FAN8742 データシートの表示（PDF） - Fairchild Semiconductor

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FAN8742

Spindle Motor and 6-CH Driver [Spindle(PWM), Sled 2-CH(PWM) 4-CH(Linear)]

Fairchild Semiconductor 

Internal Block Diagram(Pins numbered according to the FAN8741MTF--Leadframe exposed to the bottom)

MUTE1 22

MUTE2 23

SVCC1 52

DGND 56

VDD 48

VCP 55

CP2 54

CP1 53

IN3 47

IN4 46

PVCC3 42

Mute Selection

&Spindle brake sel.

VCP

OSC

DO4− 44

DO4+ 43

PGND5 45

PVCC2 31

DO3− 41

DO3+ 40

PVCC1 32

DO2− 39

DO2+ 38

BTL

driver

BTL

driver

10k

20k

BTL driver

DO1− 37

DO1+ 36

PGND4 35

IN1 34

IN2 33

BTL

driver

TSD

LPF

PWM Control

OSC

REF

LPF

PWM Control

OSC

LPF

Reverse Detect

50 DIR

51 FG

2 HU+

3 HU−

4 HV+

5 HV−

6 HW+

7 HW−

Hall bias 8 VH

1 VM1

15 RSP2

VCP

11 RSP1

10 U

12 V

14 W

13 PGND2

9 PGND1

49 SPIN

21 REF

26 VM2

VCP

24 RSL1

4

H

16 SL1+

bridge 17 SL1−

20 PGND3

25 RSL2

VCP

10k

10k

PWM Control

IOMAX

Flip Drive

Flop Logic

OSC

H-bridge

18 SL2+

19 SL2−

29 SLIN2

30 SLIN1

27 SVCC2

28 SGND

2

FAN8741/FAN8742 Rev. 1.0.1

www.fairchildsemi.com

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