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LM2770SD-1215 from TI,Texas Instruments

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LM2770SD-1215

Manufacturer: TI

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

Partnumber Manufacturer Quantity Availability
LM2770SD-1215,LM2770SD1215 TI 10837 In Stock

Description and Introduction

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode The LM2770SD-1215 is a switched capacitor voltage inverter manufactured by Texas Instruments (TI). Here are its specifications, descriptions, and features:

### **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%  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-pin WSON (SD)  

### **Descriptions:**
The LM2770SD-1215 is a negative voltage inverter that generates a regulated -1.5V output from a positive input voltage (2.7V to 5.5V). It uses a switched capacitor architecture, eliminating the need for an inductor, making it suitable for space-constrained applications.  

### **Features:**
- **No Inductor Required:** Uses only flying capacitors for voltage inversion.  
- **Low Output Ripple:** Minimizes noise in sensitive applications.  
- **Low Quiescent Current:** 0.6mA (typical) for power efficiency.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Small Footprint:** 8-pin WSON package (2mm x 2mm).  

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

Application Scenarios & Design Considerations

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode
Partnumber Manufacturer Quantity Availability
LM2770SD-1215,LM2770SD1215 NS 18299 In Stock

Description and Introduction

High Efficiency Switched Capacitor Step-Down DC/DC Regulator with Sleep Mode The LM2770SD-1215 is a switched capacitor voltage inverter manufactured by Texas Instruments (NS).  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** -12V (fixed)  
- **Output Current:** Up to 15mA  
- **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 and Features:**  
- **Voltage Inverter:** Converts a positive input voltage to a negative output voltage.  
- **Low External Component Count:** Requires only two small external capacitors.  
- **Low Output Impedance:** Ensures stable performance under varying loads.  
- **Low Quiescent Current:** Typically 0.5mA (no load).  
- **Thermal Shutdown Protection:** Prevents damage from excessive heat.  
- **Soft-Start Feature:** Reduces inrush current during startup.  
- **Applications:** Used in LCD bias supplies, sensor biasing, and other low-power negative voltage applications.  

This device is designed for space-constrained applications due to its small package size and minimal external component requirements.

Application Scenarios & Design Considerations

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

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