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TL431QDBZR Folha de dados(PDF) 7 Page - NXP Semiconductors |
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TL431QDBZR Folha de dados(HTML) 7 Page - NXP Semiconductors |
7 / 27 page TL431_FAM All information provided in this document is subject to legal disclaimers. © NXP B.V. 2011. All rights reserved. Product data sheet Rev. 4 — 30 June 2011 7 of 27 NXP Semiconductors TL431 family Adjustable precision shunt regulator 11. Thermal characteristics [1] Device mounted on an FR4 PCB, single-sided copper, tin-plated and standard footprint. [2] Device mounted on an FR4 PCB, single-sided copper, tin-plated, mounting pad for anode 1 cm2. [3] Device mounted on a ceramic PCB, Al2O3, standard footprint. [4] Soldering point of anode. 12. Characteristics Table 9. Thermal characteristics Symbol Parameter Conditions Min Typ Max Unit Rth(j-a) thermal resistance from junction to ambient in free air [1] -- 360 K/W [2] -- 216 K/W [3] -- 132 K/W Rth(j-sp) thermal resistance from junction to solder point [4] -- 50 K/W Table 10. Characteristics Tamb =25 C unless otherwise specified. Symbol Parameter Conditions Min Typ Max Unit Standard-Grade (2 %): TL431CDBZR; TL431IDBZR; TL431QDBZR; TL431FDT; TL431MFDT; TL431SDT; TL431MSDT Vref reference voltage VKA =Vref; IK = 10 mA 2440 2495 2550 mV V ref reference voltage variation VKA =Vref; IK =10mA TL431CDBZR Tamb =0 Cto 70 C- 6 16 mV TL431IDBZR Tamb = 40 Cto85 C - 14 34 mV TL431QDBZR TL431FDT TL431MFDT TL431SDT TL431MSDT Tamb = 40 C to 125 C V ref/VKA reference voltage variation to cathode-anode voltage variation ratio IK =10mA V KA =10 V to Vref - 1.4 2.7 mV/V V KA =36 V to 10 V - 1 2mV/V Iref reference current IK =10mA; R1 = 10 k ; R2 = open -2 4 A I ref reference current variation IK =10mA; R1 = 10 k ; R2 = open TL431CDBZR Tamb =0 Cto 70 C- 0.4 1.2 A TL431IDBZR Tamb = 40 Cto85 C- 0.8 2.5 A TL431QDBZR TL431FDT TL431MFDT TL431SDT TL431MSDT Tamb = 40 C to 125 C IK(min) minimum cathode current VKA =Vref -0.4 1 mA |
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