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TL317 from TI,Texas Instruments

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TL317

Manufacturer: TI, TEXAS

3-Terminal, 100mA Adjustable Positive Voltage Regulator

Partnumber Manufacturer Quantity Availability
TL317 TI, TEXAS 780 In Stock

Description and Introduction

3-Terminal, 100mA Adjustable Positive Voltage Regulator The TL317 is a three-terminal adjustable positive voltage regulator manufactured by Texas Instruments. Below are its specifications, descriptions, and features based on factual information from Ic-phoenix technical data files:

### **Specifications:**  
- **Output Voltage Range:** 1.25V to 32V  
- **Output Current:** Up to 100mA  
- **Input Voltage Range:** Up to 40V  
- **Line Regulation:** 0.01%/V (typical)  
- **Load Regulation:** 0.1% (typical)  
- **Operating Temperature Range:** 0°C to 125°C  
- **Package Types:** TO-92, SOT-89  

### **Descriptions:**  
- The TL317 is a low-current, adjustable voltage regulator designed for applications requiring precise output voltage control.  
- It operates similarly to the LM317 but is optimized for lower current applications (up to 100mA).  
- The device requires only two external resistors to set the output voltage.  

### **Features:**  
- **Adjustable Output:** Set with two external resistors.  
- **Low Quiescent Current:** Typically 50µA.  
- **Thermal Overload Protection:** Safeguards the regulator during excessive power dissipation.  
- **Short-Circuit Protection:** Prevents damage in case of output short circuits.  
- **Stable with Low-ESR Capacitors:** Works reliably with ceramic or tantalum capacitors.  

This information is based on Texas Instruments' official documentation for the TL317.

Application Scenarios & Design Considerations

3-Terminal, 100mA Adjustable Positive Voltage Regulator

Alternative Part Number

  • LM317L --: Same 3-terminal adjustable positive voltage regulator family with 100 mA class output, widely used as a direct functional substitute for TL317.
  • LM317 --: Standard adjustable positive voltage regulator with identical 1.25V reference and adjustable output, higher current capability and broad availability.
  • LM350 --: Adjustable positive voltage regulator in the same topology with higher current rating, suitable when extra current headroom is acceptable.
  • LM317T --: Industry-standard adjustable positive voltage regulator in the same TO-220 package with equivalent 1.5A current rating and adjustable output, widely available and pin-compatible.
  • LM350T --: Higher-current adjustable regulator (3A) in TO-220 that can directly replace the TL317 in most circuits with the same adjustment scheme and improved load capability.
  • LT317AT --: Adjustable positive regulator with the same 1.5A rating and TO-220 footprint, offering comparable or better regulation performance as a drop-in substitute.

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