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LM2770SDX-12157 from NSC,National Semiconductor

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LM2770SDX-12157

Manufacturer: NSC

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode

Partnumber Manufacturer Quantity Availability
LM2770SDX-12157,LM2770SDX12157 NSC 5 In Stock

Description and Introduction

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode The LM2770SDX-12157 is a switched capacitor voltage inverter manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** -1.57V (fixed)  
- **Output Current:** Up to 50mA  
- **Switching Frequency:** 1.6MHz (typical)  
- **Efficiency:** Up to 90%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 6-pin WSON  

### **Descriptions and Features:**  
- Converts a positive input voltage to a negative output voltage.  
- Uses a switched capacitor architecture for high efficiency.  
- Low output ripple and noise.  
- No inductors required, reducing PCB space.  
- Integrated soft-start feature to limit inrush current.  
- Thermal shutdown and current limit protection.  

This device is commonly used in applications requiring a small negative voltage rail, such as biasing circuits, signal conditioning, and portable electronics.

Application Scenarios & Design Considerations

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode

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