We're passionate about innovation. Reach out and you'll hear back from an expert shortly.
Form Unavailable
In accordance with your Cookie preferences this form is not currently available. Should you wish to make a submission please allow Performance cookies to run in your browser session. You can access and change your preferences via the Cookie Settings button below or through our Footer link ‘Cookie Notice’ > ‘Cookie Settings’. If you still have issues seeing the form after accepting cookies please try and clear your local cookies and reload the page and accept the Performance cookies again.
Thank you for connecting with us!
One of our solution experts will be in touch with you shortly. Keep reading to learn more about our industry leading solutions.
Close
A3966 Frequently Asked Questions
No. However, you can run in full, half, and modified half-step modes.
No, it is not a drop-in replacement, although the A3966 is an excellent functional replacement.
Package options include a 16-lead batwing SOIC. The 16-pin DIP is no longer available.
Yes. We now have two different applications boards that will help simplify a new design using the A3966. Contact the Applications Group in Worcester for more information.
It is possible. However, there are several considerations, such as optimization of circuit board layout, use of external Schottky diodes in parallel with the internal diodes, use of heat sinks, etc. Please refer to application note numbers 29501.4, "Improving Batwing Power Dissipation", and AN29501.5, "Computing IC Temperature Rise".
30V. This must not be exceeded.
Yes. The following components are required:
RS - the external sense resistor. This should be non-inductive.
RT - the external resistive component needed to set the internal oscillator's frequency.
CT - the external capacitive component needed to set the internal oscillator's frequency.
Decoupling capacitor - logic supply. A 0.01 µF ceramic capacitor is recommended.
Decoupling capacitor - load supply. A 47 µF electrolytic capacitor is recommended.
Thermal shutdown (TSD)
Crossover current protection
Under-voltage lockout (UVLO)
Ground-clamp diodes
Flyback diodes
Yes. Power ground for the sense resistor, Rs, should be connected as close to the device as possible. Also, Rs should be non-inductive, and the circuit board ground run should be as large as physically possible. For further layout consideration, please refer to application note 29501.5A, "Improving Batwing Power Dissipation."
Constant-current. Motor winding current is controlled by internal fixed-frequency, PWM current-control circuitry. This device can also be run in "voltage mode" for DC motor applications.
Use external Schottky diodes in parallel with the internal diodes. Heat sinks are also a possibility. However, Schottky diodes are typically the preferred solution.
