LM3102, LM3102-Q1

SNVS515H – SEPTEMBER 2007 – REVISED JUNE 2015

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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 LM3102/-Q1 is a step-down DC-to-DC controller. It is typically used to convert a higher DC voltage to a

lower DC voltage with a maximum output current of 2.5 A. The following design procedure can be used to select

components for the LM3102/-Q1. Alternately, the WEBENCH software may be used to generate complete

designs.

comprehensive databases of components. For more details, go to www.ti.com.

8.2 Typical Application

Figure 24. Typical Application Schematic

8.2.1 Design Requirements

For this example the following application parameters exist.

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Refer to Detailed Design Procedure for more information on operational guidelines and limits.

8.2.2 Detailed Design Procedure

8.2.2.1 Design Steps for the LM3102/-Q1 Application

The LM3102/-Q1 is fully supported by WEBENCH which offers the following: component selection, electrical

simulation, thermal simulation, as well as the build-it prototype board for a reduction in design time. The following

list of steps can be used to manually design the LM3102/-Q1 application.

2. Program turnon time with soft-start capacitor selection.

6. Determine thermal dissipation.

7. Lay out PCB for required thermal performance.

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