Key facts
- Brand
- Allegro
- Model
- A3968SLB
- Category
- Other Electronics
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-03
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Allegro MicroSystems A3968SA/A3968SLB Dual Full-Bridge PWM Motor Driver Datasheet
The A3968SA and A3968SLB are dual full-bridge PWM motor drivers designed to bidirectionally control two DC motors. Each device includes two H-bridges capable of continuous output currents of +650 mA and operating voltages up to 30 V. Motor winding current is controlled by internal fixed-frequency, pulse-width modulated (PWM) current-control circuitry.
Read onlineAllegro A3968SLB specifications
| Continuous Output Current | +650 mA |
|---|---|
| Output Voltage Rating | 30 V |
| Logic Supply Voltage Range | 4.75 V to 5.5 V |
| PWM RC Frequency | 22.9 kHz to 27.9 kHz |
| Thermal Shutdown Temp. | 165°C |
Source: Allegro MicroSystems A3968SA/A3968SLB Dual Full-Bridge PWM Motor Driver Datasheet
All Allegro A3968SLB documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What is the maximum output voltage rating?
The device supports operating voltages up to 30 V.
From: Allegro MicroSystems A3968SA/A3968SLB Dual Full-Bridge PWM Motor Driver Datasheet
How does the brake mode function?
Brake mode is enabled when a logic low is applied to both INPUT terminals of a bridge, turning off source drivers and turning on sink drivers.
From: Allegro MicroSystems A3968SA/A3968SLB Dual Full-Bridge PWM Motor Driver Datasheet
What is the function of the brake mode?
In brake mode, both source drivers are turned OFF and both sink drivers are turned ON to dynamically brake the motor.
From: Allegro MicroSystems A3968SA/A3968SLB Dual Full-Bridge PWM Motor Driver Datasheet
What happens when a logic high is applied to both INPUTs?
When a logic high is applied to both INPUTs of a bridge, all output drivers are disabled.
From: Allegro MicroSystems A3968SA/A3968SLB Dual Full-Bridge PWM Motor Driver Datasheet