DMOS driver for bipolar stepper motor

The L6208Q device is a DMOS fully integrated stepper motor driver with non-dissipative overcurrent protection, realized in BCDmultipower technology, which combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a two-phase bipolar stepper motor including: a dual DMOS full bridge, the constant OFF time PWM current controller that performs the chopping regulation, and the phase sequence generator that generates the stepping sequence. Available in a VFQFPN48 7 x 7 mm package, the L6208Q features a non-dissipative overcurrent protection on the high-side Power MOSFETs and thermal shutdown.

Key Features

  • Operating supply voltage from 8 to 52 V
  • 5.6 A output peak current
  • RDS(on) 0.3 Ω typ. value at Tj = 25 °C
  • Operating frequency up to 100 kHz
  • Non-dissipative overcurrent protection
  • Dual independent constant tOFF PWM current controllers
  • Fast/slow decay synchronous rectification
  • Fast decay quasi-synchronous rectification
  • Decoding logic for stepper motor full and half step drive
  • Cross conduction protection
  • Thermal shutdown
  • Undervoltage lockout
  • Integrated fast freewheeling diodes


Technical Documentation

Product Specifications
Description Version Size
DS7176 DS7176: DMOS driver for bipolar stepper motor 4.0 823 KB
Application Notes
Description Version Size
AN1495 AN1495: Microstepping stepper motor drive using peak detecting current control 3.2 708 KB
Design Notes & Tips
Description Version Size
DT0056 DT0056: Planning for easy troubleshooting with your L647x, L648x, or PowerStep01 design 2.0 172 KB

Presentations & Training Material

Description Version Size
An introduction to electric motors 1.0 2 MB

Publications and Collaterals

Selection Guides
Description Version Size
STSPIN motor drivers 11.2017 1 MB
Description Version Size
Motor Control Reference Guide 15.10 2 MB
Products and solutions for Smart industry 2.0 5 MB

Tools and Software

Evaluation Tools
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Sample & Buy

Part Number Marketing Status Quantity Unit Price (US$) * Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L6208QTR Active 1000 2.298 VFQFPN 48 7x7x1.0 Tape And Reel -40 150 NEC EAR99 PHILIPPINES MORE INFO No availability reported, please contact our Sales office

(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L6208QTR ActiveVFQFPN 48 7x7x1.0IndustrialEcopack2
L6208Q ActiveVFQFPN 48 7x7x1.0IndustrialEcopack2

(**) The Material Declaration forms available on may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.