TS432IRF

T S4 3 2 I Adjustable Precision Shunt Regulator T O- 9 2 Pin Definition: 1. Reference 2 . An o d e 3. Cathode SOT-23 Pin Definition: 1. Reference 2. Cathode 3 . An o d e SOT-25 Pin Definition: 1. N/C 2. N/C * 3. Cathode 4. Reference 5 . An o d e * (p in 2 is connect to substra te and must be connected to Anode or left open) General Description The TS432I/432AI/TS432BI is a three-terminal adjustable shunt regulator w ith specified ther mal stability. The output voltage may be set to any value between Vref (approximately 1.24V) and 18V with two external resistors. The TS432I/432AI/TS432BI has a typical output impedanc e of 0.05Ω . Active output circuitry provides a very shar p turn-on characteristic, mak ing the TS432I/432AI/TS432BI excellent replacement for zener diode in many applications. Features ● Precision Reference Voltage TS432I – 1.24V±2% TS432AI – 1.24V±1% TS432BI – 1.24V±0.5% Minimum Cathode Current for R egulation: 20uA(typ.) Equivalent Full Range Temp. Coefficient: 50ppm/ ºC Programmable Output Voltage up to 18V Fast Turn- On R esponse Sink Current Capability of 80uA to 100mA Low Dynamic Output Impedance: 0.2Ω Low Output Noise Ordering Information Part No. Package Packi ng TS432xIT B0 TO-92 1Kpcs / Bulk TS432xIT A3 TO-92 2Kpcs / Ammo TS432xIX RF SOT-23 3Kpcs / 7” Reel TS432xIX5 R F SOT-25 3Kpcs / 7” Reel Note: W here xx denotes voltage tolerance Blank: ±2% A: ±1 % B: ±0.5% ● ● ● ● ● ● ● Block Diagram Application ● ● ● ● ● ● Voltage Monitor Delay Timmer Constant –Current Source/Sink High-Current Shunt Regulator Crow Bar Over-Voltage / Under-Voltage Protection Absolute Maximum Rating (Ta = 25 oC unless otherwise noted) Parameter Cathode Voltage (Note 1) Continuous C athode Current Range Reference Input Current Range Power Dissipation Symbol Vka Ik Iref Limit Unit V mA mA W o o 18 100 3 T O- 9 2 0.625 SOT-23 Pd 0.35 SOT-25 0.35 Junction Temperature TJ +1 5 0 Operation Temperature Range TOPER - 4 0 ~ +8 5 Storage Temperature Range TSTG - 6 5 ~ +1 5 0 Note 1: Voltage values are with respec t to the anode terminal unless otherwise noted. o Note 2: Rating apply to ambient temperature at 25 C C C o C 1/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator Recommend Operating Condition Parameter Cathode Voltage (Note 1) Continuous C athode Current Range Symbol Vka Ik Limit 18 100 Unit V mA Recommend Operating Condition Parameter TS432I Reference voltage TS432AI TS432BI Vref Symbo Test Conditi ons Vka =Vr ef, Ik=10mA ( Figure 1) o Ta=25 C Vka =Vr ef, Ik=10mA Ta= full range ( Figure 1) Ika=10mA, Vka = 18V to Vref (Figure 2) R1=10KΩ, R2= ! , Ika=10mA Ta= full range ( Figure 2) R1=10KΩ, R2= ! , Ika=10mA Ta= full range ( Figure 2) Vref=0V ( Figure 3), Vka=18V f Vref Fi gure 3: Off-State Current Additional Information – Stability When The TS432I/432AI/432BI is used as a shunt regulator, there are two options for selection of CL, are recommended for optional stability: A) No load capacitance across the device, decouple at the load. B) Large capacitance across the device, optional decoupling at the load. The reason for this is that TS432I/432AI/432BI exhibits instability with capacitances in the range of 10nF to 1uF (approx.) at light cathode current up to 3mA (typ). The device is less stable the lower the cathode voltage has been set for. Therefore while the device will be perfectly stable operating at a cathode current of 10mA (approx.) with a 0.1uF capacitor across it, it w ill oscilla te transiently du ring sta rt up as the cathode current passes thro ugh the instability region. Select a very low capacitance, o r alternatively a high capacitance (10uF) will avoid this issue altogether. Since the user will probably w ish to have local decoupling at the load anyway, the most cost e ffective method is to use no capacitance at all directly across the device. PCB trace/via resistance and inductance prevent the local load decoupling from causing th e oscillation du ring the transient start up phase. Note: if the TS432I/432AI/432BI is located right at the load, s o the load decoupling capacitor is directly across it, then th is capacitor will have to be ≤1nF or ≥10uF. Applications Examples Fi gure 4: Voltage Monitor Fi gure 5: Output Contr ol for Three Termi nal Fixed Regulator 