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

Sample & Buy

Part Number
Package
Packing Type
Temperature (°C) Marketing Status
Budgetary Price (US$)*
Quantity
ECCN (US)
More info
Order from Distributors
Order from ST
min
max
L99SM81VY PowerSSO 36 Tube - -
NRND
- - EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office
L99SM81VYTR PowerSSO 36 Tape And Reel - -
Active
1.9592 1000 EAR99
MORE INFO

Country of Origin:

-

Check Availability

Distributor availability ofL99SM81VYTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 100 1 Order Now
Farnell Element14 EUROPE 180 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

180

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-14

L99SM81VQ6TR VFQFPN 6X6 Tape And Reel - -
Active
1.9175 1000 EAR99
MORE INFO

Country of Origin:

MALAYSIA

Check Availability

Distributor availability ofL99SM81VQ6TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 200 1 Order Now
MOUSER WORLDWIDE 2281 1 Order Now
Farnell Element14 EUROPE 86 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

200

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2281

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

86

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-14

Buy now
L99SM81VQ6 VFQFPN 6X6 Tray - -
Active
- - EAR99
MORE INFO

Country of Origin:

-

No availability of distributors reported, please contact our sales office

L99SM81VY

Package

PowerSSO 36

Packing Type

Tube

Unit Price (US$)

*

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

NRND

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

Country of Origin

-

L99SM81VYTR

Package

PowerSSO 36

Packing Type

Tape And Reel

Unit Price (US$)

1.9592*

Distributor availability ofL99SM81VYTR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 100 1 Order Now
Farnell Element14 EUROPE 180 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

100

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

180

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-14

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

1.9592

Quantity

1000

ECCN (US)

EAR99

Country of Origin

-

L99SM81VQ6TR

Package

VFQFPN 6X6

Packing Type

Tape And Reel

Unit Price (US$)

1.9175*

Distributor availability ofL99SM81VQ6TR

Distributor Name
Region Stock Min. Order Third party link
DIGIKEY WORLDWIDE 200 1 Order Now
MOUSER WORLDWIDE 2281 1 Order Now
Farnell Element14 EUROPE 86 1 Order Now

Distributor reported inventory date: 2019-11-14

Distributor Name

DIGIKEY

Stock

200

Min.Order

1

Region

WORLDWIDE Order Now

MOUSER

Stock

2281

Min.Order

1

Region

WORLDWIDE Order Now

Farnell Element14

Stock

86

Min.Order

1

Region

EUROPE Order Now

Distributor reported inventory date: 2019-11-14

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

1.9175

Quantity

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

L99SM81VQ6

Package

VFQFPN 6X6

Packing Type

Tray

Unit Price (US$)

*

Operating Temperature (°C)

(min)

-

(max)

-

Marketing Status

Active

Unit Price (US$)

-

Quantity

-

ECCN (US)

EAR99

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

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Technical Documentation

    • Description Version Size Action
      DS10922
      Programmable stepper motor driver for automotive applications with micro-stepping and stall detection
      4.0
      3.25 MB
      PDF
      DS10922

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

    • Description Version Size Action
      AN5083
      L99SM81V Stepper Motor Driver
      2.0
      511.94 KB
      PDF
      AN5083

      L99SM81V Stepper Motor Driver

Publications and Collaterals

    • Description Version Size Action
      L99SM81V - Automotive Stepper Motor Driver 1.0
      921.5 KB
      PDF

      L99SM81V - Automotive Stepper Motor Driver

    • Description Version Size Action
      Smart power solutions for car body applications 4.0
      3.38 MB
      PDF

      Smart power solutions for car body applications

    • Description Version Size Action
      ST’s solutions for automotive seating systems 1.0
      1.3 MB
      PDF

      ST’s solutions for automotive seating systems

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L99SM81VQ6
Active
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

Active

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.