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LP2981AIM5-3.8 from NS,National Semiconductor

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LP2981AIM5-3.8

Manufacturer: NS

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

Partnumber Manufacturer Quantity Availability
LP2981AIM5-3.8,LP2981AIM538 NS 250 In Stock

Description and Introduction

Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages The LP2981AIM5-3.8 is a low-dropout (LDO) voltage regulator manufactured by National Semiconductor (NS).  

### **Specifications:**  
- **Output Voltage:** 3.8V (fixed)  
- **Output Current:** 100mA  
- **Dropout Voltage:** 300mV (typical at full load)  
- **Input Voltage Range:** Up to 16V  
- **Low Quiescent Current:** 75µA (typical)  
- **Low Shutdown Current:** <1µA  
- **Package:** SOT-23-5  
- **Operating Temperature Range:** -40°C to +125°C  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 0.05%/mA (typical)  
- **Thermal Shutdown Protection:** Yes  
- **Reverse Battery Protection:** No  

### **Descriptions:**  
The LP2981AIM5-3.8 is a precision LDO regulator designed for battery-powered applications requiring stable voltage regulation. It features low dropout, low quiescent current, and thermal shutdown protection.  

### **Features:**  
- Stable with low-ESR ceramic capacitors  
- Low noise operation  
- Fast transient response  
- Thermal shutdown and current limit protection  
- Small SOT-23-5 package for space-constrained applications  

This regulator is suitable for portable electronics, battery-powered devices, and other applications requiring a stable 3.8V supply.

Partnumber Manufacturer Quantity Availability
LP2981AIM5-3.8,LP2981AIM538 NATIONAL 9900 In Stock

Description and Introduction

Micropower 100 mA Ultra Low-Dropout Regulator in SOT-23 and micro SMD Packages The LP2981AIM5-3.8 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:** 3.8V (fixed)  
- **Output Current:** 100mA  
- **Dropout Voltage:** 300mV (typical at 100mA load)  
- **Input Voltage Range:** 2.5V to 16V  
- **Quiescent Current:** 75µA (typical)  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 0.05%/mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-23-5 (Miniature 5-Pin Package)  

### **Descriptions:**
- The LP2981AIM5-3.8 is a precision voltage regulator designed for battery-powered applications.  
- It provides a stable 3.8V output with low noise and high PSRR (Power Supply Rejection Ratio).  
- The device includes thermal shutdown and current limit protection.  

### **Features:**
- **Low Dropout Voltage:** Operates efficiently with very small headroom.  
- **Low Quiescent Current:** Ideal for battery-operated devices.  
- **High PSRR:** 60dB at 1kHz (improves noise rejection).  
- **Thermal Shutdown Protection:** Prevents damage from overheating.  
- **Current Limit Protection:** Safeguards against excessive loads.  
- **Stable with Low-ESR Capacitors:** Works with ceramic capacitors (≥1µF).  

This LDO is commonly used in portable electronics, medical devices, and precision analog circuits requiring a stable 3.8V supply.

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