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TL1431QPWRG4 Arkusz danych(PDF) 5 Page - Texas Instruments |
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TL1431QPWRG4 Arkusz danych(HTML) 5 Page - Texas Instruments |
5 / 32 page ∆I ∆V |z'| = R2 R1 |z | KA (1 + ( ∆I KA ∆V KA |z | = KA where: ∆TA is the rated operating temperature range of the device. Max VI(ref) Min VI(ref) ˙TA VI(dev) α VI(ref) ppm °C V I(dev) V I(ref) at 25 °C × 10 6 T A ( ( = ( ( ∆V KA ∆V I(ref) (4) The output impedance is defined as: , which is approximately equal to . TL1431 www.ti.com SLVS062M – DECEMBER 1991 – REVISED APRIL 2012 Electrical Characteristics at specified free-air temperature, IKA = 10 mA (unless otherwise noted) TL1431Q TL1431M TEST PARAMETER TEST CONDITIONS TA (1) UNIT CIRCUIT MIN TYP MAX MIN TYP MAX 25°C 2490 2500 2510 2475 2500 2540 VI(ref) Reference input voltage VKA = VI(ref) Figure 1 mV Full 2470 2530 2460 2550 range Deviation of reference Full VI(dev) input voltage over full VKA = VI(ref) Figure 1 17 55 17 55(3) mV range temperature range(2) Ratio of change in reference input voltage Full ΔVKA = 3 V to 36 V Figure 2 –1.1 –2 –1.1 –2 mV/V to the change in range cathode voltage 25°C 1.5 2.5 1.5 2.5 II(ref) Reference input current R1 = 10 k Ω, R2 = ∞ Figure 2 μA Full 4 5 range Deviation of reference Full II(dev) input current over full R1 = 10 k Ω, R2 = ∞ Figure 2 0.5 2 0.5 3(3) μA range temperature range(2) Minimum cathode Imin VKA = VI(ref) 25°C Figure 1 0.45 1 0.45 1 mA current for regulation 25°C 0.18 0.5 0.18 0.5 Off-state cathode Ioff VKA = 36 V, VI(ref) = 0 Figure 3 μA Full current 2 2 range VKA = VI(ref), f ≤ 1 kHz, |zKA| Output impedance(4) 25°C Figure 1 0.2 0.4 0.2 0.4 Ω IKA = 1 mA to 100 mA (1) Full range is –40°C to 125°C for Q-suffix devices and –55°C to 125°C for M-suffix devices. (2) The deviation parameters VI(dev) and II(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 αVI(ref) is defined as: αVI(ref) is positive or negative, depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature. (3) On products compliant to MIL-PRF-38535, this parameter is not production tested. When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by: Copyright © 1991–2012, Texas Instruments Incorporated Submit Documentation Feedback 5 Product Folder Links: TL1431 |
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