FDS6670AS 데이터 시트보기 (PDF) - Richtek Technology

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FDS6670AS

6A, 24V, 600kHz Step-Down Converter with Synchronous Gate Driver

Richtek Technology 

Typical Application Circuit

For WDFN-14L 4x3 Package

RT8298

VIN

4.5V to 24V

4, 5, 6 VIN

CIN

22µF

RT8298

BOOT 11

CVCC

1µF

12 VCC

SW 8, 9, 10

BG 13

CBOOT

1µF L

2.2µH

Q1

R1

62k

R3

100k

FB 1

Power Good

2 PGOOD

R2

20k

Chip Enable

3 EN/SYNC

GND 14, 15 (Exposed Pad)

VOUT

3.3V

COUT

22µF x 3

For SOP-8 (Exposed Pad) Package

VIN

4.5V to 24V

CIN

22µF

CVCC

1µF

RT8298

8 VIN

BOOT 2

3 VCC

SW 1

BG 4

CBOOT

1µF L

2.2µH

Q1

R1

62k

FB 6

Chip Enable

7 EN/SYNC

GND 5, 9 (Exposed Pad)

R2

20k

VOUT

3.3V

COUT

22µF x 3

Table 1. Recommended Component Selection

VOUT (V)

1.2

1.8

2.5

R1 (kΩ)

62

62

62

R2 (kΩ)

127

50.5

30

L (μH)

1.5

1.5

2.2

COUT (μF)

22μF x 3

22μF x 3

22μF x 3

3.3

62

20

2.2

22μF x 3

5

93

18

2.8

22μF x 3

8

120

13.5

3.6

22μF x 3

Copyright ©2011 Richtek Technology Corporation. All rights reserved.

DS8298-01 November 2011

is a registered trademark of Richtek Technology Corporation.

www.richtek.com

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