onsemi LB1847
The LB1847 is a driver IC for stepping motors with PWM current control bipolar drive (fixed OFF time). The current decay pattern can also be selected (SLOW DECAY, FAST DECAY, MIX DECAY) to increase the decay of regenerative current at chopping OFF, thereby improving response characteristics. This is especially useful for carriage and paper feed stepping motors in printers and similar applications where high-precision control and low vibrations are required.| Part No. | LB1847 |
|---|---|
| Datasheet | LB1847 Download |
| Manufacturer |  onsemi |
| Description | Stepping Motor Driver |
| Buy | Stock & Price |
FEATURES
● PWM current control (fixed OFF time)● Load current digital selector (1-2, W1-2, 2W1-2, 4W1-2 phase exciter drive possible)
● Selectable current decay pattern (SLOW DECAY, FAST DECAY, MIX DECAY)
● Simultaneous ON prevention function (feed-through current prevention)
● Noise canceler
● Built-in thermal shutdown circuit
● Built-in logic low-voltage OFF circuit Specifications
ABSOLUTE MAXIMUM RATINGS
at Ta = 25°C Parameter Motor supply voltage Output peek current Output continuous current Logic supply voltage Logic input voltage range Emitter output voltage Allowable power dissipation Operating temperature Storage temperature Symbol VBB IO peak IO max VCC VIN VE Pd max Topr Tstg tW = 20μs Conditions Independent IC With infinitely large heat sink Ratings 50 1.75 1.5 7.0 -0.3 to VCC 1.0 3.0 20 -20 to +85 -55 to +150 Unit V A A A V V W W °C °C Stresses exceedingMAXIMUM RATINGS
may damage the device.MAXIMUM RATINGS
are stress ratings only. Functional operation above the Recommended Operating Conditions is not implied.
