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TL4050A10QDCKR Datasheet(PDF) 17 Page - Texas Instruments |
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TL4050A10QDCKR Datasheet(HTML) 17 Page - Texas Instruments |
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17 / 35 page  Cathode and Load Currents R S + V S * VZ (I L ) IZ) (1) TL4050 IZ + IL IL IZ VS VZ RS TL4050 www.ti.com........................................................................................................................................................ SLOS486A – JUNE 2007 – REVISED AUGUST 2009 In a typical shunt-regulator configuration (see Figure 3), an external resistor, RS, is connected between the supply and the cathode of the TL4050. RS must be set properly, as it sets the total current available to supply the load (IL) and bias the TL4050 (IZ). In all cases, IZ must stay within a specified range for proper operation of the reference. Taking into consideration one extreme in the variation of the load and supply voltage (maximum IL and minimum VS), RS must be small enough to supply the minimum IZ required for operation of the regulator, as given by data-sheet parameters. At the other extreme, maximum VS and minimum IL, RS must be large enough to limit IZ to less than its maximum-rated value of 15 mA. RS is calculated according to Equation 1: Figure 3. Shunt Regulator Copyright © 2007–2009, Texas Instruments Incorporated Submit Documentation Feedback 17 Product Folder Link(s): TL4050 |
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