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L4938NPD from ST,ST Microelectronics

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L4938NPD

Manufacturer: ST

DUAL MULTIFUNCTION VOLTAGE REGULATOR

Partnumber Manufacturer Quantity Availability
L4938NPD ST 1800 In Stock

Description and Introduction

DUAL MULTIFUNCTION VOLTAGE REGULATOR The L4938NPD is a low-drop voltage regulator manufactured by STMicroelectronics.  

### **Specifications:**  
- **Output Voltage Options:** 3.3V, 5V, 8V, 9V, 10V, 12V  
- **Output Current:** Up to 250 mA  
- **Dropout Voltage:** 0.4V (typical at 250 mA)  
- **Input Voltage Range:** Up to 28V  
- **Low Quiescent Current:** 0.4 mA (typical)  
- **Low Standby Current:** <1 µA (when disabled)  
- **Protection Features:**  
  - Short-circuit protection  
  - Thermal shutdown  
  - Reverse polarity protection  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** DPAK (TO-252)  

### **Descriptions and Features:**  
- Designed for automotive and industrial applications.  
- Very low dropout voltage ensures efficient regulation even with small input-output differentials.  
- Includes an enable pin for power-saving mode.  
- Stable with low-ESR capacitors.  
- Suitable for battery-powered applications due to low quiescent current.  
- Compliant with automotive standards (AEC-Q100 qualified).  

This regulator is ideal for applications requiring stable voltage supply in harsh environments.

Application Scenarios & Design Considerations

DUAL MULTIFUNCTION VOLTAGE REGULATOR

Alternative Part Number

  • TLE4275G --: Low-dropout linear regulator with similar voltage/current class, widely used as a direct substitute for ST L49xx automotive regulators.
  • MC33269DT-5.0G --: Adjustable/fixed LDO regulator in DPAK with comparable current rating and thermal performance, suitable replacement for L4938NPD.
  • LM2940CT-5.0 --: Classic low-dropout regulator with similar input/output voltage range and current capability, commonly cross-referenced for ST L4938 series.

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