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A4982SLPT
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A4982SLPT 數據表
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詳細說明
The A4982 is a complete microstepping motor driver with built-in translator for easy operation. It is designed to operate bipolar stepper motors in full-, half-, quarter-, and sixteenth-step modes, with an output drive capacity of up to 35 V and ±2 A. The A4982 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes. The ET package meets customer requirements for no smoke no fire (NSNF) designs by adding no-connect pins between critical output, sense, and supply pins. So, in the case of a pin-to-adjacent-pin short, the device does not cause smoke or fire. Additionally, the device does not cause smoke or fire when any pin is shorted to ground or left open.Features and Benefits ▪ Low R DS(ON) outputs ▪ Automatic current decay mode detection/selection ▪ Mixed and Slow current decay modes ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO ▪ Crossover-current protection ▪ 3.3 and 5 V compatible logic supply ▪ Thin profile QFN and TSSOP packages ▪ Thermal shutdown circuitry ▪ Short-to-ground protection ▪ Shorted load protection ▪ Low current Sleep mode, <10 μA ▪ No smoke no fire (NSNF) compliance (ET package)
主要特徵
- ▪ Low R
- DS(ON) outputs
- ▪ Automatic current decay mode detection/selection
- ▪ Mixed and Slow current decay modes
- ▪ Synchronous rectification for low power dissipation
- ▪ Internal UVLO
- ▪ Crossover-current protection
- ▪ 3.3 and 5 V compatible logic supply
- ▪ Thin profile QFN and TSSOP packages
- ▪ Thermal shutdown circuitry
- ▪ Short-to-ground protection
- ▪ Shorted load protection
- ▪ Low current Sleep mode, <10 μA
- ▪ No smoke no fire (NSNF) compliance (ET package)
規格
以下是所選零件的基本參數，涉及零件的特性及其所屬類別。
| Manufacturer | ALLEGRO | Product Category ! | Motor Drivers and Controllers |
數據表 PDF
數據表記錄了器件的特性、絕對最大額定值、應用等，這對於作為器件特定應用的整體指南大有裨益。
常見問題解答
What is A4982SLPT?
The A4982SLPT is a microstepping motor driver integrated circuit designed by Allegro Microsystems. It is specifically designed for driving bipolar stepper motors in various applications such as 3D printers, CNC machines, and robotics.
How Does A4982SLPT Work?
The A4982SLPT works by regulating the current flow through the motor windings to achieve precise control of the stepper motor. It utilizes a microstepping technique to provide smooth and accurate motion control, making it suitable for applications requiring precise positioning and motion synchronization.
How Many Pins does A4982SLPT Have and What are the Functions of the Pinout Configuration?
The A4982SLPT is housed in a 28-lead TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:
- VBB: Bootstrap capacitor pin for the high-side gate drive output.
- GND: Ground pin.
- VDD: Logic voltage supply pin.
- CP1, CP2: External capacitance pins for the charge pump.
- OUT 1A, OUT 1B: Output H-Bridge 1 pins.
- OUT 2A, OUT 2B: Output H-Bridge 2 pins.
- ISEN1, ISEN2: Current sense pins for H-Bridge 1 and H-Bridge 2, respectively.
- REF, DECAY, MSEN, RST, STEP, DIR: Control and configuration pins for motor control.
What are the Pros and Cons of A4982SLPT?
Pros:
- Microstepping Control: Provides smooth and precise motion control through microstepping technique.
- Low Power Dissipation: Offers efficient current regulation to minimize power dissipation.
- Thermal Shutdown: Includes thermal shutdown protection for overtemperature conditions.
- Compatible with Various Microcontrollers: Can be easily interfaced with microcontrollers for flexible control.
- Internal PWM Current Control: Features internal pulse-width modulation (PWM) current control for simplified motor driving.
Cons:
- External Components: May require additional external components such as diodes and capacitors for optimal performance and protection.
- Stepper Motor Limitation: Specifically designed for driving bipolar stepper motors and may not be suitable for other types of motors.
- Complex Control Interface: Requires careful consideration of control signals and timing for proper motor operation.
Are There Any Equivalents/Alternatives to A4982SLPT for Recommendation?
- The DRV8825 from Texas Instruments is a similar microstepping motor driver with adjustable current control.
- Alternatives to the A4982SLPT include the TMC2130 from Trinamic and the L6470 from STMicroelectronics.
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