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LM3644 Arkusz danych(PDF) 2 Page - Texas Instruments |
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LM3644 Arkusz danych(HTML) 2 Page - Texas Instruments |
2 / 41 page LM3644, LM3644TT SNVSA52D – AUGUST 2014 – REVISED SEPTEMBER 2015 www.ti.com Table of Contents 8.3 Feature Description ................................................ 13 1 Features .................................................................. 1 8.4 Device Functioning Modes...................................... 15 2 Applications ........................................................... 1 8.5 Programming........................................................... 19 3 Description ............................................................. 1 8.6 Register Descriptions .............................................. 21 4 Revision History..................................................... 2 9 Applications and Implementation ...................... 25 5 Device Comparison Table..................................... 2 9.1 Application Information............................................ 25 6 Pin Configuration and Functions ......................... 3 9.2 Typical Application ................................................. 25 7 Specifications......................................................... 4 10 Power Supply Recommendations ..................... 31 7.1 Absolute Maximum Ratings ...................................... 4 11 Layout................................................................... 31 7.2 ESD Ratings ............................................................ 4 11.1 Layout Guidelines ................................................. 31 7.3 Recommended Operating Conditions ....................... 4 11.2 Layout Example ................................................... 32 7.4 Thermal Information .................................................. 4 12 Device and Documentation Support ................. 33 7.5 Electrical Characteristics........................................... 5 12.1 Device Support...................................................... 33 7.6 Timing Requirements ............................................... 6 12.2 Related Documentation......................................... 33 7.7 Switching Characteristics .......................................... 6 12.3 Trademarks ........................................................... 33 7.8 Typical Characteristics .............................................. 6 12.4 Electrostatic Discharge Caution ............................ 33 8 Detailed Description ............................................ 12 12.5 Glossary ................................................................ 33 8.1 Overview ................................................................. 12 13 Mechanical, Packaging, and Orderable 8.2 Functional Block Diagram ...................................... 13 Information ........................................................... 33 4 Revision History Changes from Revision C (April 2015) to Revision D Page • Changed 0x00 to 0x02 - typo ............................................................................................................................................... 21 • Changed 0x40 to 0x04 - typo ............................................................................................................................................... 21 Changes from Revision B (November 2014) to Revision C Page • Added information about LM3644TT option ........................................................................................................................... 1 • Changed Handling Ratings to ESD Ratings; moved storage temp to Ab Max ..................................................................... 4 • Added full Thermal Information information .......................................................................................................................... 4 Changes from Revision A (October 2013) to Revision B Page • Changed '011' to '000' - typo ................................................................................................................................................ 24 Changes from Original (August 2014) to Revision A Page • Changed title from "1.5A Synchronous Boost White LED Driver with High Side Current Sources " to "Dual 1.5-A Current Source Camera Flash LED Driver" ........................................................................................................................... 1 • Added Note to beginning of Applications and Implementations section .............................................................................. 25 5 Device Comparison Table ORDERING PART NUMBER MAXIMUM TORCH CURRENT FLASH TIME-OUT RANGE PER CHANNEL LM3644YFFR 179 mA 10 ms to 400 ms LM3644TTYFFR 360 mA 40 ms to 1600 ms 2 Submit Documentation Feedback Copyright © 2014–2015, Texas Instruments Incorporated Product Folder Links: LM3644 LM3644TT |
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