RT8011 데이터 시트보기 (PDF) - Richtek Technology

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RT8011

2A, 4MHz, Synchronous Step-Down Regulator

Richtek Technology 

RT8011/A

Typical Application Circuit

VIN

2.6V to 5.5V

ROSC

332k

RT8011

1 SHDN/RT

10

COMP

2 SYNC

9

FB

3 GND

4

LX

5 PGND

PGOOD 8

VDD 7

6

PVDD

L1

2.2uH

RCOMP

13k

CCOMP

1000pF

RPGOOD

100k

R2 240k

CIN

R1

510k

22uF

C1

22pF

COUT

22uF

VOUT

2.5V/2A

Figure 1. Typical Application Circuit for RT8011

VIN

2.6V to 5.5V

ROSC

332k

RT8011A

1 SHDN/RT COMP 8

2 GND

3

LX

7

FB

6

VDD

4 PGND

PVDD 5

L1

2.2uH

RCOMP

13k

CCOMP

1000pF

R2 240k

CIN

22uF

R1

510k

COUT

22uF

VOUT

2.5V/2A

Figure 2. Typical Application Circuit for RT8011A

Note : Using all Ceramic Capacitors

Table 1

Component Supplier Series Inductance (uH)

TAIYO YUDEN NR 4018

2.2

Sumida

CDRH4D28

2.2

GOTREND

GTSD53

2.2

ABC

SR0403

2.2

DCR (mΩ)

60

31.3

29

47

Current Rating (mA) Dimensions (mm)

2700

4x4x1.8

2040

4.5x4.5x3

2410

5x5x2.8

2600

4.5x4x3.2

Table 2

Component Supplier

TDK

TDK

TDK

Panasonic

Panasonic

Panasonic

TAIYO YUDEN

TAIYO YUDEN

TAIYO YUDEN

Part No.

C3225X5R0J226M

C3225X5R0J226M

C2012X5R0J106M

ECJ4YB0J226M

ECJ4YB1A226M

ECJ4YB1A106M

LMK325BJ226ML

JMK316BJ226ML

JMK212BJ106ML

Capacitance (uF)

22

22

10

22

22

10

22

22

10

Case Size

1210

1210

0805

1210

1210

1210

1210

1206

0805

www.richtek.com

2

DS8011/A-00 August 2006

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