Micropower 150 mA Low-Noise Low-Dropout Regulator in SOT-23 and micro SMD packages for Applications with Output Voltages [Less_Than_Or_Equal] ... The LP2985ITL-1.8 is a low-dropout (LDO) voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 1.8V (fixed)  
- **Output Current:** 150mA  
- **Dropout Voltage:** 300mV (typical at full load)  
- **Input Voltage Range:** 2.5V to 16V  
- **Low Quiescent Current:** 75µA (typical)  
- **Low Noise:** 30µVRMS (typical)  
- **High PSRR:** 70dB (at 1kHz)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5  

### **Descriptions and Features:**  
- Designed for battery-powered applications requiring stable voltage regulation.  
- Includes thermal shutdown and current limit protection.  
- Stable with low-ESR ceramic capacitors (≥1µF).  
- Suitable for noise-sensitive applications due to low output noise.  
- RoHS-compliant.  

This information is based on the manufacturer's datasheet. For detailed performance characteristics, refer to the official documentation.