3/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator Applications Examples (Continue) Fi gure 6: Shunt Regul ator Fi gure 7: Hi gh Current Shunt Regulator Fi gure 8: Series Pass Regulator Fi gure 9: Constant Current Sour ce Fi gure 10: TRI AC Crowbar Fi gure 11: SCR Cr owbar 4/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator Applications Examples (Continue) Vin Vref Vout V+ ≈0.74V Fi gure 12: Si ngle-Supply Compar ator with TemperatureCompensated Threshold Fi gure 13: Constant Current Si nk Fi gure 14: Del ay Timer 5/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator Typical Performance Characteristics Test C ircuit for Voltage A mplificat ion Fi gure 14: Small-Si gnal Voltage Gai n and Phase Shift vs. Fr equency Test C ircuit for Reference Impedance Fi gure 15: Reference I mpedance vs. Frequency 6/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator Typical Performance Characteristics Test C ircuit for Curve A The areas under the curves represent conditions that may cause the device to oscillate. For curves B, C , and D , R2 and V+ were adjus ted to establish the initial VKA and IKA conditions with C L=0. VBATT and CL then were adjus ted to deter mine the ranges of stability. Test C ircuit for Curve B, C and D Fi gure 16: Stability Boundar y Conditi on Test C ircuit for Pulse Response, Ik=1mA Fi gure 17: Pulse Response 7/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator Electrical Characteristics Fi gure 18: Reference Voltage vs. Temperature Fi gure 19: Reference Current vs. Temper ature Fi gure 20: Cathode Current vs. Cathode Voltage 8/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator TO-92 Mechanical Drawing DIM A B C D E F G H TO-92 DIMEN SION MILLIMETER S INCH ES MIN MAX MIN MAX 4.30 4.70 0.169 0.185 4.30 4.70 0.169 0.185 14.30( typ) 0.563( typ) 0.43 0.49 0.017 0.019 2.19 2.81 0.086 0.111 3.30 3.70 0.130 0.146 2.42 2.66 0.095 0.105 0.37 0.43 0.015 0.017 Marking Diagram X = Tolerance Code (A = ±1%, B = ±0.5%, Blank = ±2%,) Y = Year Code M = Month C ode (A=Jan, B =Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oc t, K=Nov , L=Dec) L = Lo t C ode 9/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator SOT-23 Mechanical Drawing DIM A A1 B C D E F G H I J SOT-23 DIMENSION MILLIMETER S INCH ES MIN MAX MIN MAX. 0.95 BSC 0.037 BSC 1.9 BSC 0.074 BSC 2.60 3.00 0.102 0.118 1.40 1.70 0.055 0.067 2.80 3.10 0.110 0.122 1.00 1.30 0.039 0.051 0.00 0.10 0.000 0.004 0.35 0.50 0.014 0.020 0.10 0.20 0.004 0.008 0.30 0.60 0.012 0.024 5º 10º 5º 10º Marking Diagram X = Device Code (D = TS432AI, E = TS432BI, F = TS432I,) 3 = SOT-23 package Y = Year Code M = Month C ode (A=Jan, B =Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oc t, K=Nov , L=Dec) L = Lo t C ode 10/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator SOT-25 Mechanical Drawing DIM A+A1 B C D E E H L Ө1 S1 SOT-25 DIMENSION MILLIMETER S INCH ES MIN MAX MIN MAX. 0.09 1.25 0.0354 0.0492 0.30 0.50 0.0118 0.0197 0.09 0.25 0.0035 0.0098 2.70 3.10 0.1063 0.1220 1.40 1.80 0.0551 0.0709 1.90 BSC 0.0748 BSC 2.40 3.00 0.09449 0.1181 0.35 BSC 0.0138 BSC 0º 10º 0º 10º 0.95 BSC 0.0374 BSC Marking Diagram X = Device Code (D = TS432AI, E = TS432BI, F = TS432I,) 5 = SOT-25 package Y = Year Code M = Month C ode (A=Jan, B =Feb, C=Mar, D=Apl, E=May, F=Jun, G=Jul, H=Aug, I=Sep, J=Oc t, K=Nov , L=Dec) L = Lo t C ode 11/12 Version: A07 T S4 3 2 I Adjustable Precision Shunt Regulator Notice Specifications of the produc ts displayed herein are s ubject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Infor mation contained herein is intended to pr ovide a product description only. N o license, express or implied, to any intellectual proper ty rights is granted by this document. Except as provided in TSC’s terms and conditions of sale for such products , TSC assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of TSC products including liability or warranties relating to fitness for a par ticular purpose, merchantability, or infringement of any patent, copyright, or other intellectual proper ty right. The products shown herein are not designed for use in medical, life-saving, or life-sus taining applications . C ustomers using or selling these pr oducts for use in9 such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 12/12 Version: A07