RT8055 查看數據表（PDF） - Richtek Technology

零件编号

产品描述 (功能)

生产厂家

RT8055

3A, 2MHz, Synchronous Step-Down Converter

Richtek Technology 

RT8055

Marking Information

RT8055GQW

JN= : Product Code

JN=YM

DNN

YMDNN : Date Code

RT8055ZQW

JN YM

DNN

JN : Product Code

YMDNN : Date Code

RT8055GSP

RT8055

GSPYMDNN

RT8055GSP : Product Number

YMDNN : Date Code

Typical Application Circuit

L1

VIN

5V

CIN

C1

22µF 0.1µF

2µH

PVDD

LX

RT8055

VDD

R1

75k

ROSC

FB

180k

R2

SHDN/RT COMP

24k

GND

RCOMP

30k

PGND

CCOMP

470pF

VOUT

3.3V/3A

COUT

22µF x 2

VOUT

3.3

2.5

1.8

1.5

1.2

1.0

R1 (kΩ)

75

51

30

21

12

6

Table 1. Recommended Component Selection

R2 (kΩ)

24

RCOMP (kΩ)

30

CCOMP (nF)

0.47

24

27

0.47

24

22

0.47

24

18

0.47

24

15

0.47

24

13

0.47

L1 (μH)

2.2

2.2

2.2

2.2

1.0

1.0

COUT (μF)

22 x 2

22 x 2

22 x 2

22 x 2

22 x 2

22 x 2

Copyright ©2012 Richtek Technology Corporation. All rights reserved.

www.richtek.com

2

is a registered trademark of Richtek Technology Corporation.

DS8055-05 November 2012

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