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LM2647MTC from NS,National Semiconductor

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LM2647MTC

Manufacturer: NS

Dual Synchronous Buck Regulator Controller

Partnumber Manufacturer Quantity Availability
LM2647MTC NS 34 In Stock

Description and Introduction

Dual Synchronous Buck Regulator Controller The LM2647MTC is a dual synchronous buck regulator manufactured by National Semiconductor (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Input Voltage Range:** 2.5V to 5.5V  
- **Output Voltage Range:** Adjustable down to 0.8V  
- **Output Current:** Up to 2A per channel (dual output)  
- **Switching Frequency:** 1.5MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 28-lead TSSOP (MTC)  

### **Descriptions:**  
- The LM2647MTC is a high-efficiency, dual-channel synchronous step-down DC-DC converter.  
- It integrates two PWM controllers with power MOSFETs, reducing external component count.  
- Designed for low-voltage, high-current applications such as portable devices, networking, and DSP power supplies.  

### **Features:**  
- **Dual Output:** Two independent regulators in one package.  
- **Synchronous Rectification:** Improves efficiency and reduces heat dissipation.  
- **Adjustable Output Voltage:** Set via external resistors.  
- **Soft-Start:** Prevents inrush current at startup.  
- **Power-Good Indicator:** Monitors output voltage status.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage.  
- **Thermal Shutdown:** Protects the device from overheating.  

This information is based solely on the manufacturer's datasheet and technical documentation.

Application Scenarios & Design Considerations

Dual Synchronous Buck Regulator Controller
Partnumber Manufacturer Quantity Availability
LM2647MTC NSC 123 In Stock

Description and Introduction

Dual Synchronous Buck Regulator Controller The LM2647MTC is a dual synchronous buck regulator manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Input Voltage Range:** 3 V to 5.5 V  
- **Output Voltage Range:** Adjustable from 0.8 V to VIN  
- **Output Current:** Up to 2 A per channel (dual output)  
- **Switching Frequency:** 1 MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** TSSOP-28  

### **Descriptions:**  
- The LM2647MTC integrates two high-efficiency synchronous buck regulators in a single package.  
- It is designed for low-voltage, high-current applications such as portable devices.  
- Features internal MOSFETs for compact power supply designs.  

### **Features:**  
- Dual synchronous buck regulators with independent enable controls.  
- Adjustable soft-start for controlled startup.  
- Overcurrent and thermal protection.  
- Power-good indicator for each output.  
- Low dropout operation for extended battery life.  
- Internal compensation for simplified design.  

This information is based on the manufacturer's datasheet.

Application Scenarios & Design Considerations

Dual Synchronous Buck Regulator Controller

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