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L5973ADTR from ST,ST Microelectronics

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L5973ADTR

Manufacturer: ST, ST,ST

2A SWITCH STEP DOWN SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L5973ADTR ST, ST,ST 60952 In Stock

Description and Introduction

2A SWITCH STEP DOWN SWITCHING REGULATOR The **L5973ADTR** is a step-down switching regulator manufactured by **STMicroelectronics (ST)**. Below are the factual details about the part:

### **Specifications:**
- **Manufacturer:** STMicroelectronics (ST)  
- **Type:** Step-Down Switching Regulator (Buck Converter)  
- **Output Voltage:** Adjustable (1.235V to 35V)  
- **Output Current:** Up to 2.5A  
- **Input Voltage Range:** 4.4V to 36V  
- **Switching Frequency:** 250kHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** **HSOP-8** (Exposed Pad for Thermal Management)  
- **Protection Features:**  
  - Overcurrent Protection  
  - Thermal Shutdown  
  - Soft-Start Function  

### **Descriptions and Features:**  
- The **L5973ADTR** is a monolithic step-down switching regulator designed for high-efficiency DC-DC conversion.  
- It integrates a **PWM controller** with a **2.5A power switch**, reducing external component count.  
- The device operates at a fixed **250kHz switching frequency**, minimizing output ripple.  
- It supports **adjustable output voltage** via an external resistor divider.  
- Features **soft-start** to limit inrush current during startup.  
- The **HSOP-8 package** enhances thermal performance for high-power applications.  
- Suitable for **battery-powered devices, industrial systems, and automotive applications**.  

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

Application Scenarios & Design Considerations

2A SWITCH STEP DOWN SWITCHING REGULATOR

Alternative Part Number

  • LM2596S-ADJ --: Widely available adjustable step-down regulator with similar input voltage range and current capability, easy drop-in for many L5973ADTR designs.
  • MP1584EN --: Compact adjustable buck converter with comparable switching frequency and current rating, good cost-effective alternative.
  • TPS54331 --: 3A adjustable step-down converter with similar voltage range and integrated switch, suitable replacement with minor layout changes.
  • TPS54331D --: 3A step-down converter with wide input range and adjustable output, offers comparable performance and robust protection features.

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