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L4993DTR from ST,ST Microelectronics

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L4993DTR

Manufacturer: ST, ST,ST

Low drop voltage regulator with watchdog

Partnumber Manufacturer Quantity Availability
L4993DTR ST, ST,ST 13171 In Stock

Description and Introduction

Low drop voltage regulator with watchdog The part **L4993DTR** is manufactured by **STMicroelectronics (ST)**. Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** STMicroelectronics  
- **Category:** PMIC - Voltage Regulators - DC DC Switching Regulators  
- **Output Type:** Adjustable  
- **Topology:** Buck  
- **Output Voltage Range:** 0.8V to 5.5V  
- **Output Current:** 3A  
- **Input Voltage Range:** 4.5V to 18V  
- **Switching Frequency:** 300kHz to 1MHz (adjustable)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** **SO-8 (Exposed Pad)**  

### **Descriptions:**
The **L4993DTR** is a **step-down (buck) switching regulator** designed for high-efficiency power conversion applications. It features an adjustable output voltage, high current capability, and a wide input voltage range, making it suitable for various industrial, automotive, and consumer electronics applications.

### **Features:**
- **Adjustable Output Voltage (0.8V to 5.5V)**  
- **3A Output Current Capability**  
- **Wide Input Voltage Range (4.5V to 18V)**  
- **Adjustable Switching Frequency (300kHz to 1MHz)**  
- **Synchronous Rectification for High Efficiency**  
- **Internal Soft-Start Function**  
- **Overcurrent and Overtemperature Protection**  
- **Low Dropout Operation**  
- **Thermally Enhanced SO-8 Package**  

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

Application Scenarios & Design Considerations

Low drop voltage regulator with watchdog

Alternative Part Number

  • TPS7B6933QDBVRQ1 --: Automotive-grade 3.3V low-dropout linear regulator in SOT-23-5 with comparable current capability and wide input range, suitable replacement for L4993DTR in similar regulation applications.
  • NCV4275D2T50RKG --: Low-dropout linear regulator with 5V fixed output and thermal shutdown, similar automotive-oriented linear regulator function to the L4993DTR.
  • BD433M5FP-CE2 --: Automotive 3.3V LDO regulator with low quiescent current and overcurrent protection, offering comparable regulation performance in a different package family.
  • TPS7A4901DGNR --: Low-dropout linear regulator with similar 36V input and 150mA output capability, suitable replacement in many L4993DTR applications.
  • LM2931AD-5.0 --: Widely available 5V low-dropout regulator with comparable current rating and thermal behavior, easy drop-in for many designs.
  • MC33269D-5.0G --: 5V LDO regulator with similar dropout and current specifications, commonly used as an alternative to ST L4993 series parts.

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