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LB11847

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 (feedthrough current prevention)...

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SeekIC No. : 004390951 Detail

LB11847: 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...

LB11847 Data Sheet

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Part Number:
LB11847
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



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 (feedthrough current prevention)
• Noise canceler
• Built-in thermal shutdown circuit
• Built-in logic low-voltage OFF circuit




Pinout

Connection Diagram




Specifications

Parameter Symbol Conditions Ratings Unit
Motor supply voltage VBB 50 V
Peak output current IO peak tw 20 S 1.75 A
Continuous output current IO max 1.5 A
Logic system supply voltage VCC 7.0 V
Logic system supply voltage VIN 0.3 to VCC V
Emitter output voltage VE 1.0 V
Allowable power dissipation (IC internal) Pdmax Ta=25°C 3.0 W
With heat sink 20
Operating temperature Topr -20 to +85
Storage temperature Tstg -55 to +150





Description

The LB11847 is a driver IC for stepping motors with PWM current control bipolar drive (fixed OFF time). A special feature of this IC is that VREF voltage is constant while the current can be set in 15 steps, allowing drive of motors ranging from 1-2 phase exciter types to 4W 1-2 phase exciter types. 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 highprecision control and low vibrations are required.






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