onsemi AMIS-30421
The AMIS−30421 is a micro-stepping stepper motor bridge controller for large current range bipolar applications. The chip interfaces via a SPI interface with an external controller in order to control 2 external power NMOS H−bridges. It has an on-chip voltage regulator, current sensing, self adapting PWM controller and pre-driver with smart slope control switching allowing the part to be EMC compliant with industrial and automotive applications.| Part No. | AMIS-30421 |
|---|---|
| Datasheet | AMIS-30421 Download |
| Manufacturer |  onsemi |
| Description | Micro-Stepping Stepper Motor Bridge Controller |
| Buy | Stock & Price |
FEATURES
● Dual H−Bridge Pre−Drivers for 2−Phase Stepper Motors● Programmable Current via SPI
● On−chip Current Translator
● SPI Interface
● Speed and Load Angle Output
● 8 Step Modes from Full Step up to 64 Micro−Steps
● Current−Sense via Two External Sense Resistors
● PWM Current Control with Automatic Selection of Fast and Slow Decay
● Low EMC PWM with Selectable Voltage Slopes
● Full Output Protection and Diagnosis
● Thermal Warning and Shutdown
● Compatible with 3.3 V Microcontrollers
● Integrated 3.3 V Regulator to Supply External Microcontroller
● Integrated Reset Function to Reset External Microcontroller
● These Devices are Pb−Free and are RoHS Compliant* *For additional information on our Pb−Free strategy and soldering details, please download the ON Semiconductor Soldering and Mounting Techniques Reference Manual, SOLDERRM/D. 1 44 QFN44 CASE 485BY MARKING DIAGRAM 1 AMIS30421 0C421−001 AWLYYWWG A = Assembly Location WL = Wafer Lot YY = Year WW = Work Week G = Pb−Free Package...
