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LP3981IMM-2.8/NOPB from NSC,National Semiconductor

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15.625ms

LP3981IMM-2.8/NOPB

Manufacturer: NSC

Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator 8-VSSOP -40 to 125

Partnumber Manufacturer Quantity Availability
LP3981IMM-2.8/NOPB,LP3981IMM28NOPB NSC 44000 In Stock

Description and Introduction

Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator 8-VSSOP -40 to 125 The LP3981IMM-2.8/NOPB is a low-dropout (LDO) voltage regulator manufactured by National Semiconductor (NSC).  

### **Key Specifications:**  
- **Output Voltage:** 2.8V (fixed)  
- **Output Current:** 300mA  
- **Dropout Voltage:** 200mV (typical at 300mA load)  
- **Input Voltage Range:** 2.5V to 6.5V  
- **Low Quiescent Current:** 75µA (typical)  
- **Low Noise:** 30µVRMS (typical)  
- **PSRR (Power Supply Rejection Ratio):** 70dB at 1kHz  
- **Package:** 8-pin VSSOP (MSOP)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Protection Features:** Thermal shutdown, current limit  

### **Description:**  
The LP3981 is a high-performance LDO regulator designed for battery-powered applications. It provides a stable 2.8V output with low noise and high PSRR, making it suitable for noise-sensitive circuits like RF and analog systems.  

### **Features:**  
- Ultra-low dropout voltage  
- Stable with low-ESR ceramic capacitors  
- Fast transient response  
- Thermal shutdown and current limit protection  
- RoHS-compliant and lead-free  

This regulator is commonly used in portable electronics, wireless devices, and precision analog applications.

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