RT8805C 데이터 시트보기 (PDF) - Richtek Technology

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RT8805C

Two Phase General Purpose PWM Controller

Richtek Technology 

RT8805C

Pin Configurations

Preliminary

(TOP VIEW)

16 15 14 13

UGATE1 1

BOOT1 2

AGND 3

IMAX 4

GND

17

12 PHASE2

11 UGATE2

10 BOOT2

9 PGOOD

5678

VQFN-16L 3x3

24 23 22 21 20 19

PHASE1 1

18 UGATE2

UGATE1 2

17 BOOT2

BOOT1 3

AGND 4

GND

16 PGOOD

15 PI

IMAX 5

NC 6

14 FB

25 13 COMP

7 8 9 10 11 12

VQFN-24L 4x4

Typical Application Circuit

VIN

3.3VCC

12VCC

R8

RT8805CxQV

9 PGOOD BOOT1 2

RBOOT1

R9

14 VCC

C9

UGATE1 1

C4

RUGATE1

R1

5 RT

PHASE1 16

R2

4 IMAX

3

LGATE1 15

AGND

C1

C2 R3

8

FB

7 COMP

10 RBOOT2

BOOT2

UGATE2 11

C6

RUGATE2

6 SS

PHASE2 12

EN

Q5

C3

GND

13

LGATE2

C5

Q1

L1

RPHASE1

Q2

CPHASE1

Q3

C7

L2

RPHASE2

Q4

CPHASE2

VOUT

C8

R4 R

C

R5

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

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2

DS8805C-03 August 2007

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