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, as well as validating and testing their design

implementation to confirm system functionality.

8.1 Application Information

The following sections discuss the design of the external components to complete the power supply design for

several input and output voltage options by using typical applications as a reference.

8.2 Typical Application

VIN

1.8V to 5.5V

GND

EN

VIN

VSET

SW

VOS

CIN =

4.7 F

COUT =

10µF

L = 1µH

VOUT

0.4V to 3.6V

RSET

Figure 8-1. TPS62843 Typical Application Circuit

8.2.1 Design Requirements

Table 8-1 shows the list of components for the application circuit and the characteristic application curves.

Table 8-1. Components for Application Characteristic Curves

Reference

Description

Value

Size Code Inch [metric L × W × T]

Manufacturer

TPS628436,

TPS628437,

TPS628438

275nA-IQ buck converter

[1.05mm × 0.8mm × 0.4mm]

TI

CIN

Ceramic capacitor

GRM155R60J475ME47D

4.7μF

0402 [1.0mm × 0.5mm × 0.5mm]

Murata

L

Inductor DFE201610-1R0M

1μH

0806 [2.0mm × 1.6mm × 1.0mm]

Murata

COUT

Ceramic capacitor

GRM155R60J106ME15D

10μF

0402 [1.0mm × 0.5mm × 0.5mm]

Murata

RSET

See voltage setting table

0402 [1.0mm × 0.5mm × 0.5mm]

8.2.2 Detailed Design Procedure

Follow the passive component selection per the typical application circuit.

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TPS62843

SLVSFU8C – JANUARY 2022 – REVISED JUNE 2024

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