L6725 demoboard

L6725

20/27

7

L6725 demoboard

7.1

Description

L6725

demoboard realizes in a four layer PCB a step-down DC/DC converter and shows the

operation of the device in a general purpose application. The input voltage can range from 4.5V

to 14V and the output voltage is at 3.3V. The module can deliver an output current in excess of

to 500KHz acting on the EAREF pin.

Figure 13. Demoboard schematic

Table 5.

Demoboard part list

Reference

Value

Manufacturer

Package

Supplier

R1

1k

Ω

Neohm

SMD 0603

IFARCAD

R2

1k

Ω

Neohm

SMD 0603

IFARCAD

R3

4K7

R4

2k7

Neohm

SMD 0603

IFARCAD

R5

0

Ω

Neohm

SMD 0603

IFARCAD

R6

N.C.

Neohm

SMD 0603

IFARCAD

R7

2K

Neohm

SMD 0603

IFARCAD

R8

10

Ω

Neohm

SMD 0603

IFARCAD

R9

1K5

Neohm

SMD 0603

IFARCAD

R10

2.2

Ω

Neohm

SMD 0603

IFARCAD

GOUT

R2

GIN

L1

Q1-3

Q4-6

D3

5

U1

L6725

VIN

VOUT

8

OCH

C11

R9

C9

9

10

6

7

HGATE

PHASE

LGATE

PGND

3

VCC

12

VCC

2

SS

C4

BOOT

D1

11

VCCDR

C10

1

VFB

COMP

R3

R1

C1

C2

C3

R4

R7

4

EAREF

C7

R8

16

15

GND

OCL

R10

R11

C12-C13

C16-C19

C5

R6

R5

C8

J1

R12

C15

EXTREF

J2