between V REF (2.5V) and the corresponding maximum cathode voltage (36V). The precision reference is offered in two voltage tolerance: 0.5% and 1.0%. This IC is available in 4 packages: TO-92 (bulk or ammo packing), SOT-23, SOT-23-5 and SOT-89. Programmable Precise Output Voltage from 2.5V to 36V High Stability under Capacitive Load Low Temperature Deviation: 4.5mV Typical Low Equivalent Full-range Temperature Coefficient with 20PPM/ o C Typical Sink Current Capacity from 1mA to 100mA Low Output Noise Wide Operating Range of -40 to 125 o C Applications Charger Voltage Adapter Switching Power Supply Graphic Card Precision Voltage Reference SOT-89 TO-92(Bulk Packing) TO-92(Ammo Packing) SOT-23 SOT-23-5 Figure 1. Package Types of 1

2 Pin Configuration N Package (SOT-23) ANODE R Package (SOT-89) K Package (SOT-23-5) NC ANODE NC CATHODE REF REF CATHODE REF ANODE CATHODE Z Package (TO-92(Bulk Packing)) Z Package (TO-92(Ammo Packing)) 3 CATHODE 3 CATHODE 2 ANODE 2 ANODE 1 REF 1 REF Figure 2. Pin Configuration of (Top View) Functional Block Diagram CATHODE REF + - V REF ANODE Figure 3. Functional Block Diagram of 2

3 Ordering Information - Circuit Type Voltage Tolerance A: 0.5% B: 1.0% E1: Lead Free G1: Green TR: Tape and Reel or Ammo Blank: Bulk Package N: SOT-23 K: SOT-23-5 R: SOT-89 Z: TO-92 Package SOT-23 SOT-23-5 TO-92 SOT-89 Temperature Range -40 to 125 o C -40 to 125 o C -40 to 125 o C -40 to 125 o C Voltage Tolerance Part Number Marking ID Packing Type Lead Free Green Lead Free Green 0.5% ANTR-E1 ANTR-G1 EB5 GB5 Tape & Reel 1.0% BNTR-E1 BNTR-G1 EB6 GB6 Tape & Reel 0.5% AKTR-E1 AKTR-G1 E6H G6H Tape & Reel 1.0% BKTR-E1 BKTR-G1 E6I G6I Tape & Reel 0.5% AZ-E1 AZ-G1 AZ-E1 AZ-G1 Bulk 0.5% AZTR-E1 AZTR-G1 AZ-E1 AZ-G1 Ammo 1.0% BZ-E1 BZ-G1 BZ-E1 BZ-G1 Bulk 1.0% BZTR-E1 BZTR-G1 BZ-E1 BZ-G1 Ammo 0.5% ARTR-E1 ARTR-G1 E43G G43G Tape & Reel 1.0% BRTR-E1 BRTR-G1 E43H G43H Tape & Reel 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. 3

4 Absolute Maximum Ratings (Note 1) Parameter Symbol Value Unit Cathode Voltage 40 V Cathode Current Range (Continuous) -100 to 150 ma Reference Input Current Range I REF 10 ma Power Dissipation P D Z, R Package: 770 N, K Package: 370 mw Junction Temperature T J 150 o C Storage Temperature Range T STG -65 to 150 o C ESD (Human Body Model) ESD 2000 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 Symbol Min Max Unit Cathode Voltage V REF 36 V Cathode Current ma Operating Ambient Temperature Range T A o C 4

