DMOS driver for 3-phase brushless dc motor

The L6235Q is a DMOS fully integrated 3-phase motor driver with overcurrent protection. Realized in BCDmultipower technology, the device combines isolated DMOS power transistors with CMOS and bipolar circuits on the same chip. The device includes all the circuitry needed to drive a 3-phase BLDC motor including: a 3-phase DMOS bridge, a constant OFF time PWM current controller and the decoding logic for single ended Hall sensors that generates the required sequence for the power stage. Available in QFN48 7x7 package, the L6235Q 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 @ TJ = 25 °C
  • Operating frequency up to 100 kHz
  • Non-dissipative overcurrent protection
  • Diagnostic output
  • Constant tOFF PWM current controller
  • Slow decay synchronous rectification
  • 60° and 120° Hall effect decoding logic
  • Brake function
  • Tacho output for speed loop
  • Cross conduction protection
  • Thermal shutdown
  • Undervoltage lockout
  • Integrated fast freewheeling diodes


Technical Documentation

Product Specifications
Description Version Size
DS7293 DS7293: DMOS driver for three-phase brushless dc motor 2.0 1 MB
Design Notes & Tips
Description Version Size
DT0045 DT0045: Design made easy with DC & BLDC motor driver tools 1.2 400 KB
DT0001 DT0001: Speed control using the L6235 or L6229 with a PWM output from a microcontroller 1.1 124 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
Solution Evaluation Tools
Get Started Support & Community

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
L6235QTR Active 1000 2.052 VFQFPN 48 7x7x1.0 Tape And Reel -40 150 NEC EAR99 PHILIPPINES MORE INFO Get Sample Add to cart DISTRIBUTOR AVAILABILITY

(*) 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**
L6235QTR ActiveVFQFPN 48 7x7x1.0IndustrialEcopack2 0 0
L6235Q ActiveVFQFPN 48 7x7x1.0IndustrialEcopack2 0 0

(**) 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.