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LP2981AIM5-4.0 from NS,National Semiconductor

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LP2981AIM5-4.0

Manufacturer: NS

Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages

Partnumber Manufacturer Quantity Availability
LP2981AIM5-4.0,LP2981AIM540 NS 284 In Stock

Description and Introduction

Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages The LP2981AIM5-4.0 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Specifications:**  
- **Output Voltage:** 4.0V (fixed)  
- **Output Current:** 100mA  
- **Dropout Voltage:** 300mV (typical at 100mA load)  
- **Input Voltage Range:** Up to 16V  
- **Accuracy:** ±2% over line, load, and temperature  
- **Low Quiescent Current:** 75µA (typical)  
- **Low Shutdown Current:** 0.01µA (typical)  
- **Package:** SOT-23-5 (Miniature 5-Pin Package)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Protection Features:** Thermal shutdown, current limit  

### **Descriptions:**  
The LP2981AIM5-4.0 is a high-performance LDO regulator designed for battery-powered applications requiring a stable 4.0V supply. It offers low dropout, low noise, and excellent line/load regulation.  

### **Features:**  
- **Ultra-Low Dropout Voltage** for extended battery life  
- **Low Noise** (without bypass: 30µV RMS typical)  
- **Stable with Low-ESR Ceramic Capacitors** (≥1µF)  
- **Thermal Shutdown and Current Limit Protection**  
- **Fast Transient Response**  
- **Wide Input Voltage Range** (up to 16V)  

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

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