5 Electrical Characteristics Operating Conditions: T A =25 o C, unless otherwise specified. Parameter Reference Voltage Deviation of Reference Voltage Over Full Temperature Range Ratio of Change in Reference Voltage to the Change in Cathode Voltage Test Circuit Symbol Conditions Min Typ Max Unit 0.5% V REF =V REF, =10mA 1.0% V REF =V REF = 10mA 5 V REF =10mA 0 to 70 o C to 85 o C to 125 o C = 10V to V REF = 36V to 10V Reference Current 5 I REF =10mA,R1=10K, R2= A V mv mv/v Deviation of Reference Current Over Full Temperature Range 5 I REF =10mA, R1=10K R2= T A =-40 to 125 o C A Minimum Cathode Current for Regulation 4 (Min) =V REF ma Off-state Cathode Current 6 (Off) =36V, V REF = A Dynamic Impedance 4 Z KA =V REF, =1 to 100mA, f 1.0KHz Thermal Resistance JC SOT SOT TO SOT o C/W 5

6 Electrical Characteristics (Continued) R1 V IN V REF Figure 4. Test Circuit 4 for =V REF R3 V IN R1 I REF =V REF (1+R1/R2)+ I REF *R1 R2 V REF Figure 5. Test Circuit 5 for >V REF V IN I OFF Figure 6. Test Circuit 6 for I OFF 6

7 Typical Performance Characteristics = V REF = 10mA R 1 =10K,R 2 =Infinite =10mA Reference Voltage (V) Reference Current ( A) Ambient Temperature ( o C) Ambient Temperature ( 0 C) Figure 7. Reference Voltage vs. Ambient Temperature Figure 8. Reference Current vs. Ambient Temperature 150 =V REF 800 =V REF Cathode Current (ma) T A =25 0 C Cathode Current ( A) T A =25 0 C Cathode Voltage (V) Cathode Voltage (V) Figure 9. Cathode Current vs. Cathode Voltage Figure 10. Cathode Current vs. Cathode Voltage 7

8 Typical Performance Characteristics (Continued) 2.0 Off-State Cathode Current ( A) =36V V REF =0 V REF / (mv/v) =3.5V to 36V Ambient Temperature ( o C) Ambient Temperature ( o C) Figure 11. Off-State Cathode Current vs. Figure 12. Ratio of Delta Reference Voltage to the Ambient Temperature Ratio of Delta Cathode Voltage 70 Output Voltage Gain (db) T A =25 0 C =10mA 10 F 15K K k 10k 100k 1M Small Signal Frequency (Hz) GND Figure 13. Small Signal Voltage Gain vs. Frequency 8

9 Typical Performance Characteristics (Continued) Reference Impedance ( ) 10 1 =10mA T A =25 o C 50 1K Output 0.1 1K 10K 100K 1,000K GND Frequency (Hz) Figure 14. Reference Impedance vs. Frequency 100 Cathode Current (ma) Stable Stable T A =25 o C =V REF = 5V:No oscillation =10V:No oscillation =15V:No oscillation R1 (10K) R Load Capacitance ( F) Figure 15. Stability Boundary Conditions vs. Load Capacitance 9

10 Typical Performance Characteristics (Continued) 5 Input Input and Output Voltage (V) Output Pulse Generator f=100khz Output GND Time ( S) Figure 16. Pulse Response of Input and Output Voltage 10

11 Typical Application R3 V IN V OUT R1 V REF R2 V OUT =(1+R1/R2)*V REF Figure 17. Shunt Regulator V IN R1 R4 V OUT R2 V OUT =(1+R2/R3)*V REF V REF R3 Figure 18. High Current Shunt Regulator R2 V IN I OUT R1 I OUT =V REF /R2 + Figure 19. Current Source or Current Limit 11

12 Typical Application (Continued) V IN R1 8.2K AZ1117 Adjust R2 250 V OUT 5V, 1A R3 250 Figure 20. Precision 5V 1A Regulator C1 R3 R4 R2 680 R5 V OUT R1 COMP PWM Controller VFB 3 4 U2 2 C2 Q1 PS521 Figure 21. PWM Converter with Reference 12

