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TLVH431BQDBVRQ1 Datasheet(PDF) 4 Page - Texas Instruments |
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TLVH431BQDBVRQ1 Datasheet(HTML) 4 Page - Texas Instruments |
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4 / 25 page  aVREF ppm oC + V REF(dev) V REF (TA +25 oC) 106 DTA z KA + ∆V KA ∆I K z KA + ∆V ∆I [ z KA 1 ) R1 R2 DVREF DVKA TLVH431A-Q1 TLVH431B-Q1 SLVS906B – DECEMBER 2008 – REVISED MARCH 2011 www.ti.com TLVH431A ELECTRICAL CHARACTERISTICS at 25 °C free-air temperature (unless otherwise noted) PARAMETER TEST CONDITIONS MIN TYP MAX UNIT TA = 25°C 1.228 1.24 1.252 VREF Reference voltage VKA = VREF, IK = 10 mA V TA = full range (1) 1.209 1.271 (see Figure 1) VREF deviation over full temperature VREF(dev) VKA = VREF, IK = 10 mA (see Figure 1) 11 31 mV range(1) (2) Ratio of VREF change to cathode VK = VREF to 18 V, IK = 10 mA (see Figure 2) –1.5 –2.7 mV/V voltage change Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2) 0.1 0.5 μA Iref deviation over full temperature Iref(dev) IK = 10 mA, R1 = 10 kΩ, R2 = open (see Figure 2) 0.15 0.5 μA range(1) (2) Minimum cathode current for IK(min) VKA = VREF (see Figure 1) 60 100 μA regulation IK(off) Off-state cathode current VREF = 0, VKA = 18 V (see Figure 3) 0.02 0.1 μA VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 70 mA |zKA| Dynamic impedance(3) 0.25 0.4 Ω (see Figure 1) (1) Full temperature range is –40°C to 125°C. (2) The deviation parameters VREF(dev) and Iref(dev) are defined as the differences between the maximum and minimum values obtained over the rated temperature range. The average full-range temperature coefficient of the reference input voltage, αVREF, is defined as: where ΔTA is the rated operating free-air temperature range of the device. αVREF can be positive or negative, depending on whether minimum VREF or maximum VREF, respectively, occurs at the lower temperature. (3) The dynamic impedance is defined as: When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is defined as: 4 Submit Documentation Feedback Copyright © 2008–2011, Texas Instruments Incorporated Product Folder Link(s): TLVH431A-Q1 TLVH431B-Q1 |
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