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L5989DTR from ST,ST Microelectronics

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L5989DTR

Manufacturer: ST

4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

Partnumber Manufacturer Quantity Availability
L5989DTR ST 17 In Stock

Description and Introduction

4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification The **L5989DTR** is a step-down monolithic power switching regulator manufactured by **STMicroelectronics (ST)**. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Manufacturer:**  
- **STMicroelectronics (ST)**  

### **Key Specifications:**  
- **Input Voltage Range:** 4 V to 36 V  
- **Output Voltage Range:** 0.6 V to VIN  
- **Output Current:** Up to 4 A  
- **Switching Frequency:** Adjustable (250 kHz to 1 MHz)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +150°C (Junction Temperature)  
- **Package:** **PowerSO-8**  

### **Descriptions:**  
- **Synchronous Buck Converter:** Integrates high-side and low-side MOSFETs for improved efficiency.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Current Mode Control:** Ensures stability and fast transient response.  
- **Soft-Start Function:** Prevents inrush current at startup.  
- **Protection Features:**  
  - Overcurrent protection (OCP)  
  - Thermal shutdown  
  - Undervoltage lockout (UVLO)  

### **Features:**  
- **Wide Input Voltage Range:** Suitable for industrial and automotive applications.  
- **High Efficiency:** Minimizes power loss with synchronous rectification.  
- **Adjustable Frequency:** Allows optimization for size and efficiency.  
- **Low Dropout Operation:** Maintains regulation even when input voltage is close to output.  
- **Integrated Power MOSFETs:** Reduces external component count.  

This information is based on STMicroelectronics' official datasheet for the **L5989DTR**. For detailed electrical characteristics and application circuits, refer to the manufacturer's documentation.

Application Scenarios & Design Considerations

4 A continuous (more than 5 A pulsed) step-down switching regulator with synchronous rectification

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