VIN

EN

RESET

VCC

SYNC

FPWM

AGND

PGND

SW

CBOOT

FB

BIAS

LM53603

L

3x 10µF

3x 22µF

2.2 µH

0.47 µF

0.1 µF

3 Ÿ

3.3 µF

6V to 36V

5V or 3.3V

3A

10nF

Copyright © 2016, Texas Instruments Incorporated

18

LM53602, LM53603

SNVSAR0 – NOVEMBER 2016

www.ti.com

Product Folder Links: LM53602 LM53603

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Copyright © 2016, Texas Instruments Incorporated

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 the suitability of components for their purposes. Customers

should validate and test their design implementation to confirm system functionality.

9.1 Application Information

The LM53603 and LM53602 are step-down DC-DC converters, typically used to convert a higher DC voltage to a

lower DC voltage with a maximum output current of either 3 A or 2 A. The following design procedure can be

to generate a complete design. This tool uses an iterative design procedure and has access to a comprehensive

database of components. This allows the tool to create an optimized design and allows the user to experiment

with various design options.

9.2 Typical Applications

9.2.1 Typical and Full-Featured Industrial Application Circuits

Figure 15 shows the minimum required application circuit for the fixed output voltage versions, while Figure 16

shows the connections for complete processor control of the LM53603. See these figures while following the

design procedures. Table 2 provides an example of typical design requirements.

Figure 15. Typical Industrial Power Supply Schematic