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TPS62171QDSGRQ1 Datasheet(PDF) 11 Page - Texas Instruments |
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TPS62171QDSGRQ1 Datasheet(HTML) 11 Page - Texas Instruments |
11 / 33 page 22uF 3.3V / 0.5A 10uF 2.2µH VIN TPS62170-Q1 470k 150k VIN EN AGND PGND SW VOS PG FB 100k Copyright © 2016, Texas Instruments Incorporated 11 TPS62170-Q1, TPS62171-Q1, TPS62172-Q1 www.ti.com SLVSCK7A – DECEMBER 2014 – REVISED SEPTEMBER 2016 Product Folder Links: TPS62170-Q1 TPS62171-Q1 TPS62172-Q1 Submit Documentation Feedback Copyright © 2014–2016, Texas Instruments Incorporated (1) See Third-Party Products disclaimer. 8 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. 8.1 Application Information The following information is intended to be a guideline through the individual power supply design process. 8.2 Typical TPS62170-Q1 Application space Figure 5. 3.3-V/0.5-A Power Supply 8.2.1 Design Requirements The step-down converter design can be adapted to different output voltage and load current needs by choosing external components appropriate. The following design procedure is adequate for whole VIN, VOUT and load current range of TPS62170-Q1. Using Table 2, the design procedure needs minimum effort. Table 1. List of Components REFERENCE DESCRIPTION MANUFACTURER(1) IC 17-V, 0.5-A step-down converter, WSON TPS62170QDSG, Texas Instruments L1 2.2-µH, 1.4-A, 3 x 2.8 x 1.2 mm VLF3012ST-2R2M1R4, TDK CIN 10-µF, 25-V, ceramic Standard COUT 22-µF, 6.3-V, ceramic Standard R1 Depending on Vout R2 Depending on Vout R3 100-kΩ, chip, 0603, 1/16-W, 1% Standard |
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