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L4962E from ST,ST Microelectronics

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L4962E

Manufacturer: ST

1.5A POWER SWITCHING REGULATOR

Partnumber Manufacturer Quantity Availability
L4962E ST 1950 In Stock

Description and Introduction

1.5A POWER SWITCHING REGULATOR The L4962E is a monolithic step-down switching regulator manufactured by STMicroelectronics (ST). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 9V to 46V  
- **Output Voltage Range:** 5.1V to 40V (adjustable via external resistors)  
- **Output Current:** Up to 1.5A  
- **Switching Frequency:** 100kHz (fixed)  
- **Dropout Voltage:** Typically 0.5V at 1A  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +150°C (junction temperature)  
- **Package:** Multiwatt15 (through-hole)  

### **Descriptions:**  
- The L4962E is a step-down (buck) switching regulator designed for high-efficiency DC-DC conversion.  
- It integrates a power switch, oscillator, error amplifier, and protection circuitry.  
- Suitable for industrial, automotive, and consumer applications requiring stable and efficient power conversion.  

### **Features:**  
- **Internal Current Limiting:** Protects against overloads.  
- **Thermal Shutdown:** Prevents damage from excessive heat.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Adjustable Output Voltage:** Set via external resistor divider.  
- **Low Standby Current:** Improves efficiency in light-load conditions.  
- **Pulse-by-Pulse Current Limiting:** Enhances reliability under transient conditions.  

For detailed application notes and schematics, refer to the official STMicroelectronics datasheet.

Application Scenarios & Design Considerations

1.5A POWER SWITCHING REGULATOR

Alternative Part Number

  • LM2576T-5.0 --: Widely available 3A step-down switching regulator in TO-220, similar buck converter function and pinout style, easy drop-in for many L4962E designs with minor external component changes.
  • MC34063A --: Versatile DC-DC switching regulator IC usable in step-down configuration, low cost and broadly stocked, suitable when lower output current is acceptable.
  • L5973D --: ST step-down switching regulator with comparable input voltage range and current capability, same manufacturer family for design continuity though pinout differs.

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