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LM2635 from NS,National Semiconductor

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LM2635

Manufacturer: NS

Synchronous Buck Regulator Controller

Partnumber Manufacturer Quantity Availability
LM2635 NS 37 In Stock

Description and Introduction

Synchronous Buck Regulator Controller The LM2635 is a switching regulator controller manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable from 1.25V to 5.5V  
- **Switching Frequency:** 300 kHz  
- **Output Current:** Up to 5A (with external components)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package Type:** 16-Pin SOIC (Small Outline Integrated Circuit)  

### **Descriptions:**
- The LM2635 is a high-efficiency, step-down (buck) DC-DC switching regulator controller.  
- It is designed to drive an external N-channel MOSFET to provide high-current output with minimal external components.  
- The device includes an internal voltage reference, error amplifier, and PWM (Pulse Width Modulation) control circuitry.  
- It is suitable for applications requiring high efficiency and precise voltage regulation, such as power supplies for microprocessors, FPGAs, and other digital ICs.  

### **Features:**
- **Adjustable Output Voltage:** Set via external resistors.  
- **Soft-Start Function:** Reduces inrush current during startup.  
- **Overcurrent Protection:** Prevents damage due to excessive load current.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Synchronizable Switching Frequency:** Can be synchronized to an external clock.  
- **Thermal Shutdown:** Protects the device from overheating.  

This information is based on the manufacturer's datasheet for the LM2635 by National Semiconductor.

Application Scenarios & Design Considerations

Synchronous Buck Regulator Controller

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