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L99SM81VQ6TR is an automotive grade integrated driver for bipolar two-phase stepper motors capable of current controlled microstepping with programmable amplitude. The device features a 5 V voltage regulator to supply external sensors.

Features

AEC-Q100 qualified

Stepper motor driver with up to 1.35 A current capability

Programmable Step mode

Full step, Half step, Mini step, 1/8 Micro step, 1/16 Micro step

Current regulation by integrated PWM control with fully integrated current sensing

Equivalent 10 bit resolution on current regulation loop

Two 4-bit programmable full scale current amplitudes: one for RUN and one for HOLD mode

6-bit DAC for reference current generation

Slow-mode, mixed-mode and 2x automatically selected decay-modes

Programmable MOSFETs switching speed: four options for EMC and power dissipation trade-off optimization

PWM frequency wobbling for reduction of conducted EM energy

Outputs protection and diagnosis

Integrated ADC for coil voltage measurement and stall detection

5 V low drop voltage regulator short-circuit protected

Very low current consumption in standby mode

Thermal warning and shutdown

ST SPI 4.1 interface for control and diagnostics

Applications

Bipolar 2 phase stepper motor driver for automotive applications like adaptive front light systems or projectors for head-up displaying

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

  A: You can inquire through the website, or by phone and email.

• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.