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L4938N from ST,ST Microelectronics

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L4938N

Manufacturer: ST

DUAL MULTIFUNCTION VOLTAGE REGULATOR

Partnumber Manufacturer Quantity Availability
L4938N ST 126 In Stock

Description and Introduction

DUAL MULTIFUNCTION VOLTAGE REGULATOR The L4938N is a low-drop voltage regulator manufactured by STMicroelectronics. Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** Up to 28V  
- **Output Voltage Options:** 5V, 8V, 10V, 12V (fixed) or adjustable (1.2V to 26V)  
- **Output Current:** Up to 500mA  
- **Dropout Voltage:** 0.4V (typical at 500mA)  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 15mV (typical)  
- **Quiescent Current:** 4.5mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220, D²PAK  

### **Descriptions:**  
- The L4938N is a monolithic integrated voltage regulator designed for low-power applications.  
- It includes thermal shutdown, short-circuit protection, and reverse polarity protection.  
- Suitable for automotive and industrial applications due to its robustness.  

### **Features:**  
- **Low Dropout Voltage** (0.4V typical at full load).  
- **Very Low Quiescent Current** in standby mode.  
- **Internal Current and Thermal Limiting** for protection.  
- **Adjustable Output Voltage** (for adjustable versions).  
- **High Ripple Rejection** (75dB typical).  
- **Reverse Battery Protection** (up to -50V).  

This regulator is commonly used in automotive electronics, battery-powered systems, and industrial control circuits.  

(Source: STMicroelectronics datasheet for L4938N.)

Application Scenarios & Design Considerations

DUAL MULTIFUNCTION VOLTAGE REGULATOR
Partnumber Manufacturer Quantity Availability
L4938N STM 161 In Stock

Description and Introduction

DUAL MULTIFUNCTION VOLTAGE REGULATOR The L4938N is a low-drop voltage regulator manufactured by STMicroelectronics (STM). Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Voltage Options:** 5V, 8V, 10V, 12V (fixed versions).  
- **Output Current:** Up to 250mA.  
- **Dropout Voltage:** Typically 0.4V at full load.  
- **Input Voltage Range:** Up to 28V.  
- **Low Quiescent Current:** Typically 300µA.  
- **Low Standby Current:** Less than 10µA in OFF mode.  
- **Operating Temperature Range:** -40°C to +125°C.  
- **Package:** DIP-8 or SO-8.  

### **Descriptions:**  
- The L4938N is a monolithic integrated voltage regulator designed for low-power applications.  
- It includes protection features such as thermal shutdown, short-circuit protection, and reverse polarity protection.  
- Suitable for automotive and industrial applications due to its robustness.  

### **Features:**  
- **Very Low Dropout Voltage:** Ensures efficient regulation even with small input-output differentials.  
- **Low Quiescent Current:** Ideal for battery-powered devices.  
- **Thermal Protection:** Prevents damage from overheating.  
- **Short-Circuit Protection:** Safeguards the regulator and connected circuitry.  
- **Reverse Polarity Protection:** Protects against incorrect power supply connections.  
- **Enable Function:** Allows the regulator to be turned on/off via an external control signal.  

This information is based on the manufacturer's datasheet for the L4938N.

Application Scenarios & Design Considerations

DUAL MULTIFUNCTION VOLTAGE REGULATOR

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