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LM2770SDX-1215 from NSC,National Semiconductor

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LM2770SDX-1215

Manufacturer: NSC

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

Partnumber Manufacturer Quantity Availability
LM2770SDX-1215,LM2770SDX1215 NSC 5 In Stock

Description and Introduction

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode The LM2770SDX-1215 is a switched capacitor voltage inverter manufactured by National Semiconductor (NSC).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** -1.5V (fixed)  
- **Output Current:** Up to 100mA  
- **Switching Frequency:** 1.6MHz (typical)  
- **Efficiency:** Up to 90%  
- **Package:** 6-pin WSON  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions and Features:**  
- **Inverting Charge Pump:** Converts a positive input voltage to a negative output voltage.  
- **Low Output Ripple:** Minimizes noise in sensitive applications.  
- **Low Quiescent Current:** 0.5mA (typical) for power efficiency.  
- **No Inductors Required:** Uses only external capacitors for operation.  
- **Fixed Output Voltage:** Eliminates the need for external feedback resistors.  
- **Thermal Shutdown Protection:** Prevents damage from excessive heat.  
- **Space-Saving Package:** Suitable for compact designs.  

This device is commonly used in applications requiring a small negative voltage rail, such as audio amplifiers, LCD bias supplies, and portable electronics.

Application Scenarios & Design Considerations

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode
Partnumber Manufacturer Quantity Availability
LM2770SDX-1215,LM2770SDX1215 NS 37850 In Stock

Description and Introduction

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode The LM2770SDX-1215 is a switched capacitor voltage inverter manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** -1.5V (fixed)  
- **Output Current:** Up to 100mA  
- **Switching Frequency:** 1.5MHz (typical)  
- **Efficiency:** Up to 90%  
- **Package:** 8-pin WSON (2mm x 2mm)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM2770SDX-1215 is a high-efficiency, low-noise switched capacitor voltage inverter that generates a regulated negative voltage from a positive input. It is designed for applications requiring a small negative rail, such as biasing circuits or powering low-power analog components.  

### **Features:**  
- **Fixed -1.5V Output**  
- **Low Output Noise**  
- **No Inductors Required**  
- **Low Quiescent Current (Typical 0.5mA)**  
- **Integrated Soft-Start**  
- **Thermal Shutdown Protection**  
- **Short-Circuit Protection**  

This device is suitable for portable electronics, data converters, and other applications needing a compact, efficient negative voltage supply.

Application Scenarios & Design Considerations

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

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