A8902CLBA Allegro MicroSystems, A8902CLBA Datasheet - Page 2

• Manufacturer Part Number: A8902CLBA
• Description: 3-PHASE BRUSHLESS DC MOTOR CONTROLLER/DRIVER WITH BACK-EMF SENSING
• Manufacturer: Allegro MicroSystems

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