A4984SLPT
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服務與包裝
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About After Sales Service
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A4984SLPT 數據表
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目前的價格方案正在編制中。請聯絡我們的客戶服務團隊獲取最新的價格資訊。感謝您的理解和支援!
詳細說明
The A4984 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 eighth-step modes. Step modes are selectable by MSx logic inputs. It has an output drive capacity of up to 35 V and ±2 A. The A4984 includes a fixed off-time current regulator which has the ability to operate in Slow or Mixed decay modes.Features and Benefits ▪ Low RDS(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 RDS(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 A4984SLPT?
The A4984SLPT is a microstepping stepper motor driver IC designed by Allegro Microsystems. It is widely used in applications such as 3D printers, CNC machines, and robotic systems for precise control of stepper motors.
How Does A4984SLPT Work?
The A4984SLPT works by converting digital control signals into precise current outputs for stepper motor windings. It utilizes microstepping technology to divide each full step into smaller, more incremental steps, allowing for smoother and more accurate motor movements. The driver also incorporates protection features to ensure safe and reliable motor operation.
How Many Pins does A4984SLPT have and What are the Functions of the Pinout Configuration?
The A4984SLPT is housed in a 28-lead TSSOP (Thin Shrink Small Outline Package) package. The pinout configuration includes:
- VMOT: Motor power supply pin.
- VDD: Digital logic power supply pin.
- GND: Ground pin.
- REF: Reference voltage input pin for setting the current limit.
- DIR, /DIR: Direction control input pins.
- STEP, /STEP: Step control input pins.
- MODE0, MODE1, MODE2: Microstepping mode selection pins.
- nSLEEP: Sleep mode enable input pin.
- nFAULT: Fault condition output pin.
- OUT1A, OUT1B, OUT2A, OUT2B: H-bridge output pins for motor connections.
What are the Pros and Cons of A4984SLPT?
Pros:
- Microstepping: Allows for smoother and more precise motor control compared to full-step drivers.
- Current Limiting: Features a built-in current limiting function to protect the motor and driver from overcurrent conditions.
- Compact Package: The 28-lead TSSOP package offers a space-efficient solution for stepper motor control.
- Direction and Step Control: Provides simple digital control interfaces for motor movement.
- Thermal Shutdown and Overtemperature Protection: Includes thermal protection features to prevent overheating.
Cons:
- Complexity: Requires an understanding of stepper motor control principles and microstepping technology for optimal use.
- External Components: May require additional external components such as capacitors and resistors for specific motor applications.
- Heat Dissipation: Proper heat sinking may be necessary to manage the driver's thermal dissipation.
Are There Any Equivalents/Alternatives to A4984SLPT for Recommendation?
- The DRV8825 from Texas Instruments is a popular alternative microstepping motor driver with similar features.
- Alternatives to the A4984SLPT include the TMC2100 from Trinamic and the L6470 from STMicroelectronics.
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