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L4972A from ST,ST Microelectronics

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L4972A

Manufacturer: ST

5A SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4972A ST 500 In Stock

Description and Introduction

5A SWITCHING REGULATOR The L4972A is a monolithic step-down switching regulator manufactured by STMicroelectronics. Below are the factual details about its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 15V to 50V  
- **Output Voltage Range:** Adjustable from 5.1V to 40V  
- **Output Current:** Up to 2A  
- **Switching Frequency:** 200 kHz (fixed)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** Multiwatt15 (15-lead vertical power package)  

### **Descriptions:**  
- The L4972A is a step-down (buck) DC-DC converter with a high-efficiency switching regulator.  
- It includes a power switch, oscillator, error amplifier, and protection circuits.  
- Designed for automotive, industrial, and consumer applications requiring high efficiency and compact power solutions.  

### **Features:**  
- **Internal Power Switch:** DMOS transistor with low saturation voltage.  
- **Voltage Reference:** Precision 5.1V ±2% bandgap reference.  
- **Soft-Start:** Built-in to limit inrush current.  
- **Protections:**  
  - Overcurrent protection with latch or auto-restart mode.  
  - Thermal shutdown.  
  - Undervoltage lockout (UVLO).  
- **Adjustable Output Voltage:** Via external resistor divider.  
- **Synchronization Capability:** External clock synchronization possible.  

This information is sourced from STMicroelectronics' official documentation.

Application Scenarios & Design Considerations

5A SWITCHING REGULATOR
Partnumber Manufacturer Quantity Availability
L4972A STM 63 In Stock

Description and Introduction

5A SWITCHING REGULATOR The L4972A is a step-down switching regulator manufactured by STMicroelectronics (STM). Here are its key specifications, descriptions, and features:

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

### **Specifications:**  
- **Output Voltage:** Adjustable from **3.3V to 50V**  
- **Output Current:** Up to **2A**  
- **Input Voltage Range:** **15V to 55V**  
- **Switching Frequency:** **200 kHz**  
- **Efficiency:** Up to **90%**  
- **Operating Temperature Range:** **-40°C to +150°C**  
- **Package:** **Multiwatt15 (Vertical)**  

### **Descriptions:**  
- The **L4972A** is a **monolithic step-down switching regulator** designed for high-efficiency DC-DC conversion.  
- It integrates a **DMOS power switch**, **PWM control**, and protection features.  
- Suitable for **automotive, industrial, and power supply applications**.  

### **Features:**  
- **Adjustable output voltage** via external resistors.  
- **Soft-start** function to limit inrush current.  
- **Overcurrent protection** with foldback.  
- **Thermal shutdown** for safety.  
- **Undervoltage lockout (UVLO)** to prevent malfunction at low input voltages.  
- **Synchronous rectification** for improved efficiency.  
- **External compensation** for stability optimization.  

This information is based on STM's official datasheet for the L4972A.

Application Scenarios & Design Considerations

5A SWITCHING REGULATOR

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