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L4953 from ST,ST Microelectronics

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L4953

Manufacturer: ST

MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO

Partnumber Manufacturer Quantity Availability
L4953 ST 50 In Stock

Description and Introduction

MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO The part L4953 is a low-dropout voltage regulator (LDO) manufactured by STMicroelectronics (ST). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Output Voltage:** 5V (fixed)  
- **Output Current:** Up to 150mA  
- **Dropout Voltage:** Typically 0.4V at full load (150mA)  
- **Input Voltage Range:** Up to 30V  
- **Line Regulation:** 0.2% (typical)  
- **Load Regulation:** 0.4% (typical)  
- **Quiescent Current:** 1.6mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package Options:** TO-92, DPAK, SO-8  

### **Descriptions:**
- The L4953 is a monolithic integrated LDO voltage regulator designed for applications requiring a stable 5V supply.  
- It includes overcurrent protection, thermal shutdown, and reverse polarity protection.  
- Suitable for automotive, industrial, and consumer electronics applications.  

### **Features:**
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **Thermal Protection:** Prevents damage due to overheating.  
- **Short-Circuit Protection:** Safeguards the regulator and load.  
- **Reverse Polarity Protection:** Enhances reliability in case of incorrect connections.  
- **Wide Input Voltage Range:** Supports operation in varying power supply conditions.  
- **Low Quiescent Current:** Improves efficiency in battery-powered applications.  

This information is based on STMicroelectronics' official documentation for the L4953.

Application Scenarios & Design Considerations

MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO

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