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8902A Datasheet(PDF) 2 Page - Allegro MicroSystems

Part No. 8902A
Description  3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
Download  12 Pages
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Maker  ALLEGRO [Allegro MicroSystems]
Homepage  http://www.allegromicro.com
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8902A Datasheet(HTML) 2 Page - Allegro MicroSystems

 
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8902–A
3-PHASE BRUSHLESS DC
MOTOR CONTROLLER/DRIVER
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
FUNCTIONAL BLOCK DIAGRAM
CURRENT
CONTROL
Dwg. FP-034
22
21
23
17
20
CENTERTAP
10
C WD 3
OSC 16
SECTOR
DATA
14
FILTER
13
C ST
4
C RES
12
BRAKE
11
OUT A
OUT B
OUTC
COMMUTATION
DELAY
C D1
C D2
24
2
WATCHDOG
TIMER
BLANK
FCOM
OUT A
5
OUT B
8
OUTC
9
1
LOAD
SUPPLY
V
BB
CHARGE
PUMP
FREQUENCY-
LOCKED LOOP
SERIAL PORT
MUX
DATA IN
TSD
R
S
15
VDD
LOGIC
SUPPLY
START-UP
OSC.
BOOST
CHARGE
PUMP
BRAKE
18-19
6-7
GROUND
GROUND
50
75
100
125
150
2.5
1.5
1.0
0.5
0
TEMPERATURE in
°C
2.0
25
Dwg. GP-019B
R
= 6
°C/W
θJT
R
= 55
°C/W
θJA
Copyright © 1992, 1995 Allegro MicroSystems, Inc.


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