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TLVH431BIDBZRG4 Datasheet(PDF) 10 Page - Texas Instruments |
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TLVH431BIDBZRG4 Datasheet(HTML) 10 Page - Texas Instruments |
10 / 53 page a V REF ppm oC + V REF(dev) V REF (TA +25 oC) 106 D T A z KA + ∆V KA ∆I K z KA + ∆V ∆I [ z KA 1 ) R1 R2 DVREF DVKA TLVH431, TLVH431A, TLVH431B TLVH432, TLVH432A, TLVH432B SLVS555I – NOVEMBER 2004 – REVISED SEPTEMBER 2009....................................................................................................................................... www.ti.com 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 1 (1) TLVH431BQ 1.221 1.265 TLVH431BC 4 12 VREF deviation over full VREF(dev) VKA = VREF, IK = 10 mA, See Figure 1 (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 2 –1.5 –2.7 mV/V cathode voltage change Iref Reference terminal current IK = 10 mA, R1 = 10 kΩ, R2 = open, See Figure 2 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 2 (1) TLVH431BQ 0.15 0.5 Minimum cathode current IK(min) VKA = VREF, See Figure 1 60 100 μA for regulation IK(off) Off-state cathode current VREF = 0, VKA = 18 V, See Figure 3 0.02 0.1 μA |zKA| Dynamic impedance(3) VKA = VREF, f ≤ 1 kHz, IK = 0.1 mA to 70 mA, See Figure 1 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 2 ), the total dynamic impedance of the circuit is defined as: 10 Submit Documentation Feedback Copyright © 2004–2009, Texas Instruments Incorporated Product Folder Link(s): TLVH431 TLVH431A TLVH431B TLVH432 TLVH432A TLVH432B |
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