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LMR23630AFDDA Datasheet(PDF) 20 Page - Texas Instruments |
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LMR23630AFDDA Datasheet(HTML) 20 Page - Texas Instruments |
20 / 42 page ![]() BOOT SW L 10 H CBOOT 0.47 F FB VIN VIN 12 V PGND COUT 100 F EN/ SYNC CIN 10 F VCC AGND VOUT 5 V/3 A CVCC 2.2 F RFBT 88.7 NŸ RFBB 22.1 NŸ PAD CFF 47 pF 20 LMR23630 SNVSAH2C – DECEMBER 2015 – REVISED JUNE 2017 www.ti.com Product Folder Links: LMR23630 Submit Documentation Feedback Copyright © 2015–2017, Texas Instruments Incorporated (1) High ESR COUT gives enough phase boost and CFF not needed. 9 Application and Implementation NOTE Information in the following applications sections is not part of the TI component specification, and TI does not warrant its accuracy or completeness. TI’s customers are responsible for determining suitability of components for their purposes. Customers should validate and test their design implementation to confirm system functionality. 9.1 Application Information The LMR23630 is a step-down DC-to-DC regulator. It is typically used to convert a higher DC voltage to a lower DC voltage with a maximum output current of 3 A. The following design procedure can be used to select components for the LMR23630. Alternately, the WEBENCH® software may be used to generate complete designs. When generating a design, the WEBENCH® software utilizes iterative design procedure and accesses comprehensive databases of components. See www.ti.com for more details. 9.2 Typical Applications The LMR23630 only requires a few external components to convert from a wide voltage-range supply to a fixed output voltage. Figure 23 shows a basic schematic. Figure 23. LM23630 Application Circuit The external components must fulfill the needs of the application, but also the stability criteria of the device control loop. Table 2 can be used to simplify the output filter component selection. Table 2. L, COUT, and CFF Typical Values fSW (kHz) VOUT (V) L (µH) COUT (µF) CFF (pF) RFBT (kΩ) 200 3.3 15 300 150 51 5 18 200 100 88.7 12 33 100 See(1) 243 24 33 47 See(1) 510 400 3.3 6.8 150 75 51 5 10 100 47 88.7 12 15 68 See(1) 243 24 15 47 See(1) 510 1000 3.3 3.3 68 39 51 5 4.7 47 25 88.7 2200 3.3 2.2 47 33 51 5 2.2 33 18 88.7 |
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