LB11946 Datasheet, PDF (12/14 Pages) Sanyo Semicon Device – PWM Current Control Stepping Motor Driver

MIX DECAY
E pin
LB11946
Spike noise
tm
Output
current
tn
CR pin
OUT pin
t on
t off
MD pin
voltage
Switching waveform
MIX DECAY logic setting
serial transmission data (D4, D10) = Low
MD pin: 1.6V to 3.0V at VCC = 5V specification.
1.2V to 2.5V at VCC = 3.3V specification.
t on: Output ON time
t off: Output OFF time
tm: FAST DECAY time at MIX DECAY mode
tn: Noise cancel time
The following operation by comparison between CR voltage and MD pin voltage in turning off time.
CR voltage > MD pin voltage: both sides chopping
CR voltage < MD pin voltage: upper side chopping
No.7946-12/14