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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.

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.

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