link to page 1 Product Sample & Technical Tools & Support & Reference Folder Buy Documents Software Community Design LM1117 SNOS412N – FEBRUARY 2000 – REVISED JANUARY 2016 LM1117 800-mA Low-Dropout Linear Regulator1 Features3 Description The LM1117 is a low dropout voltage regulator with a • Available in 1.8 V, 2.5 V, 3.3 V, 5 V, and 1 dropout of 1.2 V at 800 mA of load current. Adjustable Versions • Space-Saving SOT-223 and WSON Packages The LM1117 is available in an adjustable version, which can set the output voltage from 1.25 to 13.8 V • Current Limiting and Thermal Protection with only two external resistors. In addition, it is • Output Current 800 mA available in five fixed voltages, 1.8 V, 2.5 V, 3.3 V, • Line Regulation 0.2% (Maximum) and 5 V. • Load Regulation 0.4% (Maximum) The LM1117 offers current limiting and thermal • Temperature Range shutdown. Its circuit includes a Zener trimmed bandgap reference to assure output voltage accuracy – LM1117: 0°C to 125°C to within ±1%. – LM1117I: −40°C to 125°C A minimum of 10-µF tantalum capacitor is required at the output to improve the transient response and 2 Applications stability. • Post Regulator for Switching DC–DC Converter Device Information(1) • High Efficiency Linear Regulators PART NUMBERPACKAGEBODY SIZE (NOM) • Battery Chargers SOT-223 (4) 6.50 mm × 3.50 mm • Portable Instrumentation TO-220 (3) 14.986 mm × 10.16 mm • Active SCSI Termination Regulator LM1117, TO-252 (3) 6.58 mm × 6.10 mm LM1117I WSON (8) 4.00 mm × 4.00 mm TO-263 (3) 10.18 mm × 8.41 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. Adjustable Output Regulator 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. Document Outline 1 Features 2 Applications 3 Description Table of Contents 4 Revision History 5 Pin Configuration and Functions 6 Specifications 6.1 Absolute Maximum Ratings 6.2 ESD Ratings 6.3 Recommended Operating Conditions 6.4 Thermal Information 6.5 LM1117 Electrical Characteristics 6.6 LM1117I Electrical Characteristics 6.7 Typical Characteristics 7 Detailed Description 7.1 Overview 7.2 Functional Block Diagram 7.3 Feature Description 7.3.1 Load Regulation 7.4 Device Functional Modes 7.4.1 Protection Diodes 8 Application and Implementation 8.1 Application Information 8.2 Typical Application 8.2.1 Design Requirements 8.2.2 Detailed Design Procedure 8.2.2.1 External Capacitors 8.2.3 Application Curve 8.3 System Examples 9 Power Supply Recommendations 10 Layout 10.1 Layout Guidelines 10.1.1 Heatsink Requirements 10.2 Layout Example 11 Device and Documentation Support 11.1 Community Resources 11.2 Trademarks 11.3 Electrostatic Discharge Caution 11.4 Glossary 12 Mechanical, Packaging, and Orderable Information Page 1 Page 1
