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LP3981ILD-3.0 from NSC,National Semiconductor

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LP3981ILD-3.0

Manufacturer: NSC

Micropower/ 300mA Ultra Low-Dropout CMOS Voltage

Partnumber Manufacturer Quantity Availability
LP3981ILD-3.0,LP3981ILD30 NSC 1280 In Stock

Description and Introduction

Micropower/ 300mA Ultra Low-Dropout CMOS Voltage The LP3981ILD-3.0 is a low-dropout (LDO) voltage regulator manufactured by National Semiconductor (NSC). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Voltage:** 3.0V (fixed)  
- **Output Current:** 300mA  
- **Dropout Voltage:** 200mV (typical at 300mA load)  
- **Input Voltage Range:** 2.5V to 6.0V  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Quiescent Current:** 75µA (typical)  
- **Package:** 5-Pin SOT-23  
- **Operating Temperature Range:** -40°C to +125°C  

### **Descriptions:**  
- The LP3981ILD-3.0 is a high-performance LDO regulator designed for battery-powered applications.  
- It features low noise, high PSRR (Power Supply Rejection Ratio), and fast transient response.  
- Includes built-in protection features such as thermal shutdown and current limit.  

### **Features:**  
- **Low Dropout Voltage:** 200mV at 300mA load  
- **Low Quiescent Current:** 75µA (typical)  
- **High PSRR:** 60dB at 1kHz  
- **Thermal Shutdown Protection**  
- **Current Limit Protection**  
- **Stable with Low-ESR Ceramic Capacitors**  
- **Small SOT-23 Package for Space-Constrained Applications**  

This information is sourced from the manufacturer's datasheet.

Partnumber Manufacturer Quantity Availability
LP3981ILD-3.0,LP3981ILD30 NS 9344 In Stock

Description and Introduction

Micropower/ 300mA Ultra Low-Dropout CMOS Voltage The LP3981ILD-3.0 is a low-dropout (LDO) voltage regulator manufactured by Texas Instruments (formerly National Semiconductor, NS).  

### **Key Specifications:**  
- **Output Voltage:** 3.0V (fixed)  
- **Output Current:** 300mA  
- **Dropout Voltage:** 130mV (typical) at 300mA  
- **Input Voltage Range:** 2.5V to 6.5V  
- **Low Quiescent Current:** 75µA (typical)  
- **High PSRR:** 75dB at 1kHz  
- **Package:** 5-Pin SOT-23 (DBV)  
- **Operating Temperature Range:** -40°C to +125°C  

### **Features:**  
- Ultra-low dropout voltage  
- Low noise and high PSRR (Power Supply Rejection Ratio)  
- Stable with low-ESR ceramic capacitors (≥1µF)  
- Thermal shutdown and current limit protection  
- Fast transient response  
- RoHS compliant  

This regulator is designed for battery-powered applications, portable devices, and noise-sensitive circuits.

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