Dual DMOS Full-Bridge
Microstepping PWM Motor Driver
A3972
Selection Guide
Part Number
Packing
A3972SB-T
15 pieces/tube
Absolute Maximum Ratings
Characteristic
Symbol
VBB
IOUT
VDD
VIN
Notes
Rating
Units
V
Load Supply Voltage
50
Output Current*
±1.5
A
Logic Supply Voltage
Logic Input Voltage Range
Reference Voltage
7.0
V
–0.3 to VDD + 0.3
V
VREF
VS
3
500
V
Sense Voltage (DC)
mV
W
Package Power Dissipation
Operating Ambient Temperature
Junction Temperature
Storage Temperature
PD
3.1
TA
Range S
–20 to 85
150
ºC
ºC
ºC
TJ
T
stg
–55 to 150
*Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed
the specified current rating or a junction temperature of 150°C.
Allegro MicroSystems, LLC
115 Northeast Cutoff
2
Worcester, Massachusetts 01615-0036 U.S.A.
1.508.853.5000; www.allegromicro.com
ALLEGRO [ ALLEGRO MICROSYSTEMS ]
