TL431AIDBVR

TL431AIDBVR Programmable voltage reference Features SOT23-5 ■ Adjustable output voltage: 2.5 to 36 V NC 1 ■ Sink current capability: 1 to 100 mA NC 2 ■ Typical output impedance: 0.22 Ω Cathode 3 ■ 1% and 2% voltage precision ■ Automotive temp. range - 40 °C to +125 °C SOT23-5 5 Anode 4 Ref SOT23-5 pin connections (top view) Applications Power supply ■ Industrial ■ Automotive Cathode Ref Vref Anode co nd TL431AIDBVR block diagram CR O Se mi The TL431AIDBVR are programmable shunt voltage references with guaranteed temperature stability over the entire operating temperature range. The device temperature range is extended for the automotive version from -40 °C up to +125 °C. The output voltage can be set to any value between 2.5 and 36 V with two external resistors. The TL431AIDBVR operate with a wide current range from 1 to 100 mA with a typical dynamic impedance of 0.22 Ω. uc Description to r ■ Absolute maximum ratings and operating conditions Absolute maximum ratings JS MI Symbol VKA Parameter Cathode to anode voltage Value Unit 37 V Ik Continuous cathode current range -100 to +150 mA Iref Reference input current range -0.05 to +10 mA Rthja SOT23-5 157 °C/W Rthjc SOT23-5 67 °C/W Tstg Storage temperature range -65 to +150 °C Junction temperature 150 °C TL431AIDBVR: HBM (human body model) 3000 V TJ ESD www.jsmsemi.com 第１／６页 TL431AIDBVR Programmable voltage reference Operating conditions Symbol Parameter Value Unit Cathode to anode voltage Vref to 36 V Ik Cathode current 1 to 100 mA Toper TL431AIDBVR -40 to +125 °C VKA 25°C unless otherwise specified) Min. Parameter Reference input voltage VKA = Vref, Ik = 10 mA Tmin ≤ Tamb ≤ Tmax ΔVref Reference input voltage deviation over temperature range (1) VKA = Vref, Ik = 10 mA, Tmin≤ Tamb ≤ Tmax ΔIref 7 mV -2.7 -2 Se Reference input current Ik = 10 mA, R1 = 10 kΩ, R2 = ∞ Tmin ≤ Tamb ≤ Tmax mi Ratio of change in reference input voltage to change in cathode to anode voltage Ik = 10 mA, ΔVKA = 10 V to Vref Ik = 10 mA, ΔVKA = 36 V to 10 V Reference input current deviation over temperature range Ik = 10 mA, R1 = 10 kΩ, R2 = ∞, Tmin ≤ Tamb ≤ Tmax Minimum cathode current for regulation VKA = Vref Off-state cathode current Tmin ≤ Tamb ≤ Tmax JS MI Imin Ioff ⏐ZKA⏐ Unit V CR O Iref Max. 2.47 2.495 2.52 2.44 2.55 co Vref ΔVref -----------ΔVka Typ. uc Symbol nd Tamb = to r Electrical characteristics Dynamic impedance (2) VKA = Vref, Δ Ik = 1 to 100 mA, F ≤ 1 kHz 30 -1.4 -1 mV/V 1.8 4 6.5 µA 0.8 1.2 µA 0.5 0.6 mA 2.6 1000 3000 nA 0.22 0.5 Ω ΔV KA The dynamic impedance is defined as |ZKA| = --------------- ΔI k www.jsmsemi.com 第２／６页 TL431AIDBVR Programmable voltage reference Reference input voltage deviation over temperature range ΔVref is defined as the difference between the maximum and minimum values obtained over the full temperature range. ΔVref = Vref max - Vref min Test circuit for VKA = Vref uc to r Reference input voltage deviation over temperature range Test circuit for programming mode Input nd R Output R1 IK=10mA mi VKA co Input CR O Se VREF Test circuit for Ioff R R2 Output IK IREF VKA VREF VKA = VREF ( 1 + R1 ------- ) + R1 x IREF R2 Test circuit for phase margin and voltage gain 10μF IOFF 10μF Output www.jsmsemi.com 8.25kΩ Input IK=10mA 15kΩ JS MI VKA=36V VREF 第３／６页 TL431AIDBVR Programmable voltage reference Test circuit for response time Reference voltage vs. temperature Output IK=1mA 1 mA 0 mA Cathode voltage VKA (V) 2.54 VKA = VREF IK = 10 mA 2.52 2.50 2.48 2.44 -40 -20 0 to r 2.46 20 40 60 80 100 120 uc Temperature (°C) Zoom on reference voltage vs. cathode current CR O Se mi co nd Reference voltage vs. cathode current Reference current vs. temperature 0.4 Off-state current IOFF (μA) Reference current IREF (μA) JS MI 2.0 Off-state cathode current vs. temperature IK=10 mA R1=10kΩ R2= + ∝ 1.5 1.0 0.5 0.0 -40 VKA = 36 V VREF = 0 V 0.3 0.2 0.1 -20 0 20 40 60 80 100 120 0.0 -40 -20 0 20 40 60 80 100 120 Temperature (°C) Temperature °C www.jsmsemi.com 第４／６页 TL431AIDBVR Programmable voltage reference Ratio of change in Vref to change in VKA vs. temperature Static impedance RKA vs. temperature 0.20 Static impedance RKA (Ω) ΔVREF / ΔVKA (mV / V) 0.0 IK = 10 mA -0.5 -1.0 VKA=VREF 0.18 0.16 0.14 0.12 -2.0 -40 -20 0 20 40 60 80 100 120 0.10 -40 -20 0 40 60 80 100 120 uc Gain and phase vs. frequency nd Minimum operating current vs. temperature co 0.6 mi 0.4 VKA = VREF 0.2 -20 0 20 40 Se Minimum cathode current IMIN (mA) 20 Temperature (°C) Temperature (°C) 0.0 -40 to r -1.5 60 80 100 120 CR O Temperature (°C) Pulse response for Ik = 1 mA JS MI Stability behavior with capacitive loads www.jsmsemi.com 第５／６页 TL431AIDBVR Programmable voltage reference SOT23-5 package information mi SOT23-5 package mechanical data 7049676_I Dimensions Millimeters Se Ref. Min. A co nd uc to r SOT23-5 package mechanical drawing Typ. 0.90 Max. Min. 1.45 0.035 Typ. Max. 0.057 0.15 CR O A1 Inches 0.006 0.90 1.30 0.035 0.051 b 0.35 0.50 0.014 0.020 c 0.09 0.20 0.004 0.008 D 2.80 3.05 0.110 0.120 E 1.50 1.75 0.059 0.069 JS MI A2 e 0.95 0.037 H 2.60 3.00 0.102 0.118 L 0.10 0.60 0.004 0.024 θ 0 degrees 10 degrees www.jsmsemi.com 第６／６页