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LM338K

5A Positive Adjustable Voltage Regulator

Partnumber Manufacturer Quantity Availability
LM338K 36 In Stock

Description and Introduction

5A Positive Adjustable Voltage Regulator The LM338K is a 3-terminal adjustable positive voltage regulator manufactured by Texas Instruments and other semiconductor companies.  

### **Specifications:**  
- **Output Voltage Range:** 1.2V to 32V  
- **Output Current:** 5A (continuous)  
- **Input-Output Voltage Differential (Dropout):** 3V (typical at full load)  
- **Line Regulation:** 0.005%/V (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Operating Temperature Range:** 0°C to +125°C  
- **Package Type:** TO-3 (metal can)  
- **Thermal Overload Protection:** Yes  
- **Short-Circuit Protection:** Yes  

### **Descriptions:**  
The LM338K is a high-current adjustable voltage regulator designed to supply over 5A of output current with an adjustable output voltage. It is commonly used in power supply circuits, battery chargers, and other applications requiring stable, high-current voltage regulation.  

### **Features:**  
- Adjustable output voltage  
- High current capability (5A)  
- Thermal overload protection  
- Short-circuit protection  
- Low standby current  
- High ripple rejection ratio  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

5A Positive Adjustable Voltage Regulator

Alternative Part Number

  • LT1083CP --: Adjustable positive linear regulator rated 7.5A with similar TO-3/TO-220 package options, low dropout and excellent line/load regulation, a common upgrade for LM338K applications.
  • LM350K --: 3A adjustable positive voltage regulator in TO-3 package, same family pinout and function as LM338K but lower current rating, suitable for less demanding loads.
  • LT1084CP --: 5A adjustable low-dropout positive regulator, drop-in style replacement for many LM338 designs with better dropout performance and thermal behavior.

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