link to page 1 link to page 1 link to page 1 link to page 1 link to page 3 link to page 3 link to page 3 link to page 3 link to page 4 link to page 5 link to page 6 link to page 8 link to page 9 link to page 9 link to page 9 link to page 10 link to page 11 link to page 12 link to page 12 link to page 15 link to page 16 link to page 17 link to page 18 link to page 18 LTC3421 TABLE OF CONTENTS Features .. 1Applications ... 1Typical Application ... 1Description... 1Absolute Maximum Ratings ... 4Order Information ... 4Electrical Characteristics .. 4Package/Order Information .. 4Electrical Characteristics .. 5Typical Performance Characteristics .. 6Pin Functions .. 7Block Diagram ... 9Operation..10 Low Voltage Start-Up .. 10 Low Noise Fixed Frequency Operation .. 10 Burst Mode Operation ... 11 Output Disconnect and Inrush Limiting .. 12 Applications Information ...13 Component Selection .. 13 Typical Application ..16Package Description ..17Revision History ...18Typical Application ..19Related Parts ...19 Rev. A 2 For more information www.analog.com Document Outline Description Typical Application Absolute Maximum Ratings Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Package Description Typical Application Related Parts Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Package/Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Low Voltage Start-Up Low Noise Fixed Frequency Operation Burst Mode Operation Output Disconnect and Inrush Limiting Applications Information Component Selection Typical Application Package Description Revision History Typical Application Related Parts