3625 AND 3626
POWERHALL®
SENSOR/DRIVERS FOR
BRUSHLESS DC MOTORS
REG.
X
7
GROUND
FUNCTIONAL BLOCK DIAGRAM
TSD
SUPPLY
VS
5
OUT B
4
6
OUTA
+V
8
TACH
OUT
PWM/I O 1
ADJUST
RADJ
Dwg. FP-005-1
2.0
RθJC = 55°C/W
1.5
1.0
0.5
FREE AIR, RθJA = 80°C/W
TRUTH TABLE
Mag. Field
> +BOP
> -BOP
Any
PWM/IOADJ
Open
Open
<0.3 V
OUTA
Low
High
High
OUTB
High
Low
High
0
25
50
75
100
125
150
TEMPERATURE IN °C
Dwg. GP-009-1B
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1988, 1995, Allegro MicroSystems, Inc.