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LM3544MX-L from NSC,National Semiconductor

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LM3544MX-L

Manufacturer: NSC

Quad Port USB Power Distribution Switch and Over-Current Protection

Partnumber Manufacturer Quantity Availability
LM3544MX-L,LM3544MXL NSC 1636 In Stock

Description and Introduction

Quad Port USB Power Distribution Switch and Over-Current Protection The LM3544MX-L is a switching regulator IC manufactured by National Semiconductor (NSC). Below are the factual details from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** National Semiconductor (NSC)  
- **Type:** Switching Regulator (Buck Converter)  
- **Input Voltage Range:** 4.5V to 30V  
- **Output Voltage Range:** Adjustable (1.25V to 25V)  
- **Output Current:** Up to 500mA  
- **Switching Frequency:** 100kHz (typical)  
- **Efficiency:** Up to 85%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOIC-8  

### **Descriptions:**
The LM3544MX-L is a step-down (buck) DC-DC converter designed for efficient voltage regulation in various applications. It integrates a power switch, oscillator, and control circuitry to provide a stable output voltage from a higher input voltage.  

### **Features:**
- **Wide Input Voltage Range (4.5V to 30V)**  
- **Adjustable Output Voltage (1.25V to 25V)**  
- **Internal Power Switch (500mA Current Capability)**  
- **Fixed-Frequency Operation (100kHz)**  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  
- **Low Quiescent Current (Typical 4mA)**  
- **SOIC-8 Package for Compact Designs**  

This information is based solely on the provided knowledge base. No additional guidance or suggestions are included.

Application Scenarios & Design Considerations

Quad Port USB Power Distribution Switch and Over-Current Protection
Partnumber Manufacturer Quantity Availability
LM3544MX-L,LM3544MXL NS 611 In Stock

Description and Introduction

Quad Port USB Power Distribution Switch and Over-Current Protection The LM3544MX-L is a high-efficiency, step-up DC-DC converter manufactured by National Semiconductor (NS). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage Range:** Adjustable up to 5.5V  
- **Output Current:** Up to 1A  
- **Switching Frequency:** 1.2MHz (typical)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 10-pin MSOP  

### **Descriptions:**  
The LM3544MX-L is a synchronous boost converter designed for battery-powered applications. It integrates power switches and provides high efficiency with minimal external components. It is suitable for portable devices, USB peripherals, and other low-power systems requiring regulated voltage.  

### **Features:**  
- **Integrated Synchronous Rectifier:** Improves efficiency by reducing power loss.  
- **Low Quiescent Current:** 30µA (typical) in shutdown mode.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Overcurrent and Thermal Protection:** Ensures safe operation.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Small Footprint:** MSOP package for space-constrained designs.  

This information is based on the manufacturer's datasheet. For detailed performance characteristics, refer to the official documentation.

Application Scenarios & Design Considerations

Quad Port USB Power Distribution Switch and Over-Current Protection

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