L6470HTR

L6470HTR is a Fully integrated microstepping motor driver with a motion engine and SPI. The L6470 device realized in analogue mixed signal technology is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping. It integrates a dual low RDS(on) DMOS full bridge with all of the power switches equipped with an accurate on-chip current sensing circuitry suitable for no dissipative current control and overcurrent protection. Thanks to a unique control system, a true 1/128 step resolution is achieved. The digital control core can generate user-defined motion profiles with acceleration, deceleration, speed or target position, easily programmed through a dedicated registers set. A very rich set of protections (thermal, low bus voltage, overcurrent, motor stall) allows the design of a fully protected application, as required by the most demanding motor control applications.

• Operating voltage range from 8 to 45V
• 7.0A out peak current (3.0A r.m.s.)
• Low RDS(on) power MOSFETs, programmable power MOS slew rate
• Programmable speed profile and positioning, two-levels of overtemperature protection
• Sensorless stall detection, SPI interface, low quiescent and standby currents
• Programmable non-dissipative overcurrent protection on high and low-side
• High-side switch on-resistance is 0.37ohm typ at Tj = 25°C, Iout = 3A
• Rise time is 100ns typ at POW-SR = '00', Iout = +1A
• HTSSOP28 package
• Operating junction temperature range from -40 to 150°C

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