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SPX1581T5 from SIPEX

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SPX1581T5

Manufacturer: SIPEX

5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed

Partnumber Manufacturer Quantity Availability
SPX1581T5 SIPEX 6698 In Stock

Description and Introduction

5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed The SPX1581T5 is a low dropout (LDO) voltage regulator manufactured by SIPEX (now part of Exar Corporation). Below are its key specifications, descriptions, and features:

### **Specifications:**  
- **Output Voltage Options:** Fixed (1.8V, 2.5V, 3.3V, 5.0V) or adjustable (1.25V to 5.5V).  
- **Output Current:** Up to 1A.  
- **Dropout Voltage:** 1.3V (typical) at full load.  
- **Input Voltage Range:** Up to 16V.  
- **Line Regulation:** 0.05% (typical).  
- **Load Regulation:** 0.1% (typical).  
- **Quiescent Current:** 10mA (typical).  
- **Operating Temperature Range:** -40°C to +125°C.  
- **Package Type:** TO-263-5 (D²PAK).  

### **Descriptions:**  
- The SPX1581T5 is a high-performance LDO regulator designed for applications requiring stable voltage with low noise.  
- It features thermal shutdown and current limit protection.  
- Suitable for industrial, automotive, and consumer electronics.  

### **Features:**  
- **Low Dropout Voltage:** Ensures efficient operation even with small input-output differentials.  
- **High Accuracy:** Tight output voltage tolerance (±1%).  
- **Thermal Protection:** Prevents damage from overheating.  
- **Current Limiting:** Safeguards against excessive load currents.  
- **Wide Input Voltage Range:** Supports various power sources.  
- **Stable with Low-ESR Capacitors:** Works reliably with ceramic or tantalum capacitors.  

This information is based on the SIPEX datasheet for the SPX1581T5.

Application Scenarios & Design Considerations

5A Ultra Low Dropout Voltage Regulator Fast Response, Adjustable & Fixed

Alternative Part Number

  • LM1085IT-3.3 --: 3A low-dropout linear regulator in TO-220, functionally equivalent to the SPX1581T5 with similar dropout and current rating.
  • AMS1085CM-3.3 --: Pin-compatible 3A LDO regulator offering comparable electrical performance and a lower-cost alternative.
  • LT1085CT-3.3 --: Well-established 3A LDO regulator with similar dropout characteristics and TO-220 package compatibility.
  • LM1085IT-5.0 --: 5V fixed low-dropout linear regulator in TO-220, similar current capability and pinout, widely available and well documented.
  • LT1085CT-5 --: 5V fixed LDO regulator with comparable dropout and load current, TO-220 package, a common drop-in style replacement.
  • AMS1085CT-5.0 --: Low-cost 5V fixed LDO regulator in TO-220 with similar electrical ratings, suitable for cost-sensitive substitutions.

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