TS431xRIX-Z Taiwan Semiconductor 2.495V Programmable Shunt Voltage Reference DESCRIPTION FEATURES TS431 integrated circuits are three-terminal programmable shunt regulator diodes. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from VREF to 36V with two external resistors. These devices exhibit a wide operating current range to 250mA with a typical dynamic impedance of 0.2Ω. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.495V reference makes it convenient to obtain a stable reference from 5.0V logic supplies, and since The TS431 operates as a shunt regulator, it can be used as either a positive or negative stage reference. ● Programmable Output Voltage up to 36V ● TS431A – VREF 2.495V ±1% tolerance ● TS431B – VREF 2.495V ±0.5% tolerance ● Fast Turn-On Response ● Sink Current Capability: 120mA ● Low Dynamic Output Impedance: 0.2Ω (Typ) ● Min. Operating Cathode Current: 0.2mA (Typ) ● Compliant to RoHS Directive 2011/65/EU and in accordance to WEEE 2002/96/EC ● Halogen-free according to IEC 61249-2-21 APPLICATION ● SMPS ● Lighting ● Telecommunication ● Home appliance SOT-23 Pin Definition: 1. Cathode 2. Reference 3. Anode Notes: MSL 3 (Moisture Sensitivity Level) per J-STD-020 SIMPLIFIED SCHEDMATIC 1 Version: A1603 TS431xRIX-Z Taiwan Semiconductor ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise noted) PARAMETER SYMBOL LIMIT UNIT Cathode Voltage VKA 36 V IK 120 mA Reference Input Current IREF 10 mA Power Dissipation PD 0.25 W TOPER -40 ~ +125 o +150 o TSTG -40 ~ +150 o SYMBOL LIMIT RӨJC 110 o 350 o Continuous Cathode Current Operating Temperature Range Junction Temperature TJ Storage Temperature Range C C C THERMAL PERFORMANCE PARAMETER Thermal Resistance - Junction to Case Thermal Resistance - Junction to Ambient RӨJA UNIT C/W C/W 2 Note: Consider measured with the PCB copper area of approximately 1 in (Multi-Layer) ELECTRICAL SPECIFICATIONS (TA=+25oC, unless otherwise specified) PARAMETER SYMBOL Reference voltage VREF Deviation of reference input voltage Radio of change in Vref to change in cathode Voltage Reference Input current current, over temp. Off-state Cathode Current Minimum operating cathode =10mA (Figure 1) VKA = VREF, IK =10mA /∆VKA ∆IREF | ZKA | IKA (min) 2.470 TS431B 2.483 VREF =0V V VKA = 10V to VREF -- -1.2 -2.0 VKA = 36V to 10V -- -1.0 -2.0 -- 1.5 3.5 µA -- 0.4 1.2 µA , VKA =36V -- 0.1 1.0 µA (Figure 1) -- 0.2 0.5 Ω -- 0.2 0.5 mA (Figure 2) (Figure 3) f<1KHz, VKA = VREF VKA = VREF 2.507 35 R1=10KΩ, R2= ∞ , IKA =10mA o 2.520 UNIT 25 (Figure 2) TA=-20~85 C 2.495 MAX -- R1=10kΩ, R2= ∞ IKA =10mA TYP (Figure 1) TA=-20~85 C (Figure 2) MIN TS431A o IKA =10mA, IKA (off) Dynamic Output Impedance VKA =VREF, IK ∆VREF IREF Deviation of reference input current ∆ VREF CONDITIONS (Figure 1) mV mV/V Note: The deviation parameters ∆VREF and ∆IREF are defined as difference between the maximum value and minimum value obtained over the full operating ambient temperature range that applied. ORDERING INFORMATION PART NO. PACKAGE PACKING TS431ARIX-Z RFG SOT-23 3,000pcs / 7” Reel TS431BRIX-Z RFG SOT-23 3,000pcs / 7” Reel 2 Version: A1603 TS431xRIX-Z Taiwan Semiconductor CHARACTERISTICS CURVES (TC = 25°C unless otherwise noted) 1 2.6 Vref - Reference Voltage (mV) 2.56 Iref - Reference Current(uA) VKA=Vref IKA=10mA 2.58 2.54 2.52 2.5 2.48 2.46 2.44 R1=10KΩ R2=∞ IKA=10mA 0.9 0.8 0.7 0.6 2.42 0.5 2.4 -55 -35 -15 5 25 45 65 85 105 -55 125 -35 -15 25 45 65 85 105 125 Figure 2. Iref vs. Ambient Temperature Figure 1. Vref vs. Ambient Temperature 1000 120 VKA=Vref TA=25°C VKA=Vref TA=25°C 100 IKA - Cathode Current (uA) 80 IKA - Cathode Current (mA) 5 TA - Free-Air Temperature(°C) TA - Free-Air Temperature(°C) 60 40 20 0 -20 -40 800 600 400 200 -60 -80 -100 0 -2 -1 0 1 2 3 0 1 VKA - Cathode Voltage(V) Figure 3. Cathode Current vs. Cathode Voltage 3 Figure 4. Cathode Current vs. Cathode Voltage -0.1 0.5 VKA=3V to 36V VKA=36V VREF=0 0.4 -0.15 ΔVref/ΔVKA (mV/V) IKOFF Off-state cathode current (uA) 2 VKA - Cathode Voltage(V) 0.3 0.2 -0.2 -0.25 -0.3 -0.35 0.1 -0.4 -0.45 0 -55 -35 -15 5 25 45 65 85 105 -55 125 Figure 5. Off-State Cathode current vs. Ambient Temperature -35 -15 5 25 45 65 85 105 125 TA - Free-Air Temperature(°C) TA - Free-Air Temperature(°C) Figure 6. Ration of delta reference voltage to delta cathode voltage vs. Ambient Temperature 3 Version: A1603 TS431xRIX-Z Taiwan Semiconductor TYPICAL PERFORMANCE CHARACTERISTICS Small-Signal Voltage Gain and Phase Shirt vs. Frequency Reference Impedance vs. Frequency Pulse Response 4 Version: A1603 TS431xRIX-Z Taiwan Semiconductor TYPICAL PERFORMANCE CHARACTERISTICS Stability Boundary Condition 5 Version: A1603 TS431xRIX-Z Taiwan Semiconductor PACKAGE OUTLINE DIMENSIONS (Unit: Millimeters) SOT-23 SUGGESTED PAD LAYOUT (Unit: Millimeters) MARKING DIAGRAM xRYML xR = Device code A = TS431A B = TS431B Y = Year Code M = Month Code for Halogen Free Product O =Jan P =Feb Q =Mar R =Apr S =May T =Jun U =Jul V =Aug W =Sep X =Oct Y =Nov Z =Dec L = Lot Code (1~9, A~Z) 6 Version: A1603 TS431xRIX-Z Taiwan Semiconductor Notice Specifications of the products displayed herein are subject to change without notice. TSC or anyone on its behalf, assumes no responsibility or liability for any errors or inaccuracies. Information contained herein is intended to provide a product description only. No license, express or implied, to any intellectual property 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 particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications. Customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify TSC for any damages resulting from such improper use or sale. 7 Version: A1603