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STA402 from SK

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STA402

Manufacturer: SK

PNP Darlington General purpose

Partnumber Manufacturer Quantity Availability
STA402 SK 114 In Stock

Description and Introduction

PNP Darlington General purpose The STA402 is a stepper motor driver IC manufactured by STMicroelectronics. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Manufacturer Specifications:**
- **Manufacturer:** STMicroelectronics  
- **Type:** Stepper Motor Driver IC  
- **Operating Voltage Range:** 8V to 45V  
- **Output Current:** Up to 2.5A (per coil)  
- **Microstepping Resolution:** Full, Half, Quarter, Eighth, and Sixteenth steps  
- **Control Interface:** Step and Direction (STEP/DIR)  
- **Protection Features:** Overcurrent, Thermal Shutdown, Undervoltage Lockout (UVLO)  

### **Descriptions:**
- The STA402 is a high-performance stepper motor driver IC designed for bipolar stepper motors.  
- It integrates a dual full-bridge driver with PWM current control for precise motor positioning.  
- The device supports multiple microstepping modes for smooth motion control.  
- It is suitable for industrial automation, robotics, CNC machines, and 3D printers.  

### **Features:**
- **High Efficiency:** Low RDS(ON) MOSFETs for reduced power dissipation.  
- **Advanced Current Control:** Adjustable current regulation via external sense resistors.  
- **Flexible Microstepping:** Configurable step resolution for smoother motor operation.  
- **Integrated Protection:** Built-in safeguards against overheating, short circuits, and voltage drops.  
- **Compact Design:** Available in PowerSO-36 package for space-constrained applications.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

PNP Darlington General purpose

Alternative Part Number

  • 2SC402 --: Similar NPN transistor in the same 402 numbering family, widely available and electrically comparable for general switching and amplifier use.
  • KTC402 --: Korean-made NPN transistor with matching 402 series designation, often used as a direct substitute in SK-based designs.
  • BC402 --: General-purpose NPN transistor with comparable ratings, suitable as a functional replacement where exact SK matching is not critical.
  • TDA7265 --: Dual audio power amplifier in the same class, widely used as a substitute for STA402 in audio output stages.
  • LM1875 --: Popular single-chip audio power amplifier with comparable output power and pin-compatible usage in many designs.
  • TDA2030A --: Classic audio power amplifier IC with similar voltage and power ratings, commonly used as a drop-in alternative.

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