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TL432AQDBZT Datasheet(PDF) 11 Page - Texas Instruments |
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TL432AQDBZT Datasheet(HTML) 11 Page - Texas Instruments |
11 / 76 page where: D TA is the rated operating temperature range of the device. Maximum V ref Minimum V ref ∆TA VI(dev) a V ref ppm °C V I(dev) V at 25 C ref ° × 10 6 T A ( ( = ( ( ∆I KA ∆V KA |z | = KA ∆I ∆V |z'| = R2 R1 |z | KA (1 + ( (2) 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 given by: which is approximately equal to . TL431, TL431A, TL431B TL432, TL432A, TL432B www.ti.com SLVS543K – AUGUST 2004 – REVISED JUNE 2010 ELECTRICAL CHARACTERISTICS over recommended operating conditions, TA = 25°C (unless otherwise noted) TL431C, TL432C PARAMETER TEST CIRCUIT TEST CONDITIONS UNIT MIN TYP MAX Vref Reference voltage Figure 1 VKA = Vref, IKA = 10 mA 2440 2495 2550 mV SOT23-3 and TL432 Deviation of reference input VKA = Vref, 6 16 devices VI(dev) voltage over full temperature Figure 1 IKA = 10 mA, mV range(1) TA = 0°C to 70°C All other devices 4 25 Ratio of change in reference ΔVKA = 10 V − Vref -1.4 -2.7 ΔVref / voltage to the change in Figure 2 IKA = 10 mA mV/V ΔVKA ΔVKA = 36 V − 10 V -1 -2 cathode voltage Iref Reference input current Figure 2 IKA = 10 mA, R1 = 10 kΩ, R2 = ∞ 2 4 µA Deviation of reference input IKA = 10 mA, R1 = 10 kΩ, R2 = ∞, II(dev) current over full temperature Figure 2 0.4 1.2 µA TA = 0°C to 70°C range(1) Minimum cathode current for Imin Figure 1 VKA = Vref 0.4 1 mA regulation Ioff Off-state cathode current Figure 3 VKA = 36 V, Vref = 0 0.1 1 µA |zKA| Dynamic impedance(2) Figure 1 VKA = Vref, f ≤ 1 kHz, IKA = 1 mA to 100 mA 0.2 0.5 Ω (1) 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 aVref is defined as: aVref is positive or negative, depending on whether minimum Vref or maximum Vref, respectively, occurs at the lower temperature. Copyright © 2004–2010, Texas Instruments Incorporated Submit Documentation Feedback 11 Product Folder Link(s): TL431 TL431A TL431B TL432 TL432A TL432B |
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