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TL431BCDM Datenblatt(PDF) 4 Page - Motorola, Inc |
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TL431BCDM Datenblatt(HTML) 4 Page - Motorola, Inc |
4 / 16 page TL431, A, B Series 4 MOTOROLA ANALOG IC DEVICE DATA ELECTRICAL CHARACTERISTICS (TA = 25°C, unless otherwise noted.) Ch i i Sb l TL431AI TL431AC TL431B Characteristic Symbol Min Typ Max Min Typ Max Min Typ Max Unit Reference Input Voltage (Figure 1) Vref V VKA = Vref, IK = 10 mA TA = 25°C 2.47 2.495 2.52 2.47 2.495 2.52 2.483 2.495 2.507 TA = Tlow to Thigh 2.44 – 2.55 2.453 – 2.537 2.475 2.495 2.515 Reference Input Voltage Deviation Over ∆Vref – 7.0 – – 3.0 – – 3.0 – mV Temperature Range (Figure 1, Notes 1, 2) VKA= Vref, IK = 10 mA Ratio of Change in Reference Input Voltage DV ref mV/V to Change in Cathode to Anode Voltage ref DV KA IK = 10 mA (Figure 2), DV KA ∆VKA = 10 V to Vref – –1.4 –2.7 – –1.4 –2.7 – –1.4 –2.7 ∆VKA = 36 V to 10 V – –1.0 –2.0 – –1.0 –2.0 – –1.0 –2.0 Reference Input Current (Figure 2) ∆Iref µA IK = 10 mA, R1 = 10 k, R2 = ∞ TA = 25°C – 1.8 4.0 – 1.8 4.0 – 1.1 2.0 TA = Tlow to Thigh (Note 1) – – 6.5 – – 5.2 – – 4.0 Reference Input Current Deviation Over ∆Iref – 0.8 2.5 – 0.4 1.2 – 0.4 1.2 µA Temperature Range (Figure 2, Note 1) IK = 10 mA, R1 = 10 k, R2 = ∞ Minimum Cathode Current For Regulation Imin – 0.5 1.0 – 0.5 1.0 – 0.5 1.0 mA VKA = Vref (Figure 1) Off–State Cathode Current (Figure 3) Ioff – 260 1000 – 260 1000 – 230 500 nA VKA = 36 V, Vref = 0 V Dynamic Impedance (Figure 1, Note 3) |ZKA| – 0.22 0.5 – 0.22 0.5 – 0.14 0.3 Ω VKA = Vref, ∆IK = 1.0 mA to 100 mA f ≤ 1.0 kHz NOTES: 1. Tlow = –40°C for TL431AIP TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431AIDM, TL431IDM, TL431BIDM =0 °C for TL431ACP, TL431ACLP, TL431CP, TL431CLP, TL431CD, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM, TL431ACDM, TL431BCDM Thigh= +85°C for TL431AIP, TL431AILP, TL431IP, TL431ILP, TL431BID, TL431BIP, TL431BILP, TL431IDM, TL431AIDM, TL431BIDM = +70 °C for TL431ACP, TL431ACLP, TL431CP, TL431ACD, TL431BCD, TL431BCP, TL431BCLP, TL431CDM, TL431ACDM, TL431BCDM 2. The deviation parameter ∆Vref is defined as the difference between the maximum and minimum values obtained over the full operating ambient temperature range that applies. ∆Vref = Vref max –Vref min ∆TA = T2 – T1 T2 Ambient Temperature T1 Vref min Vref max The average temperature coefficient of the reference input voltage, αVref is defined as: V ref ppm _C + D V ref V ref @25 _C X106 D T A + D V ref x106 D T A (V ref @25 _C) αVref can be positive or negative depending on whether Vref Min or Vref Max occurs at the lower ambient temperature. (Refer to Figure 6.) Example : DV ref + 8.0 mV and slope is positive, V ref @25 _C + 2.495 V, DT A + 70 _C a V ref + 0.008 x 106 70 (2.495) + 45.8 ppm _C 3. The dynamic impedance ZKA is defined as |ZKA| + D V KA D I K When the device is programmed with two external resistors, R1 and R2, (refer to Figure 2) the total dynamic impedance of the circuit is defined as: |Z KA | [ |Z KA | 1 ) R1 R2 |
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