CYStech Electronics Corp. Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 1/ 8 Adjustable Precision Shunt Regulators SOT-353 TL431S5 Description The TL431S5 series are three-terminal adjustable regulators with guaranteed thermal stability over applicable temperature range. The output voltage may be set to any value between VREF (approximately 2.500 volts) and 36 volts with two external resistors. These devices have a typical dynamic output impedance of 0.2Ω. Active output circuitry provides a very sharp turn-on characteristic, making these devices excellent replacement for zener diodes in many applications. Features • Programmable output voltage • Temperature coefficient is 20ppm/°C typical • Temperature compensated for operation over full temperature range • Low output noise voltage • Fast turn on response • Heat Resistance, Soldering iron : 300°C, 5 seconds • Pb-free lead plating and halogen-free package Classification Rank VREF A B 2.495±0.5% 2.495±1% Ordering Information Device TL431S5- X - T1 - G Package SOT-353 (Pb-free lead plating and halogen-free package) Shipping 3000 pcs / tape & reel Environment friendly grade : S for RoHS compliant products, G for RoHS compliant and green compound products Packing spec, T1 : 3000 pcs / tape & reel, 7” reel Product rank, zero for no rank products Product name TL431S5 CYStek Product Specification Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 2/ 8 CYStech Electronics Corp. Absolute Maximum Ratings (Operating temperature range applies unless otherwise specified) Characteristics Cathode Voltage Cathode Current Range (Continuous) Reference Input Current Range Power Dissipation Thermal Resistance, Junction to Ambient Operating Temperature Range Junction Temperature Range Storage Temperature Range Functional Block Diagram Symbol VKA IK IREF PD RθJA Topr Tj Tstg Value 37 -100~+150 0.05~+10 200 625 -40~+125 -65~+150 -65~+150 Unit V mA mA mW °C/W °C °C °C & Symbol Functional Block Diagram : Symbol : Cathode Cathode Reference + Reference VREF Anode Anode Test Circuits IN II VZ IREF II IN R1 IZ VREF Fig1. Test Circuit for VZ=VREF TL431S5 VZ IN VZ IREF IZ R2 VREF Fig 2. Test Circuit for VZ>VREF Note : VZ=VREF(1+R1/R2)+IREFxR1 Fig3. Test Circuit for Off-State Current CYStek Product Specification CYStech Electronics Corp. Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 3/ 8 Electrical Characteristics ( Ta=25°C unless otherwise specified ) Characteristics Reference Input Voltage A-RANK B-RANK Deviation of Reference Input Voltage Over-Temperature Ratio of Change in Reference Input Voltage to the Change in Cathode Voltage Reference Input Current Deviation of Reference Input Current Over Full Temperature Range Minimum Cathode Current for Regulation Off-State Cathode Current Dynamic impedance Symbol Test Conditions VREF VKA=VREF, IK=10mA VKA=VREF, IK=10mA Tmin≤Ta≤Tmax IK=10mA, ΔVREF / ΔVKA=10V-VREF ΔVKA IK=10mA, ΔKKA=36V-10V IK=10mA, R1=10kΩ, IREF R2=∞ I =10mA, R1=10kΩ, IREF(dev) K R2=∞, Ta=Full Range VREF(dev) Min Typ Max 2.480 2.495 2.510 2.470 2.495 2.520 Unit V - 4 17 mV - -1.4 -2.7 mV/V - -1.0 -2.0 mV/V - 2 4 μA - 0.4 1.2 μA IK(min) VKA=VREF - 0.34 0.5 mA IK(off) VKA=36V, VREF=0 VKA=VREF, f≤1.0KHz IK=1 to 100mA - 0.1 1.0 μA - 0.2 0.5 Ω ZKA Recommended Soldering Footprint TL431S5 CYStek Product Specification Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 4/ 8 CYStech Electronics Corp. Characteristic Curves CATHODE C URR ENT vs C ATHODE VOLTAGE CATHODE C URR ENT vs C ATHODE VOLTAGE 150 800 I K - C OTHODE C UR R ENT ( u A) I K - C OTHODE C UR R ENT (mA) 125 100 75 50 25 0 -25 -50 -75 -100 700 600 500 400 300 200 100 0 -100 -200 -2 -1 0 1 2 3 -1 -0. 