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LP2981IM5-2.9 from NATIONAL,National Semiconductor

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LP2981IM5-2.9

Manufacturer: NATIONAL

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

Partnumber Manufacturer Quantity Availability
LP2981IM5-2.9,LP2981IM529 NATIONAL 2850 In Stock

Description and Introduction

Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages The LP2981IM5-2.9 is a low-dropout (LDO) voltage regulator manufactured by National Semiconductor (now part of Texas Instruments). Below are its key specifications, descriptions, and features:

### **Specifications:**
- **Output Voltage:** 2.9V (fixed)  
- **Output Current:** 100mA  
- **Dropout Voltage:** 300mV (typical at 100mA load)  
- **Input Voltage Range:** 2.5V to 16V  
- **Quiescent Current:** 75µA (typical)  
- **Package:** SOT-23-5 (IM5)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 0.05%/mA (typical)  
- **PSRR (Power Supply Rejection Ratio):** 60dB at 1kHz  

### **Descriptions:**
- Designed for battery-powered applications requiring stable, low-noise voltage regulation.  
- Features low dropout voltage, making it suitable for applications with tight input-output differentials.  
- Includes thermal shutdown and current limit protection for enhanced reliability.  

### **Features:**
- **Low Quiescent Current:** Optimized for power-sensitive applications.  
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limit Protection:** Safeguards against excessive load currents.  
- **Stable with Low-ESR Capacitors:** Works with ceramic capacitors (≥1µF).  
- **Low Noise Output:** Suitable for noise-sensitive analog and RF circuits.  

This regulator is commonly used in portable electronics, embedded systems, and power management applications.

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