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L4959 from ST,ST Microelectronics

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L4959

Manufacturer: ST, STM

MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO

Partnumber Manufacturer Quantity Availability
L4959 ST, STM 5877 In Stock

Description and Introduction

MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO **Part L4959 Manufacturer: STM (STMicroelectronics)**  

### **Specifications:**  
- **Output Voltage:** Adjustable from 1.235V to 20V  
- **Output Current:** Up to 1.5A  
- **Dropout Voltage:** Typically 0.5V at 1A  
- **Input Voltage Range:** Up to 28V  
- **Line Regulation:** 0.05% (Typical)  
- **Load Regulation:** 0.1% (Typical)  
- **Quiescent Current:** 10mA (Typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TO-220  

### **Descriptions:**  
The **L4959** is a **low-dropout (LDO) voltage regulator** from **STMicroelectronics**, designed for high-performance applications requiring stable and precise voltage regulation. It features **thermal shutdown, short-circuit protection, and an adjustable output voltage** via an external resistor divider.  

### **Features:**  
- **Adjustable Output Voltage** (1.235V to 20V)  
- **Low Dropout Voltage** (0.5V at 1A)  
- **High Output Current Capability** (1.5A)  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  
- **Wide Input Voltage Range** (Up to 28V)  
- **Stable with Low-ESR Capacitors**  
- **TO-220 Package for Efficient Heat Dissipation**  

This regulator is suitable for **power supplies, automotive systems, and industrial applications** requiring reliable voltage regulation.

Application Scenarios & Design Considerations

MULTIFUNCTION VOLTAGE REGULATOR FOR HOME AUDIO

Alternative Part Number

  • LM317T --: Widely available adjustable linear regulator with similar voltage/current capability, easy drop-in for many L4959 applications.
  • L78S05CV --: Fixed 5V regulator from ST with comparable package and current rating, suitable when a fixed output is acceptable.
  • MC33269DT-5.0G --: Low-dropout 5V regulator in TO-252/DPAK, good alternative for space-constrained designs needing similar output.
  • MC7805CTG --: Industry-standard 5V fixed linear regulator with TO-220 package, pin-compatible with many STM L-series regulators and broadly sourced.

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