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LM2642MTC-NOPB from NS,National Semiconductor

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LM2642MTC-NOPB

Manufacturer: NS

4.5-30V, Two-Phase Emulated Current Mode Synchoronous Buck Controller 28-TSSOP -40 to 125

Partnumber Manufacturer Quantity Availability
LM2642MTC-NOPB,LM2642MTCNOPB NS 1900 In Stock

Description and Introduction

4.5-30V, Two-Phase Emulated Current Mode Synchoronous Buck Controller 28-TSSOP -40 to 125 The LM2642MTC-NOPB is a dual synchronous buck regulator manufactured by Texas Instruments (NS). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**
- **Manufacturer:** Texas Instruments (NS)  
- **Type:** Dual Synchronous Buck Regulator  
- **Output Voltage Range:** Adjustable from 0.8V to 5.5V  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Current:** Up to 1.5A per channel (3A total)  
- **Switching Frequency:** 1MHz (fixed)  
- **Efficiency:** Up to 95%  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 28-Pin TSSOP (MTC)  

### **Descriptions:**  
The LM2642MTC-NOPB is a high-efficiency, dual-output, synchronous step-down DC-DC converter designed for applications requiring multiple regulated voltages. It integrates two independent buck regulators with synchronous rectification, reducing external component count and improving efficiency.  

### **Features:**  
- **Dual Independent Regulators:** Two 1.5A outputs with individual enable controls.  
- **Synchronous Rectification:** Improves efficiency and reduces heat dissipation.  
- **Fixed-Frequency PWM Operation:** 1MHz switching frequency minimizes external component size.  
- **Adjustable Output Voltage:** Each channel can be set independently via external resistors.  
- **Power-Good Output:** Monitors regulator status for system reliability.  
- **Undervoltage Lockout (UVLO):** Ensures proper operation under low input voltage conditions.  
- **Thermal Shutdown Protection:** Prevents damage from excessive temperatures.  

This information is strictly based on the manufacturer's datasheet and specifications.

Application Scenarios & Design Considerations

4.5-30V, Two-Phase Emulated Current Mode Synchoronous Buck Controller 28-TSSOP -40 to 125

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