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L4963W from ST,ST Microelectronics

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L4963W

Manufacturer: ST

1.5A SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4963W ST 3143 In Stock

Description and Introduction

1.5A SWITCHING REGULATOR The L4963W is a monolithic switching regulator manufactured by STMicroelectronics. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Output Voltage:** Adjustable from **5.1V to 40V**  
- **Output Current:** Up to **2.5A** (with proper heat dissipation)  
- **Input Voltage Range:** **9V to 50V**  
- **Switching Frequency:** **100 kHz** (fixed)  
- **Efficiency:** Up to **90%**  
- **Dropout Voltage:** **1.1V typical** (at 2.5A)  
- **Operating Temperature Range:** **-40°C to +150°C** (junction temperature)  
- **Package:** **TO-220 (15-lead)**  

### **Descriptions:**  
The **L4963W** is a step-down (buck) switching regulator designed for high-efficiency power supply applications. It integrates a **PWM controller, power switch, and protection circuits** in a single package. The device is well-suited for industrial, automotive, and consumer electronics requiring stable and efficient DC-DC conversion.  

### **Features:**  
- **Internal 5V Reference Voltage** (1% accuracy)  
- **Soft-Start Function** (to limit inrush current)  
- **Current Limiting & Thermal Shutdown Protection**  
- **Undervoltage Lockout (UVLO)**  
- **Adjustable Output Voltage via External Resistor Divider**  
- **Low Standby Current Consumption**  
- **Monolithic Design for Compact Applications**  

This information is based on STMicroelectronics' official documentation for the L4963W.

Application Scenarios & Design Considerations

1.5A SWITCHING REGULATOR

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