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PDF FAN8728 Data sheet ( Hoja de datos )
| Número de pieza | FAN8728 | |
| Descripción | Spindle + 4-CH Input PWM Motor Drive IC | |
| Fabricantes | Fairchild Semiconductor | |
| Logotipo |  |
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www.fairchildsemi.com
FAN8728
Spindle + 4-CH Input PWM Motor Drive IC
Features
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Description
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48-QFPH-1414
Typical Applications
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Ordering Information
Device
FAN8728
Package
48-QFPH-1414
Operating Temp
−5°C ~ 8°C
©2002 Fairchild Semiconductor Corporation
Rev. 1.0.0
1 page  
Internal Block Diagram
FAN8728
48 47 46 45 44 43
H1+ 1
H1- 2
H2+ 3
H2- 4
H3+ 5
H3- 6
FIN(GND)
FG 7
DIR 8
Absolute Values
Current
Sense Amp
Output
Current Limit
Detection
Logic
Reverse
Rotation
SVCC1 9
VM1
10
Distributor
CS1 11
PGND1
12
Driver
13 14 15 16 17 18
42 41 40 39 38 37
VM4
VM3
VM2
VM2
36 IN4
35 DO4-
34 DO4+
33 DO3-
32 DO3+
31 PGND2
FIN(GND)
30 DO2-
29 DO2+
28 DO1-
27 DO1+
26 OUT1
25 IN1-
19 20 21 22 23 24
5
5 Page 
Calculation of Gain & Torque Limit Current
FAN8728
EC
ECR
-
Gm
+
VM1
Current / Voltage
Convertor
−
Vin
+
Absolute
Values
Negative
Feedback loop
R1 −
+ Driver
+
+
Vmax
−
VM
Max. output current limiting
VM1
IO
RCS
−
VS
Output
Current sense
+
CS1 (Pin 11)
Power
Transistors
U IO
V
W
Commutation
Distributor
H1 H2 H3
8-,99 "
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6-
Gain 0.355
RCS
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3
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Itl[mA] Vmax 350[mV]
RCS
RCS
Application Information
1. Mute Function
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MUTE123,4 ON
Voltage
MUTE123,4 OFFVoltage
2.5[V] above
OPEN or 0.5[V] below
Mute function operation
Normal operation
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11
11 Page | ||
| Páginas | Total 26 Páginas | |
| PDF Descargar | [ Datasheet FAN8728.PDF ] | |
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