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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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TPS22981RGPR датащи(PDF) 9 Page - Texas Instruments |
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TPS22981RGPR датащи(HTML) 9 Page - Texas Instruments |
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9 / 19 page  LIMMAX SET 41571 I + 0.0161 A R = LIMMIN SET 38429 I – 0.0161 A R = SET LIMTYP 40 k Amps R I W ´ = -25% -20% 15% 10% -5% 0% 5% 10% 15% 20% 25% 0 50 100 150 200 250 300 350 400 450 RSET_S0/S3/V3P3 (k ) Ω min typ max 0 200 400 600 800 1000 1200 1400 1600 1800 0 50 100 150 200 250 300 350 400 450 RSET_S0/S3/V3P3 (kΩ) min typ max TPS22981 www.ti.com SLVSBM6 – DECEMBER 2012 CURRENT LIMIT THRESHOLD Figure 6. ILIM vs RSET for VHV and V3P3 Figure 7. % Variance from min ILIM vs RSET Figure 6 shows the minimum, typical, and maximum current limit for either supply versus its corresponding RSET value. Equation 1 is used to determine the RSET needed to set a typical ILIM for a given supply and mode. Figure 7 shows the percent variation from the typical ILIM value to the minimum and maximum ILIM values. (1) Where RSET = external resistor used to set the current limit for V3P3, VHV (S0), or VHV (S3), and ILIMTYP = typical current limit for V3P3, VHV (S0), or VHV (S3) set by the external RSET resistor. Each resistor is placed between the corresponding ISET pin and GND, as shown in Figure 5, providing a minimum current limit between 100mA and 1.5A. For a given RSET the minimum current limit and the maximum current limit are determined by Equation 2 and Equation 3. (2) (3) MAXIMUM CURRENT LIMIT THRESHOLD The TPS22981 has a maximum current limit ILIMVHVMAX and ILIM3P3MAX. This prevents excessive current in the case of an ISET pin being shorted to ground. Copyright © 2012, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Links: TPS22981 |
Аналогичный номер детали - TPS22981RGPR |
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Аналогичное описание - TPS22981RGPR |
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