5 2. 52 350 2. 515 300 Vre f - REF ERENC E INP UT CUR RENT (nA) Vre f - R EF ER ENC E INP UT VOLTAGE (mV) 0. 5 1 1. 5 2 2. 5 3 R EF ERENC E INP UT C URR ENT vs AMB IENT TEMP ER ATUR E R EF ERENC E INP UT VOLTAGE vs AMB IENT TEMP ER ATURE 2. 51 2. 505 2. 5 2. 495 2. 49 2. 485 2. 48 250 200 150 100 50 0 -50 -25 0 25 50 75 100 AMB IENT TEMP ER ATUR E(℃ ) TL431S5 0 V AK - C ATHODE VOLTAGE ( V) V A K - C ATHODE VOLTAGE (V) 125 0 25 50 75 100 125 AMB IENT TEMP ER ATUR E(℃ ) CYStek Product Specification CYStech Electronics Corp. Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 5/ 8 Characteristic Curves(Cont.) DYNAMIC IMP EDANC E vs F R EQUENC E CATHODE VOLTAGE vs R EF ER ENC E INP UT VOLTAGE 100 Z K A - DYNAMIC IMP EDANC E (Ω) ΔVre f - R EF ER ENC E INP UT VOLTAGE (mV) 0 -5 -10 -15 -20 -25 -30 0 5 10 15 20 25 30 35 10 1 0. 1 1 40 V KA - C ATHODE VOLTAGE (V) 1000 Power Derating Curve 40 250 Power Dissipation---PD(mW) OP EN-LOOP VOLTAGE GAIN (dB ) 100 f - F R EQUENC E (KHz ) OP EN-LOOP VOLTAGE GAIN vs F R EQUENCY 30 20 10 200 150 100 50 0 0 1 10 100 f - F R EQUENC Y (KHz ) TL431S5 10 1000 0 50 100 150 200 Ambient Temperature---TA(℃) CYStek Product Specification CYStech Electronics Corp. Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 6/ 8 Reel Dimension Carrier Tape Dimension TL431S5 CYStek Product Specification CYStech Electronics Corp. Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 7/ 8 Recommended wave soldering condition Product Pb-free devices Peak Temperature 260 +0/-5 °C Soldering Time 5 +1/-1 seconds Recommended temperature profile for IR reflow Profile feature Average ramp-up rate (Tsmax to Tp) Preheat −Temperature Min(TS min) −Temperature Max(TS max) −Time(ts min to ts max) Time maintained above: −Temperature (TL) − Time (tL) Peak Temperature(TP) Time within 5°C of actual peak temperature(tp) Ramp down rate Time 25 °C to peak temperature Sn-Pb eutectic Assembly Pb-free Assembly 3°C/second max. 3°C/second max. 100°C 150°C 60-120 seconds 150°C 200°C 60-180 seconds 183°C 60-150 seconds 240 +0/-5 °C 217°C 60-150 seconds 260 +0/-5 °C 10-30 seconds 20-40 seconds 6°C/second max. 6 minutes max. 6°C/second max. 8 minutes max. Note : All temperatures refer to topside of the package, measured on the package body surface. TL431S5 CYStek Product Specification Spec. No. : C502S5 Issued Date : 2013.10.30 Revised Date : 2013.11.27 Page No. : 8/ 8 CYStech Electronics Corp. SOT-353 Dimension Device Code 431 XX Marking: Date Code 5-Lead SOT-353 Plastic Surface Mounted Package CYStek Package Code: S5 Style: Pin 1. Cathode (K) Pin 2. Not Connected (NC) Pin 3. Reference (R) Pin 4. Not Connected (NC) Pin 5. Anode (A) *:Typical Millimeters Min. Max. 0.900 1.100 0.000 0.100 0.900 1.000 0.150 0.350 0.080 0.150 2.000 2.200 1.150 1.350 DIM A A1 A2 b c D E Inches Min. Max. 0.035 0.043 0.000 0.004 0.035 0.039 0.006 0.014 0.003 0.006 0.079 0.087 0.045 0.053 DIM E1 e e1 L L1 θ Millimeters Min. Max. 2.150 2.450 0.650* 1.200 1.400 0.525 REF 0.260 0.460 0° 8° Inches Min. Max. 0.085 0.096 0.026* 0.047 0.055 0.021 REF 0.010 0.018 0° 8° Notes : 1.Controlling dimension : millimeters. 2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office. Material : • Lead : Pure tin plated. • Mold Compound : Epoxy resin family, flammability solid burning class:UL94V-0. Important Notice: • All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek. • CYStek reserves the right to make changes to its products without notice. • CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. • CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. TL431S5 CYStek Product Specification