L99SM81V Overview
The L99SM81V is an automotive grade integrated driver for bipolar two-phase stepper motors capable of current controlled microstepping with programmable amplitude.
L99SM81V Key Features
- AEC-Q100 qualified
- Stepper motor driver with up to 1.35 A
- Programmable Step mode
- 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
- 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
- Programmable MOSFETs switching speed: four options for EMC and power dissipation trade-off optimization