VIN

EN

RESET

VCC

SYNC

FPWM

AGND

PGND

SW

CBOOT

FB

BIAS

LM53603

L

3x 10µF

3x 22µF

4.7 µH

0.47 µF

0.1 µF

3 Ÿ

3.3 µF

100 kŸ

11 kŸ

12V to 36V

10V @ 3A

47 pF

10nF

Copyright © 2016, Texas Instruments Incorporated

28

LM53602, LM53603

SNVSAR0 – NOVEMBER 2016

www.ti.com

Product Folder Links: LM53602 LM53603

Submit Documentation Feedback

Copyright © 2016, Texas Instruments Incorporated

9.3 Typical Adjustable Industrial Application Circuit

Figure 45 shows a typical example of a design with an output voltage of 10 V; while Table 7 gives typical design

parameters. See Detailed Design Procedure for the design procedure.

Figure 45. Typical Adjustable Output Industrial Power Supply Schematic

CD/DVD/Blu-ray Disc™ Motor Drive Applications

9.3.1 Design Parameters for Typical Adjustable Output Industrial Power Supply

There are a few design parameters to take into account. Most of those choices decide which version of the

device to use. The desired output current steers the designer toward a LM53602 type or LM53603 type part.

Most but not all parameters are independent of the of the IC choice. The output filter components (inductor and

output capacitors) might vary with the choice of output voltage, especially for output voltages higher than 5 V.

Refer to Detailed Design Procedure for details on choosing the components for the application.

Table 7. Design Parameters

DESIGN PARAMETER

EXAMPLE VALUE

Input Voltage

12 V

Output Voltage

10 V

Maximum Output Current

3 A

9.4 Do's and Don't's

•

Don't: Exceed the Absolute Maximum Ratings.

•

Don't: Exceed the ESD Ratings.

•

Don't: Exceed the Recommended Operating Conditions.

•

Don't: Allow the EN, FPWM or SYNC input to float.

•

Don't: Allow the output voltage to exceed the input voltage, nor go below ground.

•

Don't: Use the thermal data given in the Thermal Information table to design your application.

•

Do: Follow all of the guidelines and suggestions found in this data sheet, before committing your design to

production. TI Application Engineers are ready to help critique your design and PCB layout to help make your

project a success.

•

Do: Refer to the helpful documents found in Layout Guidelines and Ground and Thermal Plane

Considerations.