FB

SW

L1

R1

1.0k

LM25010

BST

VCC

C3

C4

D1

VOUT

ISEN

SGND

SS

RTN

0.47 PF

5V

GND

13

11

10

9

6

5

4

2

3

12

0.022 PF

R2

1.0k

R3

1.5

C2

22 PF

C6

0.022 PF

C1

4.4 PF

C5

0.1 PF

RON

200k

100 PH

6 - 40V

Input

VIN

RON/SD

Copyright © 2016, Texas Instruments Incorporated

13

LM25010, LM25010-Q1

www.ti.com

SNVS419E – DECEMBER 2005 – REVISED MAY 2016

Product Folder Links: LM25010 LM25010-Q1

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Copyright © 2005–2016, Texas Instruments Incorporated

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 LM25010 is a non-synchronous buck regulator converter designed to operate over a wide input voltage and

output current range. Spreadsheet-based calculator tools, available on the TI product website at Quick-Start

Calculator, can be used to design a single output non-synchronous buck converter.

Alternatively, online WEBENCH® software is available to create a complete buck design and generate the bill of

materials, estimated efficiency, solution size, and cost of the complete solution.

8.2 Typical Application

The final circuit is shown in Figure 11, and its performance is shown in Figure 16 and Figure 17. Current limit

measured approximately 1.3 A.

Figure 11. LM25010 Example Circuit

8.2.1 Design Requirements

Table 1 lists the operating parameters for Figure 11.

Table 1. Design Parameters

PARAMETER

EXAMPLE VALUE

Input voltage

6 V to 40 V

Output voltage

5 V

Load current

200 mA to 1 A

Soft-start time

5 ms