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TL432CDBVR 数据表(PDF) 20 Page - Texas Instruments |
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TL432CDBVR 数据表(HTML) 20 Page - Texas Instruments |
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20 / 79 page  7.2 Dynamic Impedance The dynamic impedance is defined as KA KA KA V Z I ' ' . When the device is operating with two external resistors (see Figure 6-13), the total dynamic impedance of the circuit is given by V z' I ' ' , which is approximately equal to KA R1 Z 1 R2 § · ¨ ¸ © ¹ . The VKA of the device can be affected by the dynamic impedance. The device test current Itest for VKA is specified in the Electrical Characteristics. Any deviation from Itest can cause deviation on the output VKA. Figure 7-4 shows the effect of the dynamic impedance on the VKA. Ps 0 VKA (V) Itest IKA(min) IKA Figure 7-4. Dynamic Impedance TL431, TL432 SLVS543S – AUGUST 2004 – REVISED MAY 2024 www.ti.com 20 Submit Document Feedback Copyright © 2024 Texas Instruments Incorporated Product Folder Links: TL431 TL432 |
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