L99SM81V

Active

Programmable stepper motor driver for automotive applications with micro-stepping and stall detection

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  • The L99SM81V is an automotive grade integrated driver for bipolar two-phase stepper motors capable of current controlled micro-stepping with programmable amplitude. The device features a 5 V voltage regulator to supply external sensors.

    The integrated Serial Peripheral Interface (SPI) makes it possible to adjust device parameters, control all operating modes and read out diagnostic information. Digital I/Os are also optionally usable for more flexible and reliable application control.

    Key Features

    • AEC-Q100 qualified
    • Stepper motor driver with up to 1.35 A current capability
    • Programmable stepping 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 (whatever programmed full scale amplitude)
    • 4 programmable decay modes:
      • Slow-mode, mixed-mode and 2x automatically selected decay-modes
    • 3x programmable inputs for direct control of step clock, direction, hold and step modes
    • 1x programmable analog output for Tj measurement or band-gap reference
    • 2x programmable digital outputs for internally generated PWM ON duty cycles, error signals, coils voltage measurement synchronization signals
    • 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 (open load, short to battery, short to GND)
    • 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 (typ. 10 µA)
    • Thermal warning and shutdown
    • ST SPI 4.0 interface for control and diagnostics

Recommended for you

Related Applications

Smart Farming

Automotive Motor Control

Body and Convenience

All tools & software

    • Part number
      Status
      Description
      Type
      Supplier

      EVAL-L99SM81VQ

      Active

      L99SM81VQ EVALUATION BOARD

      Automotive IC Eval Boards --

      EVAL-L99SM81VY

      Active

      L99SM81VY EVALUATION BOARD

      Automotive IC Eval Boards --
      EVAL-L99SM81VQ

      Description:

      L99SM81VQ EVALUATION BOARD
      EVAL-L99SM81VY

      Description:

      L99SM81VY EVALUATION BOARD

CAD/EDA Symbols, Footprints and Models

Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L99SM81VQ6
NRND
VFQFPN 6X6 Automotive Ecopack2
L99SM81VQ6TR
Active
VFQFPN 6X6 Automotive Ecopack2
L99SM81VY
NRND
PowerSSO 36 Automotive Ecopack2
L99SM81VYTR
Active
PowerSSO 36 Automotive Ecopack2

L99SM81VQ6

Package:

VFQFPN 6X6

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

VFQFPN 6X6

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99SM81VQ6TR

Package:

VFQFPN 6X6

Material Declaration**:

PDF XML

Marketing Status

Active

Package

VFQFPN 6X6

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99SM81VY

Package:

PowerSSO 36

Material Declaration**:

PDF XML

Marketing Status

NRND

Package

PowerSSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99SM81VYTR

Package:

PowerSSO 36

Material Declaration**:

PDF XML

Marketing Status

Active

Package

PowerSSO 36

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com 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.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L99SM81VY No availability of distributors reported, please contact our sales office
NRND
EAR99 NEC Tube PowerSSO 36 - - -
L99SM81VYTR Available at 2 distributors

Distributor availability ofL99SM81VYTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 92 1 Order Now
Farnell Element14 EUROPE 180 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

92

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

180

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

Active
EAR99 NEC Tape And Reel PowerSSO 36 - - - 1.9592 / 1k
L99SM81VQ6TR Available at 3 distributors

Distributor availability ofL99SM81VQ6TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 100 1 Order Now
MOUSER WORLDWIDE 2278 1 Order Now
Farnell Element14 EUROPE 80 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2278

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

80

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

Buy Direct
Active
EAR99 NEC Tape And Reel VFQFPN 6X6 - - THAILAND 1.9175 / 1k
L99SM81VQ6 No availability of distributors reported, please contact our sales office
NRND
EAR99 NEC Tray VFQFPN 6X6 - - -

L99SM81VY

Marketing Status

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tube

Package

PowerSSO 36

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

Country of Origin

-

L99SM81VYTR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.9592 / 1k

Distributor availability ofL99SM81VYTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 92 1 Order Now
Farnell Element14 EUROPE 180 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

92

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

180

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

PowerSSO 36

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.9592 / 1k

Country of Origin

-

L99SM81VQ6TR

Marketing Status

Active

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

1.9175 / 1k

Distributor availability ofL99SM81VQ6TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 100 1 Order Now
MOUSER WORLDWIDE 2278 1 Order Now
Farnell Element14 EUROPE 80 1 Order Now

Distributor reported inventory date: 2020-10-23

Distributor Name

DIGIKEY

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2278

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

80

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2020-10-23

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

VFQFPN 6X6

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

1.9175 / 1k

Country of Origin

THAILAND

L99SM81VQ6

Marketing Status

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tray

Package

VFQFPN 6X6

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

Country of Origin

-

(*) 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