RT8805CGQV datasheet(2/18 Pages) RICHTEK

Part #	RT8805CGQV

Description	Two Phase General Purpose PWM Controller

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Manufacturer	RICHTEK [Richtek Technology Corporation]

Direct Link	http://www.richtek.com

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RT8805C

Preliminary

2

DS8805C-03 August 2007

www.richtek.com

Typical Application Circuit

Pin Configurations

(TOP VIEW)

VQFN-24L 4x4

VQFN-16L 3x3

Figure A. Application Circuit for RT8805CxQV (VQFN-16L 3x3)

BOOT1

UGATE1

PHASE1

LGATE1

VCC

RT

IMAX

RT8805CxQV

2

14

5

3

15

16

1

BOOT2

UGATE2

LGATE2

PGOOD

VIN

12

11

10

VOUT

7

6

AGND

COMP

SS

PHASE2

12VCC

4

13

EN

GND

9

8

FB

R1

R2

R3

R4

R5

C1

C2

C3

C4

C5

C6

C7

C8

L1

L2

Q1

Q2

Q3

Q4

3.3VCC

R8

Q5

R9

C9

RPHASE2

RPHASE1

CPHASE2

CPHASE1

R

C

RBOOT1

RUGATE1

RBOOT2

RUGATE2

UGATE1

PHASE2

PGOOD

BOOT2

UGATE2

IMAX

AGND

BOOT1

12

11

10

9

13

14

15

16

1

2

3

4

8

7

6

5

GND

17

PHASE1

UGATE1

BOOT1

AGND

IMAX

NC

UGATE2

BOOT2

PGOOD

PI

FB

COMP

1

2

3

4

5

6

7

21

20

19

18

17

16

15

89

10

12

14

13

24

22

23

11

GND

25

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RT8805CGQV Datasheet(PDF) 2 Page - Richtek Technology Corporation

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