We use cookies to make your experience better. To comply with the new e-Privacy directive, we need to ask for your consent to set the cookies. Learn more.
LSI-LS7290-TS
| Package Type | TSSOP |
|---|---|
| Pin Count | 24 |
Interested in large quantity discount?
Product Information
The LS7290 generates Phase Drive outputs and PWM outputs for controlling two phase Bipolar motors or four phase Unipolar motors, respectively. The LS7290 contains a mode controlled look-up table for generating the motor duty cycle drive sequences. A table pointer is used which is incremented or decremented by a value determined by the operating mode and the direction control. The 8-bit PWM control and the refresh rate are set using an internal oscillator controlled by a crystal or by use of an external input clock. Peak current feedback control using pulse width modulation chopping can be used in full-step or half-step modes. The chopper consists of a voltage comparator, flip-flop and external sense resistor. The VREF voltage sets the peak current in each motor winding. Note: This series has a minimum purchase requirement of 10 pieces, regardless of stock.
- Controls Bipolar and Unipolar Motors
- Cost-Effective Replacement for L297 in Bipolar Applications
- Full, 1/2, 1/4, 1/8, 1/16, 1/32 Step Mode Selected with 3 Mode Inputs
- Direction Control
- PWM Chopper Circuit for Current Control
- 8-bit PWM Resolution
- Two Peak Current Comparators with External Reference Input
- Step Control Frequency and Duty Cycle Controlled by an External Frequency Source or by an Internal Crystal-Controlled Oscillator (Typically 8MHz)
- All inputs and Outputs TTL/CMOS Compatible
- 3V to 5.5V Operation (Vdd - Vss)
- RoHS Compliant
.png)
.png)
User Manual (PDF)
Have questions? Contact us!
Inquiries are answered in the order they are received; typically within 48 hours (M-F). Response time is dependent upon the volume of inquiries and our business schedule.