A8905CLB View Datasheet(PDF) - Allegro MicroSystems
Part Name
Description
MFG CO.
'A8905CLB' PDF : 12 Pages View PDF
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
RθJT = 6°C/W
2.0
1.5
R θJA = 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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