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Description
The A3957SLBTR is an electronic component model designed for driving one winding of a bipolar stepper motor in a microstepping mode. It features continuous output currents of up to ±1.5 A and can operate at voltages up to 50 V. With internal pulse-width modulated (PWM) current control and a four-bit nonlinear digital-to-analog converter, this model allows precise control of the motor current in various microstepping modes such as full-, half-, quarter-, eighth-, or sixteenth-step. Microstepping enhances step resolution, minimizes torque variations, and reduces resonance problems at low speeds.
Furthermore, the A3957SLBTR offers flexible current-decay modes, including slow (recirculating) current decay, fast (regenerative) current decay, and mixed current decay. The mixed mode divides the off time into a period of fast current decay and the remaining fixed off time spent in slow current decay. By selecting a user-selectable current-sensing resistor and reference voltage, digitally choosing the output current ratio, and using different current-decay modes, users have a wide range of motor control options available.
This model also features internal circuit protections such as thermal shutdown with hysteresis, transient-suppression diodes, and crossover current protection. It does not require special power-up sequencing. The A3957SLBTR is available in two power packages: a 16-pin dual-in-line plastic package (suffix 'A') and a 24-lead plastic SOIC with copper heat-sink tabs (suffix 'LB'). The power tab is at ground potential and does not require electrical isolation.
Specifications and features
- ±1.5 A Continuous Output Current
- 50 V Output Voltage Rating
- Internal PWM Current Control
- 4-Bit Non-Linear DAC for 16-Bit Microstepping
- Satlington™ Sink Drivers
- Fast, Mixed Fast/Slow, and Slow Current-Decay Modes
- Internal Transient-Suppression Diodes
- Internal Thermal-Shutdown Circuitry
- Crossover-Current and UVLO ProtectionApplication Scenarios
The A3957SLBTR is suitable for various applications, including but not limited to:
- - Industrial automation
- - Robotics
- - 3D printers
- - CNC machines
Comparison
Advantages- High output current and voltage ratings for reliable motor driving
- Versatile microstepping modes for precise control
- Flexible current-decay modes for customized motor control
- Internal circuit protections for enhanced reliability and safety
Disadvantages- None identified
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Similar parts: 430483 , Click to view
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Datasheet
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Shopping guide
Delivery period:
- - Will ship out in 2-3 days
- - DHL Express: 3-7 business days
- - DHL eCommerce: 12-22 business days
- - FedEx International Priority: 3-7 business days
- - EMS: 10-15 business days
Shipping fee:
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- - View in your order page
Shipping option:
DHL, FedEx, EMS, SF Express, and Registered Air MailShipping tracking:
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How to Buy:
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Payment:
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Popular parts of the same kind
- Datasheet: Download A3957SLBTR
- Chipdatas Part: CD94-A3957SLBTR
- Warehouse: China, Hong Kong
- Dispatch: Within 24 hours
- Free Shipping: Yes
- Prority Shipping: Yes, 3-5 days
- Last Updated: 2024/06/12 21:03 +0800
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- Full Refund if you don't receive your order
- Full or Partial Refund , If the item is not as described
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The fee is charged according to the rule of PayPal.
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Western Union charge US$0.00 banking fee.
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We recommend to use bank transfer for large orders to save on handling fees.
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