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A8905CLB データシートの表示(PDF) - Allegro MicroSystems
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A8905CLB
3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
Allegro MicroSystems
A8905CLB Datasheet PDF : 12 Pages
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8905
3-PHASE BRUSHLESS DC
MOTOR CONTROLLER/DRIVER
FUNCTIONAL BLOCK DIAGRAM
OUT
A
OUT
B
OUT
C
CENTERTAP
10
LOGIC
SUPPLY
15
VDD
C
D1
24
C
D2
C
ST BRAKE
2
4
11
BRAKE
FCOM COMMUTATION
DELAY
START-UP
OSC.
BLANK
C
RES
12
BOOST
CHARGE
PUMP
VBB
1
LOAD
SUPPLY
5
OUT A
8
OUT B
9
OUTC
C
WD
3
INDEX
14
OSC
16
FREQUENCY-
LOCKED LOOP
WATCHDOG
TIMER
CHARGE
PUMP
CURRENT
CONTROL
RS
DATA IN
23
SERIAL PORT
MUX
TSD
6-7
GROUND
21
22
20
17
13
FILTER
18-19
GROUND
Dwg. FP-034-1
2.5
R
θ
JT
= 6
°
C/W
2.0
1.5
R
θ
JA
= 55
°
C/W
1.0
0.5
0
25
50
75
100
125
150
TEMPERATURE in
°
C
Dwg. GP-019B
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1998 Allegro MicroSystems, Inc.
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