Data Sheet 29319.44B 3957 FULL-BRIDGE PWM MICROSTEPPING MOTOR DRIVER The A3957SLB is designed for driving one winding of a bipolar stepper NO 1 NC CONNECT NC 24 NO CONNECT motor in a microstepping mode.
The outputs are rated for continuous output currents to ±1.5 A and operating voltages to 50 V.
Internal pulse-width PFD 2 VBB REF 3 NO CONNECT 4 NC T RC 5 C GROUND 6 U GROUND 7 LOGIC D D 3 8 LOGIC O SUPPLY 9 VCC Y PHASE 10 R L D2 11 P N NO CONNECT 12 NC 23 LOAD SUPPLY 22 O