MIKROE-3544 MikroElektronika

STSPIN820 Advanced 256 microsteps integrated motor driver with step-clock and direction interface Datasheet - production data Applications 3D printers Medical equipment Industrial 2D printers Textile and sewing machines CCTV, security and dome cameras ATM and cash handling machines QFN 4 x 4 - 24 lead Office and home automation POS Robotics Features Description Operating voltage from 7 to 45 V Maximum output current 1.5 A rms The STSPIN820 is a stepper motor driver which integrates, in a small QFN 4 x 4 mm package, R HS + LS = 1 typ. DSon both control logic and a low R power stage. th DSon Microstepping up to 1/256 of step The integrated controller implements a PWM Current control with programmable OFF time current control with fixed OFF time and a Current sensing based on external shunt th microstepping resolution up to 1/256 of the step. resistor The device can be forced into a low consumption Full protection set state. Non-dissipative overcurrent protection The device offers a complete set of protection Short-circuit protection features including overcurrent, overtemperature Undervoltage lockout and short-circuit protection. Thermal shutdown Standby low consumption December 2017 DocID031065 Rev 2 1/29 This is information on a product in full production. www.st.comContents STSPIN820 Contents 1 Block diagram 5 2 Electrical data 6 2.1 Absolute maximum ratings . 6 2.2 Recommended operating conditions . 6 2.3 Thermal data . 6 2.4 ESD protection ratings 7 3 Electrical characteristics . 8 4 Pin connection . 10 5 Functional description 12 5.1 Power supply and standby 12 5.2 Microstepping sequencer . 13 5.3 PWM current control . 16 5.4 Overcurrent and short-circuit protections . 19 5.5 Thermal shutdown 22 5.6 ESD protection strategy 23 6 Typical applications 24 7 Layout recommendations 25 8 Package information 26 8.1 TFQFPN 4 x 4 x 1.05- 24L package information . 26 9 Ordering information . 28 10 Revision history . 28 2/29 DocID031065 Rev 2