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SPX3940AM3-2.5 from N/A

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SPX3940AM3-2.5

Manufacturer: N/A, SIPEX

1A Low Dropout Voltage Regulator Fixed Output, Fast Response

Partnumber Manufacturer Quantity Availability
SPX3940AM3-2.5,SPX3940AM325 N/A, SIPEX 2535 In Stock

Description and Introduction

1A Low Dropout Voltage Regulator Fixed Output, Fast Response The SPX3940AM3-2.5 is a low-dropout (LDO) voltage regulator manufactured by SIPEX (now part to Microchip Technology). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:

### **Specifications:**  
- **Manufacturer:** SIPEX (now Microchip)  
- **Output Voltage:** 2.5V (fixed)  
- **Output Current:** 1A  
- **Dropout Voltage:** Typically 340mV at full load  
- **Input Voltage Range:** Up to 16V  
- **Line Regulation:** 0.02%/V (typical)  
- **Load Regulation:** 0.04%/A (typical)  
- **Quiescent Current:** 5mA (typical)  
- **Operating Temperature Range:** -40°C to +125°C  
- **Package:** SOT-223  

### **Descriptions:**  
- The SPX3940AM3-2.5 is a high-performance LDO regulator designed for applications requiring stable and precise voltage regulation.  
- It provides a fixed 2.5V output with a maximum current of 1A.  
- The device features low dropout voltage, making it suitable for battery-powered applications.  
- It includes built-in protection features such as thermal shutdown and current limiting.  

### **Features:**  
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **High Accuracy:** Tight output voltage tolerance (±1%).  
- **Thermal Shutdown Protection:** Prevents damage due to overheating.  
- **Current Limit Protection:** Safeguards against excessive load conditions.  
- **Stable with Low-ESR Capacitors:** Works reliably with ceramic or tantalum output capacitors.  

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

Application Scenarios & Design Considerations

1A Low Dropout Voltage Regulator Fixed Output, Fast Response

Alternative Part Number

  • LM3940IMP-2.5 --: Low-dropout 2.5V linear regulator in SOT-223 with similar current capability and pinout, widely available and a common drop-in substitute.
  • MIC2941A-2.5 --: 2.5V LDO regulator with comparable dropout and output current, suitable replacement when SPX3940 is unavailable.
  • AMS1117-2.5 --: Popular 2.5V LDO in SOT-223 package with similar electrical characteristics, low cost and broad availability.
  • LP2951-2.5 --: 2.5V LDO regulator with comparable dropout and output current, available in SOT-223, suitable for the same applications.
  • MIC5209-2.5YM --: 2.5V low-dropout regulator in SOT-223 with similar electrical characteristics and a different series name for easy distinction.

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