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TL431CPWR Datasheet(PDF) 30 Page - Texas Instruments |
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TL431CPWR Datasheet(HTML) 30 Page - Texas Instruments |
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30 / 83 page  11 Power Supply Recommendations When using TL43xx as a Linear Regulator to supply a load, designers will typically use a bypass capacitor on the output/cathode pin. When doing this, be sure that the capacitance is within the stability criteria shown in Figure 7-16 and Figure 7-18. In order to not exceed the maximum cathode current, be sure that the supply voltage is current limited. Also, be sure to limit the current being driven into the Ref pin, as not to exceed it's absolute maximum rating. For applications shunting high currents, pay attention to the cathode and anode trace lengths, adjusting the width of the traces to have the proper current density. 12 Layout 12.1 Layout Guidelines Bypass capacitors should be placed as close to the part as possible. Current-carrying traces need to have widths appropriate for the amount of current they are carrying; in the case of the TL43xx, these currents will be low. 12.2 Layout Example TL432 - DBZ (TOP VIEW) REF 1 CATHODE 2 3 ANODE Rsup Rref Vsup CL Vin GND GND Figure 12-1. DBZ Layout Example TL431, TL432 SLVS543Q – AUGUST 2004 – REVISED JULY 2022 www.ti.com 30 Submit Document Feedback Copyright © 2022 Texas Instruments Incorporated Product Folder Links: TL431 TL432 |
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