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L4938ND from ST,ST Microelectronics

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L4938ND

Manufacturer: ST, STM

DUAL MULTIFUNCTION VOLTAGE REGULATOR
Partnumber Manufacturer Quantity Availability
L4938ND ST, STM 546 In Stock

Description and Introduction

DUAL MULTIFUNCTION VOLTAGE REGULATOR The part **L4938ND** is manufactured by **STMicroelectronics (STM)**.  

### **Specifications:**  
- **Type:** Low-drop voltage regulator  
- **Output Voltage:** 3.3V (fixed)  
- **Output Current:** Up to 250mA  
- **Dropout Voltage:** Typically 0.4V at 250mA  
- **Input Voltage Range:** Up to 28V  
- **Quiescent Current:** Low (typically 300µA)  
- **Protection Features:**  
  - Overcurrent protection  
  - Thermal shutdown  
  - Reverse polarity protection  
- **Package:** DPAK (TO-252)  

### **Descriptions & Features:**  
- Designed for automotive and industrial applications.  
- Provides stable 3.3V output with low dropout voltage.  
- Suitable for harsh environments due to built-in protections.  
- Low quiescent current improves efficiency in battery-powered systems.  
- Compliant with automotive standards (AEC-Q100 qualified).  

For exact electrical characteristics and application details, refer to the official **STMicroelectronics datasheet**.

Application Scenarios & Design Considerations

DUAL MULTIFUNCTION VOLTAGE REGULATOR

Alternative Part Number

  • LM2931AD50 --: 5V low-dropout linear regulator with similar current capability and pinout, widely available and a common drop-in substitute for ST L4938 series regulators.
  • MC33269D-5.0 --: 5V LDO regulator in DPAK with comparable dropout and current rating, suitable replacement for automotive-grade 5V regulation applications.
  • L78L05ACD --: Standard 5V linear regulator from a different ST series, lower current but pin-compatible in many circuits where the L4938 is used for simple 5V regulation.
  • LM2931AD50R --: Low-dropout 5V linear regulator in SO-8, similar function and pinout family; widely available and often used where L4938ND is specified.
  • MC33269D-5.0G --: 5V low-dropout regulator in SO-8 with comparable current rating and thermal behavior, suitable drop-in for many L4938ND applications.
  • LP2951ACMX/NOPB --: Adjustable/5V low-dropout regulator in SO-8 with low quiescent current, a common cross for ST L4938 series regulators.
  • LM2931D --: Low-dropout linear regulator with similar voltage/current ratings and pinout, widely used as a direct substitute in automotive and industrial supplies.
  • MC33269D --: Adjustable/fixed LDO regulator in DPAK with comparable dropout and current capability, suitable replacement for L4938ND applications.

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