Description:

The L6208 device is a DMOS fully integratedstepper motor driver with non-dissipativeovercurrent protection, realized in BCDtechnology, which combines isolated DMOSpower transistors with CMOS and bipolar circuitson the same chip. The device includes all thecircuitry needed to drive a two phase bipolarstepper motor including: a dual DMOS full bridge,the constant off time PWM current controller thatperforms the chopping regulation and the phasesequence generator, that generates the steppingsequence. Available in PowerDIP24 (20 + 2 + 2),PowerSO36 and SO24 (20 + 2 + 2) packages, theL6208 device features a non-dissipativeovercurrent protection on the high-side PowerMOSFETs and thermal shutdown.

Features:

 Operating supply voltage from 8 to 52 V

 5.6 A output peak current (2.8 A RMS)

 RDS(ON) 0.3  typ. value at Tj = 25 °C

 Operating frequency up to 100 KHz

 Non-dissipative overcurrent protection

 Dual independent constant tOFF PWM currentcontrollers

 Fast/slow decay mode selection

 Fast decay quasi-synchronous rectification

 Decoding logic for stepper motor full and halfstep drive

 Cross conduction protection

 Thermal shutdown

 Undervoltage lockout

 Integrated fast freewheeling diodes

Applications:

 Bipolar stepper motor