UDN3625 Allegro MicroSystems, UDN3625 Datasheet - Page 6

• Manufacturer Part Number: UDN3625
• Description: (UDN3625 / UDN3626) POWERHALL SENSOR/DRIVERS FOR BRUSHLESS DC MOTORS
• Manufacturer: Allegro MicroSystems

By accepted magnetic convention, lines of flux emanate from the north pole of a magnet and enter the south pole.
3625
P
SENSOR/DRIVERS FOR
BRUSHLESS DC MOTORS
OWER
AND
H
ALL
3626
®
Dwg. AP-001-1
N
S
+B
at the PWM/l
down. PWM current/speed control can be performed at the PWM/l
from a standard totem-pole logic output with a series Schottky diode
(1N5818,1N5819, or equivalent) or by pulling it low through an open-
collector transistor (no pull-up resistor). PWM/l
than 0.3 V are not recommended and may create an unstable operating
condition.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]
The external overcurrent adjust and the thermal shutdown are commoned
-B
OUT ON/LOW
O
ADJ pin and tieing it to V
B
-B
O P
B = 0 G
CC
will disable the thermal shut-
O
ADJ input voltages greater
+B
OUT ON/LOW
O P
Dwg. GP-008
A
+B
O
ADJ pin