Description
Outputs Disabled
H
L
H
H
L
Forward
H
L
L
L
H
Reverse
L
X
X
L
L
Brake, See Note
X = Irrelevant Z = High Impedance (source and sink both off) NOTE: Includes internal default Vsense level for over-current protection.115 Northeast Cutoff, Box 15036
2
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1994, 2000 Allegro MicroSystems, Inc.A3951SW
3951
FULL-BRIDGE PWM MOTOR DRIVER
LOGIC
VBB
VCC
1 2 3 4 5 6 7 8 9 10 11 12
GROUND OUTB LOAD
SUPPLY LOAD
SUPPLY RE
Features
- I ±2 A Continuous Output Current Rating I 50 V Output Voltage Rating I Internal PWM Current Control I Internal Transient Suppression Diodes I Under-Voltage Lockout I Internal Thermal Shutdown Circuitry I Crossover-Current Protection I Default Brake Current Limit
Always order by complete part number:
Part Number
Package
A3951SB A3951SW
16-Pin DIP 12-Pin Power-Tab SIP
RθJA 43°C/W 36°C/W
RθJT 6.0°C/W 2.0°C/W
3951
FULL-BRIDGE PWM MOTOR DRIVER.