LB1945H driver equivalent, pwm current control type stepping motor driver.
* PWM current control (external excitation)
* Load current digital selection (1
–2, W1
–2, and 2 phase excitation drives possible) <.
that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other ap.
Pin name Pin number VBB1 7 VBB2 24 E1 5 E2 23 OUTA 2 OUTA
– 1 OUTB 27 OUTB
– 28 GND 14 S
–GND 15 D
–GND 6 22 CR 21 VREF1 VREF2 PHASE1 PHASE2 ENABLE1 ENABLE2 IA1, IA2 IB1, IB2 VCC 13 16 9 20 .
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