13 Mechanical Dimensions TO-92(Bulk Packing) Unit: mm(inch) 1.100(0.043) 1.400(0.055) 3.430(0.135) MIN 3.300(0.130) 3.700(0.146) 4.400(0.173) 4.700(0.185) 1.600(0.063) MAX 0.360(0.014) 0.510(0.020) 0.000(0.000) 0.380(0.015) 0.380(0.015) 0.550(0.022) (0.555) (0.571) 4.300(0.169) 4.700(0.185) 1.270(0.050) TYP 2.440(0.096) 2.640(0.104) 13

14 Mechanical Dimensions (Continued) TO-92(Ammo Packing) Unit: mm(inch) 4.400(0.173) 4.700(0.185) 1.100(0.043) 1.400(0.055) 3.430(0.135) MIN 4.300(0.169) 4.700(0.185) 1.270(0.050) Typ 3.300(0.130) 3.700(0.146) 0.360(0.014) 0.510(0.020) 0.000(0.000) 0.380(0.015) 1.600(0.063) MAX (0.512) (0.551) 4.500(0.177) 5.500(0.217) 0.380(0.015) 0.550(0.022) 2.540(0.100) Typ 14

15 Mechanical Dimensions (Continued) SOT-23 Unit: mm(inch) 15

16 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) 0.300(0.012) 0.600(0.024) 0.200(0.008) 0.700(0.028) REF 0.950(0.037) TYP 1.800(0.071) 2.000(0.079) 0.300(0.012) 0.400(0.016) (0.041) 1.250(0.049) 0.000(0.000) 0.100(0.004) 1.050(0.041) 1.150(0.045) 16

17 Mechanical Dimensions (Continued) SOT-89 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) 0.900(0.035) 1.200(0.047) 2.300(0.091) 2.600(0.102) (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) 17

18 IMPORTANT NOTICE reserves the right to make changes without further notice to any products or specifications herein. does not assume any responsibility for use of any its products for any particular purpose, nor does assume any liability arising out of the application or use of any its products or circuits. does not convey any license under its patent rights or other rights nor the rights of others. MAIN SITE BCD - Headquarters Semiconductor Manufacturing Limited - Wafer BCD FabSemiconductor Manufacturing Limited BCD - Wafer Semiconductor Fab Manufacturing Limited Shanghai - IC Design SIM-BCD Group Semiconductor Manufacturing Co., Ltd. No. Shanghai 1600, Zi SIM-BCD Xing Road, Semiconductor Shanghai ZiZhu Manufacturing Science-based Limited Industrial Park, , China 800 Yi Advanced Shan Road, Analog Shanghai Circuits , (Shanghai) China Corporation Tel: 800, , Yi Shan Road, Shanghai Fax: , China Tel: F, Zone B, 900, 1491, Yi Fax: Shan Road, Shanghai , China Tel: , Fax: Tel: , Fax: REGIONAL SALES OFFICE REGIONAL Shenzhen OfficeSALES OFFICE Shenzhen Shanghai SIM-BCD Office Semiconductor Manufacturing Co., Ltd., Shenzhen Office Shanghai Room E, 5F, SIM-BCD Noble Center, Semiconductor No.1006, Manufacturing 3rd Fuzhong Road, Co., Ltd. Futian Shenzhen District, Office Shenzhen, Advanced , China Analog Circuits (Shanghai) Corporation Shenzhen Office Taiwan Office BCD Taiwan Semiconductor Office (Taiwan) Company Limited 4F, 298-1, BCD Rui Semiconductor Guang Road, (Taiwan) Nei-Hu District, Company Taipei, Limited Taiwan 4F, 298-1, Rui Guang Road, Nei-Hu District, Taipei, USA Office USA BCD Office Semiconductor Corp. BCD Semiconductor Huntwood Ave. Corporation Hayward, CA 94544, Huntwood USA Ave. Hayward, Room Tel: E, 5F, Noble 7951 Center, No.1006, 3rd Fuzhong Road, Futian District, Shenzhen , China Tel: Taiwan 2808 CA Tel : 94544, U.S.A Tel: Fax: Fax: Fax: Tel: Fax: Tel Fax: : Fax: