Datasheet Details
- Part number
- A3951
- Manufacturer
- Allegro MicroSystems
- File Size
- 201.73 KB
- Datasheet
- A3951_AllegroMicroSystems.pdf
- Description
- FULL-BRIDGE PWM MOTOR DRIVER
A3951 Description
3951 A3951SB 1 2 3 4 LOGIC GROUND LOGIC SUPPLY PHASE ENABLE 5 6 7 8 VBB VCC 12 11 10 9 GROUND SENSE OUTA LOAD SUPPLY 16 15 14 13 LOAD SUPPLY OUTB GROU.
Outputs Disabled Forward Reverse Brake, See Note
4
H
SUFFIX 'W', R
θJA
H L L X
X H L X
= 38°C/W
H H
2
SUFFIX 'B', R
θJA
= 43°C/W
L
125 150
Dw.
A3951 Features
* I I I I I I I I ± 2 A Continuous Output Current Rating 50 V Output Voltage Rating Internal PWM Current Control Internal Transient Suppression Diodes Under-Voltage Lockout Internal Thermal Shutdown Circuitry Crossover-Current Protection Default Brake Current Limit
Always order by complete part numbe
A3951 Applications
* this has the effect of shorting the motor’s back-EMF voltage, resulting in current flow that brakes the motor dynamically. However, if the back-EMF voltage is large and there is no PWM current limiting, then the load current can increase to a value that approaches a locked rotor condition. To limit
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