L6728 datasheet(28/32 Pages) STMICROELECTRONICS

28 / 32 page

5A demo board

L6728

28/32

Table 7.

5A demo board - bill of material

13.1

Board description

13.1.1

Power input (Vin)

This is the input voltage for the power conversion. The High-Side drain is connected to this

input. This voltage can range from 1.5V to 12Vbus.

If the voltage is between 4.5V and 12V it can supply also the device (through the Vcc pin)

and in this case the R16 (0Ohm) resistor must be present.

Qty

Reference

Description

Package

Capacitors

C12, C51

MLCC, 10

µF, 16V, X5R

SMD1206

C10

MLCC, 100nF, 16V, X7R

SMD0603

C14, C38

MLCC, 1

µF, 16V, X7R

SMD0805

1C39

MLCC, 22

µF, 6.3V, X5R

SMD1206

C30

330

µF, 6.3V, 6TPF330M9L

SMD7434

C23, C36

MLCC, 6.8nF, X7R

SMD0603

C24

MLCC, 68nF, X7R

C35

MLCC, 220pF, X7R

Resistors

R1, R2, R17

Resistor, 3R3, 1/16W, 1%

SMD0603

R3, R5, R16

Resistor, 0R, 1/8W, 1%

SMD0805

Resistor, 1R8, 1/8W, 1%

R14

Resistor, 15R, 1/8W, 1%

R6, R9

Resistor, 2K2, 1/16W, 1%

SMD0603

R8, R13

Resistor, 3K9, 1/16W, 1%

Resistor, 18K, 1/16W, 1%

R19

Resistor, 22K, 1/16W, 1%

R18

Resistor, 20K, 1/16W, 1%

Inductor

1L1

Inductor, 2,20

µH,

WURTH 744324220LF

Active Components

Diode, BAT54

SOT23

STS9D8NH3LL

SO8

Controller, L6728

DFN10, 3x3mm

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