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LP3981IMMX-2.8

Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator

Partnumber Manufacturer Quantity Availability
LP3981IMMX-2.8,LP3981IMMX28 7000 In Stock

Description and Introduction

Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator The LP3981IMMX-2.8 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments. Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 2.8V (fixed)  
- **Output Current:** 300mA  
- **Dropout Voltage:** 300mV (typical) at 300mA load  
- **Input Voltage Range:** 2.5V to 6.5V  
- **Quiescent Current:** 75µA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** 8-pin VSSOP (MSOP)  

### **Descriptions:**  
- The LP3981 is a high-performance LDO regulator designed for battery-powered applications.  
- It provides stable voltage regulation with low noise and high PSRR (Power Supply Rejection Ratio).  
- Features thermal shutdown and current limit protection for reliability.  

### **Features:**  
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **Low Noise:** Optimized for noise-sensitive applications.  
- **High PSRR:** 60dB at 1kHz for improved power supply noise rejection.  
- **Fast Transient Response:** Maintains stable output under load variations.  
- **Thermal Shutdown & Current Limit Protection:** Protects the device from overheating and overcurrent conditions.  
- **Stable with Low-ESR Ceramic Capacitors:** Reduces external component count.  

This information is based solely on the manufacturer's datasheet.

Partnumber Manufacturer Quantity Availability
LP3981IMMX-2.8,LP3981IMMX28 NS 612 In Stock

Description and Introduction

Micropower, 300mA Ultra Low-Dropout CMOS Voltage Regulator The LP3981IMMX-2.8 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Output Voltage:** 2.8V (fixed)  
- **Output Current:** 300mA  
- **Dropout Voltage:** 300mV (typical at 300mA load)  
- **Input Voltage Range:** 2.5V to 6V  
- **Quiescent Current:** 75µA (typical)  
- **Package:** 8-pin VSSOP (MSOP)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Accuracy:** ±2% over line, load, and temperature  
- **Low Noise:** 30µVRMS (typical)  
- **Protection Features:** Overcurrent and thermal shutdown  

### **Descriptions & Features:**  
- Ultra-low dropout voltage for extended battery life.  
- Stable with low-ESR ceramic capacitors (≥1µF).  
- Low quiescent current for power-sensitive applications.  
- Fast transient response for dynamic loads.  
- Thermal shutdown and current limit protection.  
- Suitable for portable and battery-powered devices.  

This regulator is commonly used in applications such as smartphones, portable electronics, and embedded systems requiring stable voltage regulation.

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