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LM25019SD 데이터시트(PDF) 2 Page - Texas Instruments |
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LM25019SD 데이터시트(HTML) 2 Page - Texas Instruments |
2 / 28 page LM25019 SNVS952E – DECEMBER 2012 – REVISED NOVEMBER 2015 www.ti.com Table of Contents 7.3 Feature Description................................................. 10 1 Features .................................................................. 1 7.4 Device Functional Modes........................................ 15 2 Applications ........................................................... 1 8 Application and Implementation ........................ 16 3 Description ............................................................. 1 8.1 Application Information............................................ 16 4 Revision History..................................................... 2 8.2 Typical Application .................................................. 16 5 Pin Configuration and Functions ......................... 4 9 Power Supply Recommendations ...................... 20 6 Specifications......................................................... 5 10 Layout................................................................... 20 6.1 Absolute Maximum Ratings ..................................... 5 10.1 Layout Guidelines ................................................. 20 6.2 ESD Ratings.............................................................. 5 10.2 Layout Example .................................................... 20 6.3 Recommended Operating Conditions ....................... 5 11 Device and Documentation Support ................. 21 6.4 Thermal Information ................................................. 5 11.1 Documentation Support ........................................ 21 6.5 Electrical Characteristics........................................... 6 11.2 Community Resources.......................................... 21 6.6 Switching Characteristics .......................................... 6 11.3 Trademarks ........................................................... 21 6.7 Typical Characteristics .............................................. 7 11.4 Electrostatic Discharge Caution ............................ 21 7 Detailed Description .............................................. 9 11.5 Glossary ................................................................ 21 7.1 Overview ................................................................... 9 12 Mechanical, Packaging, and Orderable 7.2 Functional Block Diagram ......................................... 9 Information ........................................................... 21 4 Revision History Changes from Revision D (December 2014) to Revision E Page • Changed 14 V to 13 V in VCC Regulator section .................................................................................................................. 10 • Changed 8 to 4 on equation in Input Capacitor section ....................................................................................................... 18 • Changed 0.06 μF to 0.12 μF in Input Capacitor section ...................................................................................................... 18 Changes from Revision C (December 2013) to Revision D Page • Added Pin Configuration and Functions section, ESD Rating table, Feature Description section, Device Functional Modes, Application and Implementation section, Power Supply Recommendations section, Layout section, Device and Documentation Support section, and Mechanical, Packaging, and Orderable Information section .............................. 1 • Changed Soft-Start Circuit graphic....................................................................................................................................... 14 • Changed Frequency Selection section, Inductor Selection section, Output Capacitor section, Input Capacitor section, and UVLO Resistors section ................................................................................................................................... 17 • Changed Series Ripple Resistor RC section to Type III Ripple Circuit ................................................................................ 18 Changes from Revision B (December 2013) to Revision C Page • Added Thermal Parameters .................................................................................................................................................. 5 Changes from Revision A (September 2013) to Revision B Page • Changed formatting throughout document to the TI standard ............................................................................................... 1 • Changed minimum operating input voltage from 9 V to 7.5 V in Features ........................................................................... 1 • Changed minimum operating input voltage from 9 V to 7.5 V in Typical Application ........................................................... 1 • Changed minimum operating input voltage from 9 V to 7.5 V in Pin Descriptions ............................................................... 4 • Added Absolute Maximum Junction Temperature.................................................................................................................. 5 • Changed minimum operating input voltage from 9 V to 7.5 V in Recommended Operating Conditions .............................. 5 2 Submit Documentation Feedback Copyright © 2012–2015, Texas Instruments Incorporated Product Folder Links: LM25019 |
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