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LP3907QSQX-JJXP/NOPB Datasheet(PDF) 2 Page - Texas Instruments |
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LP3907QSQX-JJXP/NOPB Datasheet(HTML) 2 Page - Texas Instruments |
2 / 58 page ![]() 2 LP3907 SNVS511S – JUNE 2007 – REVISED APRIL 2016 www.ti.com Product Folder Links: LP3907 Submit Documentation Feedback Copyright © 2007–2016, Texas Instruments Incorporated Table of Contents 1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Revision History..................................................... 2 5 Device Comparison Tables................................... 3 6 Pin Configuration and Functions ......................... 4 7 Specifications......................................................... 6 7.1 Absolute Maximum Ratings ...................................... 6 7.2 ESD Ratings.............................................................. 6 7.3 Recommended Operating Conditions (Bucks).......... 6 7.4 Thermal Information .................................................. 7 7.5 General Electrical Characteristics............................ 7 7.6 Low Dropout Regulators, LDO1 And LDO2............. 8 7.7 Buck Converters SW1, SW2.................................... 8 7.8 I/O Electrical Characteristics.................................... 9 7.9 Power-On Reset (POR) Threshold/Function .......... 9 7.10 I2C Interface Timing Requirements ....................... 9 7.11 Typical Characteristics — LDO............................. 10 7.12 Typical Characteristics — Bucks .......................... 12 7.13 Typical Characteristics — Buck1 .......................... 13 7.14 Typical Characteristics — Buck2 .......................... 14 7.15 Typical Characteristics — Bucks .......................... 15 8 Detailed Description ............................................ 17 8.1 Overview ................................................................. 17 8.2 Functional Block Diagram ....................................... 17 8.3 Feature Description................................................. 18 8.4 Device Functional Modes........................................ 26 8.5 Programming .......................................................... 27 8.6 Register Maps ........................................................ 30 9 Application and Implementation ........................ 40 9.1 Application Information............................................ 40 9.2 Typical Application ................................................. 40 10 Power Supply Recommendations ..................... 46 10.1 Analog Power Signal Routing ............................... 46 11 Layout................................................................... 47 11.1 DSBGA Layout Guidelines.................................... 47 11.2 Layout Example .................................................... 48 11.3 Thermal Considerations of WQFN Package......... 48 12 Device and Documentation Support ................. 49 12.1 Documentation Support ........................................ 49 12.2 Trademarks ........................................................... 49 12.3 Community Resources.......................................... 49 12.4 Electrostatic Discharge Caution ............................ 49 12.5 Glossary ................................................................ 49 13 Mechanical, Packaging, and Orderable Information ........................................................... 49 4 Revision History NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision R (May 2015) to Revision S Page • Added additional items to Applications .................................................................................................................................. 1 • Changed symbol " θn" to "eN" in Low Dropout Regulators, LDO1 And LDO2 Electrical Char table ....................................... 8 Changes from Revision Q (January 2015) to Revision R Page • Added last sentence to "NOTE" .......................................................................................................................................... 21 Changes from Revision P (November 2014) to Revision Q Page • Changed to new Default Device Options table with updated and additional values .............................................................. 3 • Changed Handling Ratings table to ESD Ratings table ........................................................................................................ 6 • Added updated Thermal Information ..................................................................................................................................... 7 Changes from Revision O (May 2013) to Revision P Page • Added Device Information and Handling Rating tables, Feature Description, Device Functional Modes, Application and Implementation, Power Supply Recommendations, Layout, Device and Documentation Support, and Mechanical, Packaging, and Orderable Information sections; moved some curves to Application Curves section .............. 1 |
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