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L4993D from ST,ST Microelectronics

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L4993D

Manufacturer: ST

Low drop voltage regulator with watchdog

Partnumber Manufacturer Quantity Availability
L4993D ST 148 In Stock

Description and Introduction

Low drop voltage regulator with watchdog The part **L4993D** is a **high voltage monolithic power switching regulator** manufactured by **STMicroelectronics (ST)**.  

### **Key Specifications:**  
- **Input Voltage Range:** 8V to 100V  
- **Output Voltage:** Adjustable (via external resistors)  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** Up to 500kHz  
- **Operating Temperature Range:** -40°C to +150°C  
- **Package:** SO-8 (Surface Mount)  

### **Features:**  
- **Wide Input Voltage Range** (suitable for automotive and industrial applications)  
- **Internal Current Limiting** for overload protection  
- **Thermal Shutdown** for overtemperature protection  
- **Soft-Start Function** to reduce inrush current  
- **Adjustable Output Voltage**  
- **Low Dropout Operation**  

This regulator is commonly used in **DC-DC conversion, industrial power supplies, and automotive systems**.  

Would you like additional details on any specific aspect?

Application Scenarios & Design Considerations

Low drop voltage regulator with watchdog

Alternative Part Number

  • LM2931AD50 --: Low-dropout 5V linear regulator in SO-8 with similar current rating and pinout, widely available and a common drop-in substitute for ST L4993D.
  • MC33269D-5.0 --: 5V low-dropout regulator in SO-8 package with comparable dropout voltage and output current, suitable replacement with different naming series.
  • L78L05ACD --: Standard 5V linear regulator in SO-8 from the same manufacturer, lower current but pin-compatible for many low-power applications.

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