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LM2645MTD from NS,National Semiconductor

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LM2645MTD

Manufacturer: NS

Advanced Two-Phase Switching Controller With Two Linear Outputs

Partnumber Manufacturer Quantity Availability
LM2645MTD NS 1779 In Stock

Description and Introduction

Advanced Two-Phase Switching Controller With Two Linear Outputs The LM2645MTD is a dual synchronous buck regulator manufactured by National Semiconductor (NS). Here are its specifications, descriptions, and features:

### **Specifications:**  
- **Input Voltage Range:** 2.9V to 5.5V  
- **Output Voltage Range:** Adjustable from 0.8V to VIN  
- **Output Current:** Up to 1.5A per channel (3A total)  
- **Switching Frequency:** 1.25MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 28-Pin TSSOP  

### **Descriptions:**  
- The LM2645MTD is a high-efficiency, dual-output, synchronous step-down DC-DC converter.  
- It integrates two independent regulators with internal power MOSFETs, reducing external component count.  
- Designed for low-voltage applications, it provides stable power for portable and embedded systems.  

### **Features:**  
- **Dual Independent Regulators:** Two 1.5A synchronous buck converters in a single package.  
- **High Efficiency:** Uses synchronous rectification for improved power conversion.  
- **Adjustable Outputs:** Each channel can be independently set via external resistors.  
- **Fixed-Frequency PWM Operation:** Ensures predictable noise performance.  
- **Soft-Start & Current Limiting:** Protects against inrush current and overloads.  
- **Power-Good Output:** Monitors regulator status for system reliability.  
- **Low Shutdown Current:** <1µA in shutdown mode for power savings.  

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

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