RS431AYSF3

RS431/ RS432 RS431/ RS432 Precision Programmable Reference FEATURES DESCRIPTION • Reference Voltage Tolerance at 25°C 0.5% (A Grade) 1% (B Grade) • Programmable output voltage to 36 V • Low dynamic output impedance 0.2 Ω • Sink current capability of 0.5 mA to 100 mA • Equivalent full-range temperature coefficient of 50ppm/°C typical • Temperature compensated for operation over full rated operating temperature range • Low output noise voltage • Fast turn on response • Operation junction temperature from -40°C to 150°C • The RS431 and RS432 device are three-terminal adjustable shunt regulators, with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between VREF (approximately 2.5V) and 36V with two external resistors. These devices have provided a very sharp turn-on characteristic, making these devices excellent replacement for Zener diodes in many applications. Both the RS431 and RS432 devices are offered in two grades, with initial tolerances (at 25°C) of 0.5% and 1%, for A and B grade. Device Information (1) Lead-Free Packages: SOT23 APPLICATIONS PART NUMBER PACKAGE(PIN) BODY SIZE (NOM) RS431 SOT23(3) 1.30mm×2.92mm RS432 SOT23(3) 1.30mm×2.92mm (1) • Adjustable voltage and current referencing • Power supply • Zener replacement • Voltage monitoring • Comparator with integrated reference • As precision voltage reference For more detail information packages, see the order sheet. Function Block Diagram CATHODE REFERENCE CATHODE (K) REFERENCE (R) 2.5V Vref ANODE(A) ANODE REV A.3 1 / 11 www.run-ic.com RS431/ RS432 Revision History Note: Page numbers for previous revisions may different from page numbers in the current version. Version Change Date A.1 2018/11/03 A.2 2020/03/25 A.3 2021/10/28 Change Item Initial version completed (1) Change part-number to ordering information table for production management. (2) Added Figure 8 Reference Voltage vs. Ambient Temperature (1) Update parameters in Electrical Characteristics on Page 5@A.2 Version (2) Update parameters in Typical Performance Characteristics on Page 7, 8@A.2 Version 2 / 11 www.run-ic.com RS431/ RS432 Pin configuration and Functions (Top View) Cathode 1 Ref 1 3 Anode 3 Anode Ref 2 Cathode 2 RS431 RS432 Pin Description PIN NAME DESCRIPTION RS431 RS432 Cathode 1 2 Shunt Current/ Voltage input Ref 2 1 Threshold relative to common anode Anode 3 3 Common pin, normally connected to ground 3 / 11 www.run-ic.com RS431/ RS432 PACKAGE/ORDERING INFORMATION PRODUCT ORDERING NUMBER VOLTAGE TOLERANCE PACKAGE LEAD PACKAGE MARKING (1/2) PACKAGE OPTION RS431AYSF3 0.5% SOT23 431AXX Tape and Reel,3000 RS431BYSF3 1% SOT23 431BXX Tape and Reel,3000 RS432AYSF3 0.5% SOT23 432AXX Tape and Reel,3000 RS432BYSF3 1% SOT23 432BXX Tape and Reel,3000 RS431 RS432 NOTE: (1) XX = Data Code (2) There may be additional marking, which relates to the lot trace code information (include data code and vendor code), the logo or the environmental category on the device. 4 / 11 www.run-ic.com RS431/ RS432 SPECIFICATIONS Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted) (1)(2) Characteristics Symbol MIN MAX UNIT Cathode Voltage VKA -0.3 37 V Cathode Current Range (Continuous) IKA -100 +155 mA Reference Input Current Range IREF -0.05 +10 mA Operating junction temperature Topr -40 Power Dissipation PD Storage temperature Tstg (1) (2) +150 -55 °C mW 370 150 °C Stresses beyond 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-rated conditions for extended periods may affect device reliability. All voltages are with respect to the GND pin. ESD Ratings V(ESD) Electrostatic discharge VALUE UNIT Human-body model (HBM) ±5000 V Charge device model (CDM) ±1500 V Machine model (MM) ±200 V Recommended Operating Conditions over operating free-air temperature range (unless otherwise noted) Characteristics Symbol MIN MAX UNIT Cathode Voltage VKA VREF 36 V Cathode Current Range (Continuous) IKA 0.5 100 mA Operating Ambient Temperature Range TA -40 +125 °C Thermal Information RS431/ RS432 THERMAL METRIC (1) SOT23 UNIT 3 PINS RθJA Junction-to-ambient thermal resistance 185.6 °C/W RθJC (top) Junction-to-case (top) thermal resistance 104.3 °C/W RθJB Junction-to-board thermal resistance 54.5 °C/W ψJT Junction-to-top characterization parameter 31.0 °C/W ψJB Junction-to-board characterization parameter 54.5 °C/W RθJC (bot) Junction-to-case (bottom) thermal resistance N/A °C/W 5 / 11 www.run-ic.com RS431/ RS432 Electrical Characteristics (Over recommended operating conditions, Full= -40°C to +125°C, typical values are at TA= +25°C, unless otherwise noted.) PARAMETER SYMBOL MIN TYP MAX UNIT 0.5% 2.488 2.50 2.512 V 1% 2.475 2.50 2.525 V - 20 60 mV ΔVKA=10V~VREF - -1.2 -2.0 ΔVKA=36V~10V - -1.5 -2.0 CONDITIONS Reference Input Voltage VREF VKA=VREF, IKA=10mA Deviation of reference Input Voltage Over temperature ΔVREF VKA=VREF, IKA=10mA TA= -40°C ~ +125°C Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage ΔVREF/ΔVKA IKA=10mA Reference Input Current IREF IKA=10mA, R1=10kΩ, R2=∞ - 1.7 4.0 uA ΔIREF IKA=10mA, R1=10kΩ, R2=∞ TA= -40°C ~ +125°C - 2 5 uA Minimum cathode current for regulation IKA (min) VKA=VREF - 0.3 0.5 mA Off-state Cathode Current IKA (OFF) VKA=36V, VREF=0V - 0.05 0.5 uA Dynamic Impedance ZKA VKA=VREF, IKA=1mA to100mA f≤1.0KHz - 0.2 0.5 Ω Deviation of Reference Input Current Over Full Temperature Range 6 / 11 mV/V www.run-ic.com RS431/ RS432 TYPICAL APPLICATIONS CIRCUIT R3 VIN VOUT VOUT= (1+R1/R2)*VREF R1 VREF RS431 R2 Figure 1. Shunt Regulator VIN VOUT R3 R4 VOUT= (1+R1/R2)*VREF R1 VREF RS431 R2 Figure 2. High Current Shunt Regulator VIN R2 IOUT R1 IOUT= VREF/R2+IKA RS431 Figure 3. Current Source or Current Limit 7 / 11 www.run-ic.com RS431/ RS432 140 120 100 80 60 40 20 0 -20 -40 -60 VKA=VREF TA=25℃ -1 Cathode Current(μA) Cathode Current(mA) TYPICAL PERFORMANCE CHARACTERISTICS 0 1 2 1200 1000 800 600 400 200 0 -200 -400 -600 VKA=VREF TA=25℃ IKA(min) -1 3 0 1 2 3 Cathode Voltage (V) Cathode Voltage (V) Figure 4. Cathode Current vs Cathode Voltage Figure 5. Cathode Current vs Cathode Voltage TA=25℃ Input 2V/ div IKA=10mA TA=25℃ -5 -10 -15 -20 -25 Output 1V/ div Change In Reference Input Voltage (mV) 0 -30 -35 -40 0 5 10 15 20 25 30 35 100us/ div 40 Cathode Voltage (V) Figure 6. Change in Reference Input Voltage vs Cathode voltage Figure 7. Pulse Response 100 70 Voltage Amplification (dB) Impedance (Ω) IKA=1mA~100mA TA=25℃ 10 1 0.1 IKA=10mA TA=25℃ 60 50 40 30 20 10 0 -10 1K 10K 100K 1M 10M 1K Frequency (Hz) Figure 8. Dynamic Impedance vs Frequency 10K 100K 1M 10M Frequency (Hz) Figure 9. Small Signal Voltage Amplification vs Frequency 8 / 11 www.run-ic.com RS431/ RS432 100 90 A VKA=VREF B V =5V 80 C VKA =10V KA 70 D VKA=15V 60 50 A 40 30 Stable 20 10 0 0.001 0.01 2.505 Reference Voltage VREF (V) IKA-Cathode Current (mA) TYPICAL PERFORMANCE CHARACTERISTICS (Continued) TA=25℃ B C Stable D 2.495 2.49 2.485 2.48 2.475 0.1 1 -40 -20 10 0 20 40 60 80 100 120 140 Temperature (℃) CL-Load Capacitance (uF) Figure 10. Cathode Current vs Load Capacitance Reference Input Current IREF (uA) VKA=VREF IKA= 10mA 2.5 Figure 11. Reference Voltage vs Ambient Temperature 4 VKA=VREF IKA= 10mA 3.5 3 2.5 2 1.5 1 0.5 0 -40 -20 0 20 40 60 80 100 120 140 Temperature (℃) Figure 12. Reference Input Current vs Ambient Temperature 9 / 11 www.run-ic.com RS431/ RS432 PACKAGE OUTLINE DIMENSIONS SOT23 D 1.90 b 2.29 E1 E 0.76 0.95 0.76 e e1 RECOMMENDED LAND PATTERN (Unit: mm) 0.2 A A2 c θ L A1 Dimensions In Millimeters Dimensions In Inches Symbol Min Max Min Max A 0.900 1.150 0.035 0.045 A1 0.000 0.100 0.000 0.004 A2 0.900 1.050 0.035 0.041 b 0.300 0.500 0.012 0.020 c 0.080 0.150 0.003 0.006 D 2.800 3.000 0.110 0.118 E 1.200 1.400 0.047 0.055 E1 2.250 2.550 0.089 0.100 e 0.950 (BSC) 0.037 (BSC) e1 1.800 2.000 0.071 0.079 L 0.300 0.500 0.012 0.020 θ 0° 8° 0° 8° 10 / 11 www.run-ic.com RS431/ RS432 TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSION Reel Diameter Reel Width(W1) DIRECTION OF FEED NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF TAPE AND REEL Package Type SOT23 Reel Diameter 7’’ Reel Width (mm) 9.5 A0 (mm) 3.15 B0 (mm) 2.77 11 / 11 K0 (mm) 1.22 P0 (mm) 4.0 P1 (mm) 4.0 P2 (mm) 2.0 W (mm) 8.0 Pin1 Quadrant Q3 www.run-ic.com