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LM2717MT from NS,National Semiconductor

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LM2717MT

Manufacturer: NS, NSC

Dual Step-down DC/DC Converter

Partnumber Manufacturer Quantity Availability
LM2717MT NS, NSC 4562 In Stock

Description and Introduction

Dual Step-down DC/DC Converter The LM2717MT is a dual DC/DC converter manufactured by National Semiconductor (NS). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 3V to 20V  
- **Output Voltage Range:** Adjustable (depends on external components)  
- **Switching Frequency:** 550 kHz (Buck Converter), 160 kHz (Boost Converter)  
- **Output Current:** Up to 1A (Buck), Up to 400mA (Boost)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** TSSOP-20  

### **Descriptions:**  
- The LM2717MT integrates a step-down (buck) converter and a step-up (boost) converter in a single IC.  
- It is designed for power management applications, providing efficient voltage conversion.  
- The buck converter operates at a fixed 550 kHz frequency, while the boost converter runs at 160 kHz.  

### **Features:**  
- **Dual DC/DC Converter:** Combines buck and boost regulators in one package.  
- **High Efficiency:** Optimized for power-sensitive applications.  
- **Low Quiescent Current:** Improves battery life in portable devices.  
- **Soft-Start Function:** Prevents inrush current during startup.  
- **Thermal Shutdown Protection:** Safeguards against overheating.  
- **Synchronization Capability:** Allows external clock synchronization.  

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

Application Scenarios & Design Considerations

Dual Step-down DC/DC Converter

Alternative Part Number

  • TPS55340PWPR --: Wide-input boost converter with integrated switch, similar function and package class; TI is the successor brand for National Semiconductor parts and offers strong availability.
  • LT1932ES6 --: Compact boost/step-up converter with comparable input range and current capability, well-suited as a functional substitute in similar power designs.
  • MC34063ADR2G --: Classic general-purpose DC-DC switching regulator usable in boost configurations; widely available and cost-effective for less demanding replacement needs.

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