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TL1431QD 数据表(PDF) 6 Page - Texas Instruments |
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TL1431QD 数据表(HTML) 6 Page - Texas Instruments |
6 / 18 page TL1431 PRECISION PROGRAMMABLE REFERENCE SLVS062F – DECEMBER 1991 – REVISED JANUARY 2000 6 POST OFFICE BOX 655303 • DALLAS, TEXAS 75265 electrical characteristics at specified free-air temperature, IKA = 10 mA (unless otherwise noted) PARAMETER TEST CONDITIONS TA† TEST TL1431Q TL1431M UNIT PARAMETER TEST CONDITIONS TA† CIRCUIT MIN TYP MAX MIN TYP MAX UNIT Reference 25 °C 2490 2500 2510 2475 2500 2540 VI(ref) Reference input voltage VKA = VI(ref) Full range Figure 1 2470 2530 2460 2550 mV VI(dev) Deviation of reference input voltage over full temperature range‡ VKA = VI(ref) Full range Figure 1 17 55 17 55* mV DV I(ref) DV KA Ratio of change in reference input voltage to the change in cathode voltage ∆VKA = 3 V to 36 V Full range Figure 2 –1.1 –2 –1.1 –2 mV/V Reference 25 °C 1.5 2.5 1.5 2.5 II(ref) Reference input current R1 = 10 k Ω, R2 = ∞ Full range Figure 2 4 5 µA II(dev) Deviation of reference input current over full temperature range‡ R1 = 10 k Ω, R2 = ∞ Full range Figure 2 0.5 2 0.5 3* µA Minimum cathode current for regulation VKA = VI(ref) to 36 V 25 °C Figure 1 0.45 1 0.45 1 mA Off state 25 °C 0.18 0.5 0.18 0.5 Ioff Off-state cathode current VKA = 36 V, VI(ref) = 0 Full range Figure 3 2 2 µA |zKA| Output impedance§ VKA = VI(ref), f ≤ 1 kHz, IKA = 1 mA to 100 mA 25 °C Figure 1 0.2 0.4 0.2 0.4 Ω *On products compliant to MIL-PRF-38535, this parameter is not production tested. † Full range is –40 °C to 125°C for Q-suffix devices, and –55°C to 125°C for M-suffix devices. ‡ 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 a V I(ref) is defined as: where: ∆TA is the rated operating temperature range of the device. Max VI(ref) Min VI(ref) ∆TA VI(dev) a V I(ref) ppm °C + V I(dev) V I(ref) at 25 °C 106 DT A a V I(ref) is positive or negative depending on whether minimum VI(ref) or maximum VI(ref), respectively, occurs at the lower temperature. § The output impedance is defined as: z KA + DV KA DI KA When the device is operating with two external resistors (see Figure 2), the total dynamic impedance of the circuit is given by: |z ′| + DV DI , which is approximately equal to z KA 1 ) R1 R2 . |
类似零件编号 - TL1431QD |
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类似说明 - TL1431QD |
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