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LM5025ASD from NS,National Semiconductor

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LM5025ASD

Manufacturer: NS

Active Clamp Voltage Mode PWM Controller

Partnumber Manufacturer Quantity Availability
LM5025ASD NS 1658 In Stock

Description and Introduction

Active Clamp Voltage Mode PWM Controller The LM5025ASD is a high-voltage PWM controller manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Input Voltage Range:** 14V to 100V  
- **Operating Frequency:** Adjustable up to 1MHz  
- **Duty Cycle Range:** Up to 90%  
- **Output Drive Current:** 1A (peak)  
- **Control Method:** Voltage Mode PWM  
- **Protection Features:**  
  - Undervoltage Lockout (UVLO)  
  - Overcurrent Protection  
  - Soft-Start Capability  
- **Package:** 10-Pin WSON (Exposed Pad)  

### **Descriptions and Features:**  
- Designed for high-voltage DC-DC converters.  
- Suitable for isolated and non-isolated topologies (forward, flyback, buck, boost).  
- Includes an integrated high-voltage startup regulator.  
- Adjustable oscillator frequency with synchronization capability.  
- Precision reference voltage (1.25V) for feedback control.  
- Low shutdown current (<100µA).  

This controller is commonly used in industrial, telecom, and automotive power supply applications.

Application Scenarios & Design Considerations

Active Clamp Voltage Mode PWM Controller
Partnumber Manufacturer Quantity Availability
LM5025ASD NSC 150 In Stock

Description and Introduction

Active Clamp Voltage Mode PWM Controller The LM5025ASD is a high-voltage PWM controller manufactured by National Semiconductor (NSC). Below are its specifications, descriptions, and features:  

### **Specifications:**  
- **Input Voltage Range:** 13V to 90V  
- **Output Voltage:** Adjustable  
- **Switching Frequency:** Up to 1MHz  
- **Duty Cycle Range:** 0% to 100%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**  
The LM5025ASD is a versatile PWM controller designed for high-voltage applications, including isolated and non-isolated DC-DC converters. It integrates a high-voltage start-up regulator, reducing external component count.  

### **Features:**  
- **High-Voltage Start-Up Regulator:** Operates directly from a high-voltage input (up to 90V).  
- **Programmable Soft-Start:** Reduces inrush current during startup.  
- **Current Mode Control:** Improves transient response and simplifies loop compensation.  
- **Adjustable Switching Frequency:** Up to 1MHz for optimized efficiency.  
- **Under-Voltage Lockout (UVLO):** Ensures reliable operation under low input voltage conditions.  
- **Cycle-by-Cycle Current Limiting:** Protects against overloads.  

This information is based on the manufacturer's datasheet. For detailed application notes, refer to NSC's official documentation.

Application Scenarios & Design Considerations

Active Clamp Voltage Mode PWM Controller

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