Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- ELECTRICAL CHARACTERISTICS
- TYPICAL PERFORMANCE CHARACTERISTICS
- OPERATION
- CURRENT REGULATOR OPERATION
- PROTECTION
- DESIGN PROCEDURE
- SETTING LED CURRENT CONTROL
- FIXED LED CURRENT
- ADJUSTABLE LED CURRENT
- INPUT CAPACITOR SELECTION
- RECOMMENDED OPERATING FREQUENCY AND ON TIME "TIMEON" CALCULATION
- TIMING COMPONENTS (RON and CON)
- INDUCTOR SELECTION
- POWER FET SELECTION
- DIM FET SELECTION
- BOOTSTRAP CAPACITORS
- SOFT-START CAPACITOR
- ENABLE OPERATION
- PWM DIM OPERATION
- LAYOUT CONSIDERATIONS
- APPLICATION INFORMATION
- Revision History
LM3434
SNVS619B –MARCH 2010–REVISED MAY 2013
www.ti.com
Table 2. Some Recommended Input/Bypass Capacitors (Others May Be Used)
Manufacturer Capacitor Contact Information
Vishay Sprague 293D, 592D, and 595D series tantalum www.vishay.com
407-324-4140
Taiyo Yuden High capacitance MLCC ceramic www.t-yuden.com
408-573-4150
ESRD seriec Polymer Aluminum Electrolytic
Cornell Dubilier www.cde.com
SPV and AFK series V-chip series
MuRata High capacitance MLCC ceramic www.murata.com
Table 3. Some Recommended MOSFETs (Others May Be Used)
Manufacturer MOSFET Contact Information
Siliconix Si7386DP (Main FET, DIM FET) www.vishay.com/company/bra
Si7668ADP (Synchronous FET) nds/siliconix/
Si7790DP (Main FET, Synchronous FET, DIM FET)
ON Semiconductor NTMFS4841NHT1G (Main FET, Synchronous FET, DIM FET) www.onsemi.com
14 Submit Documentation Feedback Copyright © 2010–2013, Texas Instruments Incorporated
Product Folder Links: LM3434