ISL854102FRZ-T Просмотр технического описания (PDF) - Renesas Electronics

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Компоненты Описание

производитель

ISL854102FRZ-T

Wide VIN 1.2A Synchronous Buck Regulator

Renesas Electronics 

ISL854102

Typical Application Schematics

1 SS

FS 12

2

SYNC

11

COMP

R2

CFB

CBOOT

100nF

COUT

10µF

VOUT

L1

22µH

CVIN

10µF

3 BOOT

4 VIN

5 PHASE

6

PGND

GND

10

FB

9

VCC

PG

EN

R3

CVCC

1µF

FIGURE 3. INTERNAL DEFAULT PARAMETER SELECTION

CSS

CBOOT

100nF

COUT

10µF

VOUT

L1

22µH

CVIN

10µF

1 SS

2

SYNC

3 BOOT

4 VIN

5 PHASE

6

PGND

GND

FS 12

RFS

11

COMP

10

FB

R2

CFB

9

R3

VCC

CVCC

1µF

PG

EN

RCOMP

CCOMP

VOUT

L1

(V)

(µH)

COUT

(µF)

12

22

2 x 22

5

22

47 + 22

3.3

22

47 + 22

2.5

22

47 + 22

1.8

12

47 + 22

NOTE:

1. Connect FS to VCC.

FN8870 Rev 0.00

July 1, 2016

FIGURE 4. USER PROGRAMMABLE PARAMETER SELECTION

TABLE 1. EXTERNAL COMPONENT SELECTION

R2

R3

CFB

RFS

(kΩ)

(kΩ)

(pF)

(kΩ)

90.9

4.75

22

115

90.9

12.4

27

DNP (Note 1)

90.9

20

27

DNP (Note 1)

90.9

28.7

27

DNP (Note 1)

90.9

45.5

27

DNP (Note 1)

RCOMP

(kΩ)

150

100

100

100

70

CCOMP

(pF)

470

470

470

470

470

Page 4 of 19

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