Switched Capacitor Boost Regulator with High Impedance Output in Shutdown The LM2757TMX is a switching regulator from Texas Instruments (formerly National Semiconductor, NS).  

### **Manufacturer:**  
Texas Instruments (formerly National Semiconductor, NS)  

### **Specifications:**  
- **Input Voltage Range:** 2.7V to 5.5V  
- **Output Voltage:** Adjustable (requires external resistors)  
- **Switching Frequency:** 1.6MHz (typical)  
- **Output Current:** Up to 100mA  
- **Efficiency:** Up to 90%  
- **Package:** 6-Pin Thin SOT-23 (DSBGA also available)  
- **Operating Temperature Range:** -40°C to +85°C  

### **Descriptions:**  
The LM2757TMX is a high-efficiency, fixed-frequency, step-up DC-DC converter designed for low-power applications. It integrates a power switch and provides a regulated output voltage from a low input supply.  

### **Features:**  
- **Low Quiescent Current:** 17µA (typical)  
- **Fixed-Frequency Operation:** 1.6MHz for reduced noise  
- **Soft-Start Function:** Minimizes inrush current  
- **Undervoltage Lockout (UVLO):** Ensures proper operation  
- **Thermal Shutdown Protection:** Prevents overheating  
- **Small Footprint:** Suitable for space-constrained designs  

This information is based solely on the LM2757TMX datasheet.

Switched Capacitor Boost Regulator with High Impedance Output in Shutdown