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L4981BD013TR from STM,ST Microelectronics

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L4981BD013TR

Manufacturer: STM

POWER FACTOR CORRECTOR

Partnumber Manufacturer Quantity Availability
L4981BD013TR STM 85 In Stock

Description and Introduction

POWER FACTOR CORRECTOR The **L4981BD013TR** is a power factor correction (PFC) controller manufactured by **STMicroelectronics (STM)**. Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 85V to 265V (AC)  
- **Output Voltage Range:** Up to 400V (DC)  
- **Switching Frequency:** Adjustable (typically up to 300 kHz)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SO-16 (Surface Mount)  
- **Control Method:** Transition Mode (TM) PFC  
- **Supply Voltage (VCC):** 10.5V to 22V  
- **Maximum Duty Cycle:** 94%  
- **Peak Current Limit:** Programmable  

### **Descriptions:**  
- The **L4981BD013TR** is designed for **high-efficiency power factor correction** in AC/DC converters.  
- It operates in **transition mode (boundary conduction mode, BCM)**, optimizing efficiency and reducing EMI.  
- Includes **overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown**.  
- Suitable for **SMPS (switched-mode power supplies), LED drivers, and industrial power systems**.  

### **Features:**  
- **Power Factor Correction (PFC) Control**  
- **Low THD (Total Harmonic Distortion)**  
- **Zero-Current Detection (ZCD)**  
- **Adjustable Output Voltage**  
- **Internal Startup Timer**  
- **Soft-Start Function**  
- **Programmable Current Limiting**  
- **Low Quiescent Current**  

This IC is commonly used in applications requiring **high power factor and compliance with energy efficiency standards (e.g., IEC 61000-3-2)**.  

Would you like additional details on any specific aspect?

Application Scenarios & Design Considerations

POWER FACTOR CORRECTOR
Partnumber Manufacturer Quantity Availability
L4981BD013TR ST 12850 In Stock

Description and Introduction

POWER FACTOR CORRECTOR The L4981BD013TR is a high-voltage double-ended controller manufactured by STMicroelectronics (ST). It is designed for offline power supplies and features a fixed-frequency current-mode PWM controller.  

### **Key Specifications:**  
- **Input Voltage (VCC):** Up to 20V  
- **Operating Frequency:** Adjustable up to 500kHz  
- **Output Drive Current:** ±500mA (peak)  
- **Duty Cycle Range:** Up to 50%  
- **Start-up Current:** Low (typically 100µA)  
- **Protection Features:** Overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown  
- **Package:** SO-16  

### **Descriptions & Features:**  
- **Current-Mode Control:** Ensures cycle-by-cycle current limiting for improved reliability.  
- **Soft-Start Function:** Reduces inrush current at startup.  
- **Synchronization Capability:** Allows external clock synchronization.  
- **Low Power Consumption:** Optimized for energy-efficient applications.  
- **High-Voltage Startup:** Integrated high-voltage startup circuit simplifies design.  

This IC is commonly used in AC-DC converters, power adapters, and LED drivers.  

(Source: STMicroelectronics datasheet)

Application Scenarios & Design Considerations

POWER FACTOR CORRECTOR

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