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TL431LI Fiches technique(PDF) 23 Page - Texas Instruments |
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TL431LI Fiches technique(HTML) 23 Page - Texas Instruments |
23 / 32 page TL43xLIx RS 0.1% IO VI(BATT) I O V ref R S = Copyright © 2017, Texas Instruments Incorporated TL43xLIx IO RCL 0.1% R1 VI(BATT) Iout V ref R CL I KA R1 V I(BATT) I O h FE I KA + + = = Copyright © 2017, Texas Instruments Incorporated 23 TL431LI TL432LI www.ti.com SLVSDQ6 – JULY 2018 Product Folder Links: TL431LI TL432LI Submit Documentation Feedback Copyright © 2018, Texas Instruments Incorporated System Examples (continued) Figure 34. Precision Current Limiter Figure 35. Precision Constant-Current Sink 11 Power Supply Recommendations When using TL43xLI as a Linear Regulator to supply a load, designers 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 13. 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 TL43xLIx, these currents are low. |
Numéro de pièce similaire - TL431LI |
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Description similaire - TL431LI |
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