FAN8728 datasheet(4/26 Pages) FAIRCHILD

Part #	FAN8728

Description	Spindle 4-CH Input PWM Motor Drive IC

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Manufacturer	FAIRCHILD [Fairchild Semiconductor]

Direct Link	http://www.fairchildsemi.com

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4 / 26 page

FAN8728

4

Pin Definitions (Continued)

Pin Number

Pin Name

I/O

Pin Function Descrition

34

DO4+

O

BTL Drive 4 Output(+)

35

DO4-

O

BTL Drive 4 Output(-)

36

IN4

I

BTL CH4 Input

37

VREF4

I

BTL CH4 Reference

38

VM4

-

BTL CH4 Motor Supply

39

VM3

-

BTL CH3 Motor Supply

40

SVCC2

-

BTL Signal VCC

41

VREF123

I

BTL CH1,2,3 Rference

42

MUTE123

I

BTL CH1,2,3 Mute

43

MUTE4

I

BTL CH4 Mute

44

SS

I

Spindle Start/Stop

45

OUTS

O

Opamp Spindle Output

46

INS-

I

Opamp Spindle Input(-)

47

INS+

I

Opamp Spindle Input(+)

48

PC1

I

Phase Compesation Cap.

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