GENERAL DESCRIPTION
STA7120MC Series Rev.4.1 Thank you for your long years of patronage for each series of our unipolar 2-phase stepping motor driver ICs. The STA7120MC series is our latest release. 2. FEATURES AND BENEFITS
(1) Load (motor supply) voltages, VM: 35 V (max.), 0 to 33 V normal operating range (2) Main power supply voltages, VBB: 46 V (max.), 10 to 44 V normal operating range (3) Maximum output currents, IO(max): 2.0 A, 3.0 A (4) Stepping control for phase input (5) Built-in “sense resistor” detects motor current (6) All variants are pin-compatible for enhanced design flexibility s (7) ZIP type 18-pin molded package (STA package) n (8) Self-excitation PWM current control with fixed OFF-time: tOFF = 12 µs (typ.) ig (9) Built-in synchronous rectifying circuit reduces power dissipation at PWM-OFF s (10) Synchronous PWM chopping function prevents motor noise in the Hold mode e (11) The Standby mode to reduce IC input current in stand-by state D (12) Built-in protection circuitry against motor coil opens/shorts and thermal shutdown protection (13) Externally-adjustable blanking time (Minimum ON-time): 3.0 µs, 5.0 µs New 3.
Sanken
