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TLVH431AQDBZRG4 Datasheet(PDF) 7 Page - Texas Instruments |
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TLVH431AQDBZRG4 Datasheet(HTML) 7 Page - Texas Instruments |
7 / 50 page ka ka V z z I R1 1 R2 D D + ¢ = » ´ æ ö ç ÷ è ø KA K ka V z I D D = ( ) REF(dev ) 6 REF A REF A V 10 V T 25 C ppm V C T ´ = ° a = ° D æ ö ç ÷ æ ö è ø ç ÷ è ø DVREF DVKA TLVH431, TLVH431A, TLVH431B TLVH432, TLVH432A, TLVH432B www.ti.com SLVS555J – NOVEMBER 2004 – REVISED JANUARY 2015 7.7 TLVH43xB Electrical Characteristics at 25°C free-air temperature (unless otherwise noted) TLVH431B TLVH432B PARAMETER TEST CONDITIONS UNIT MIN TYP MAX TA = 25°C 1.234 1.24 1.246 TLVH431BC 1.227 1.253 VKA = VREF, VREF Reference voltage V TA = full range, IK = 10 mA TLVH431BI 1.224 1.259 See Figure 18(1) TLVH431BQ 1.221 1.265 TLVH431BC 4 12 VREF deviation over full VREF(dev) VKA = VREF, IK = 10 mA, See Figure 18 (1) TLVH431BI 6 20 mV temperature range(2) TLVH431BQ 11 31 Ratio of VREF change to IK = 10 mA, VK = VREF to 18 V, See Figure 19 –1.5 –2.7 mV/V cathode voltage change Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open, See Figure 19 0.1 0.5 μA TLVH431BC 0.05 0.3 Iref deviation over full IK = 10 mA, R1 = 10 kΩ, R2 = open, Iref(dev) TLVH431BI 0.1 0.4 μA temperature range(2) See Figure 19(1) TLVH431BQ 0.15 0.5 Minimum cathode current IK(min) VKA = VREF, See Figure 18 60 100 μA for regulation IK(off) Off-state cathode current VREF = 0, VKA = 18 V, See Figure 20 0.02 0.1 μA |zKA| Dynamic impedance(3) VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 70 mA, See Figure 18 0.25 0.4 Ω (1) Full temperature ranges are –40°C to 125°C for TLVH431Q, –40°C to 85°C for TLVH431I, and 0°C to 70°C for TLVH431C. (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 19), the total dynamic impedance of the circuit is defined as: Copyright © 2004–2015, Texas Instruments Incorporated Submit Documentation Feedback 7 Product Folder Links: TLVH431 TLVH431A TLVH431B TLVH432 TLVH432A TLVH432B |
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