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LM46002PWPR Datasheet(PDF) 24 Page - Texas Instruments |
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LM46002PWPR Datasheet(HTML) 24 Page - Texas Instruments |
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24 / 52 page  SW VIN PGND CBOOT VCC BIAS SYNC RT ENABLE SS/TRK AGND FB LM46002 VIN COUT CBOOT CIN CVCC VOUT CBIAS RFBT RFBB CFF L PGOOD SW VIN PGND CBOOT VCC BIAS SYNC RT ENABLE SS/TRK AGND FB LM46002 VIN COUT CBOOT CIN CVCC VOUT RFBT RFBB CFF L PGOOD LM46002 SNVSA13B – APRIL 2014 – REVISED SEPTEMBER 2014 www.ti.com 9 Applications 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 LM46002 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 2 A. The following design procedure can be used to select components for the LM46002. 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. Please go to www.ti.com for more details. This section presents a simplified discussion of the design process. 9.2 Typical Applications The LM46002 only requires a few external components to convert from a wide range of supply voltage to output voltage. Figure 44 shows a basic schematic when BIAS is connected to VOUT . This is recommended for VOUT ≥ 3.3 V. For VOUT < 3.3 V, BIAS should be connected to ground, as shown in Figure 45. Figure 44. LM46002 Basic Schematic for Figure 45. LM46002 Basic Schematic for VOUT ≥ 3.3 V, Tie BIAS to VOUT VOUT < 3.3 V, t-Tie BIAS to Ground The LM46002 also integrates a full list of optional features to aid system design requirements, such as precision enable, VCC UVLO, programmable soft-start, output voltage tracking, programmable switching frequency, clock synchronization and power-good indication. Each application can select the features for a more comprehensive design. A schematic with all features utilized is shown in Figure 46. 24 Submit Documentation Feedback Copyright © 2014, Texas Instruments Incorporated Product Folder Links: LM46002 |
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