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TL431CZF 数据表(PDF) 5 Page - HTC Korea TAEJIN Technology Co. |
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TL431CZF 数据表(HTML) 5 Page - HTC Korea TAEJIN Technology Co. |
5 / 10 page PROGRAMMABLE PRECISION SHUNT REGULATOR TL431Z/AZ/CZ 2009 – Obsolete - 5 - HTC The deviation parameters ΔVREF/ΔT and ΔIREF/ΔT are defined as the differences between the maximum and minimum values obtained over the recommended temperature range. The average full-range temperature coefficient of the reference voltage, αVREF, is defined as : Where : ΔTA is the recommended 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. Example : Maximum VREF=2496mV at 30 , m ℃ aximum VREF=2492mV at 0 , V ℃ REF=2495mV at 25 , ℃ ΔTA=70 for TL431C ℃ Z. C ppm C mV mV a REF V ° ≈ ° × ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ = 23 70 10 2495 4 6 Because minimum VREF occurs at the lower temperature, the coefficient is positive. Calculating Dynamic Impedance The dynamic impedance is defined as : KA KA KA I V Z Δ Δ = When the device is operating with two external resistors, the total dynamic impedance of the circuit is given by : ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ + ≈ Δ Δ = 2 1 1 ' R R Z I V Z KA |
类似零件编号 - TL431CZF |
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类似说明 - TL431CZF |
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