LM76005RNPR datasheet(21/51 Pages) TI2

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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 LM76005 is a step-down DC-DC converter. It is typically used to convert a higher DC voltage to a lower DC

voltage with a maximum output current of 5 A. The following design procedure can be used to select component

values for the LM76005. Alternately, the WEBENCH® software may be used to generate a complete design. The

WEBENCH software uses an iterative design procedure and accesses a comprehensive database of

components when generating a design.

8.2 Typical Applications

The LM76005 only requires a few external components to convert from a wide range of supply voltages to output

voltage, as shown in Figure 8-1 :

PVIN

PGND

BOOT

VCC

BIAS

SYNC

PGOOD

SS/TRK

AGND

LM76005

OUT

BOOT

VCC

BIAS

FBT

FBB

Tie BIAS to PGND

when V

OUT < 3.3 V

OUT

Figure 8-1. LM76005 Basic Schematic

The LM76005 also integrates a full list of features to aid system design requirements, such as the following:

• VCC UVLO

• Programmable soft start

• Start-up tracking

• Programmable switching frequency

• Clock synchronization

• Power-good indication

Each system can select the features needed in a specific application. A comprehensive schematic with all

features utilized is shown in Figure 8-2 :

www.ti.com

LM76005

SNVSBK5A – FEBRUARY 2020 – REVISED JULY 2020

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