IC Phoenix logo

Home ›  S  › S99 > STA473

STA473 from

Fast Delivery, Competitive Price @IC-phoenix

If you need more electronic components or better pricing, we welcome any inquiry.

STA473

NPN Darlington General purpose

Partnumber Manufacturer Quantity Availability
STA473 200 In Stock

Description and Introduction

NPN Darlington General purpose The STA473 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  
- **Part Number:** STA473  
- **Type:** Stepper Motor Driver IC  
- **Package:** PowerSO-36  

### **Descriptions:**  
- The STA473 is a dual full-bridge driver designed for bipolar stepper motor control.  
- It integrates power MOSFETs with a gate drive circuit, making it suitable for high-current stepper motor applications.  
- It supports microstepping operation for smoother motion control.  

### **Features:**  
- **Output Current:** Up to 2.5A per phase (peak)  
- **Supply Voltage Range:** 10V to 45V  
- **Low RDS(ON) MOSFETs:** Reduces power dissipation  
- **Integrated Protection Features:**  
  - Overcurrent protection  
  - Thermal shutdown  
  - Undervoltage lockout (UVLO)  
- **PWM Current Control:** Allows precise current regulation  
- **Compatibility:** Works with external microcontrollers for step and direction control  
- **Microstepping Support:** Enables smoother motor operation  

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

Application Scenarios & Design Considerations

NPN Darlington General purpose

Alternative Part Number

  • 2SD882 --: NPN power transistor in TO-126 package with similar current and voltage ratings, commonly used as a substitute in audio and switching circuits.
  • BD139 --: Widely available NPN medium-power transistor in TO-126, pin-compatible and suitable for similar amplifier and driver applications.
  • MJE340 --: High-voltage NPN transistor in TO-126 package offering comparable power handling and often used as an alternative in driver stages.

Request Quotation

For immediate assistance, call us at +86 533 2716050 or email [email protected]

Part Number Quantity Target Price($USD) Email Contact Person
We offer highly competitive channel pricing. Get in touch for details.

Specializes in hard-to-find components chips