L99SM81VYTR

Programmable Stepper Motor Driver for Automotive Applications with Micro-Stepping and Stall Detection

Parameters

Operating Range	Automotive
Supply Voltage Min Volt	6.0
Supply Voltage Max Volt	28.0
ECCN US	EAR99
ECCN EU	NEC
Packing Type	Tape And Reel
RoHs compliant	Ecopack2
Grade	Automotive
Package Name	PowerSSO 36

Description

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...
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Key features

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 T_j 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

Out of Stock

Parameters

Operating Range	Automotive
Supply Voltage Min Volt	6.0
Supply Voltage Max Volt	28.0
ECCN US	EAR99
ECCN EU	NEC
Packing Type	Tape And Reel
RoHs compliant	Ecopack2
Grade	Automotive
Package Name	PowerSSO 36

Description

Key features

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 T_j 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