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 4 link to page 6 link to page 12 link to page 14 link to page 15 link to page 15 link to page 15 link to page 16 link to page 16 link to page 16 link to page 16 link to page 17 link to page 17 link to page 18 link to page 18 link to page 18 link to page 18 link to page 18 link to page 18 link to page 20 link to page 20 link to page 23 link to page 25 link to page 26 link to page 26 LTC3371 TABLE OF CONTENTS Features ... 1Applications Information ..18Applications .. 1 Buck Switching Regulator Output Voltage and Typical Application .. 1 Feedback Network .. 18 Description.. 1 Buck Regulators ... 18 Absolute Maximum Ratings .. 3 Combined Buck Power Stages .. 18 Pin Configuration .. 3 Input and Output Decoupling Capacitor Selection... 18 Order Information .. 3 PCB Considerations ..20 Electrical Characteristics ... 4Typical Applications ..20Typical Performance Characteristics ... 6Package Description ...23Pin Functions ..12Revision History ..25Block Diagram ...14Typical Application ...26Operation...15Related Parts ..26 Buck Switching Regulators ... 15 Buck Regulators with Combined Power Stages .. 15 Power Failure Reporting Via RST Pins .. 16 Temperature Monitoring and Overtemperature Protection ... 16 Programming the Operating Frequency .. 16 Windowed Watchdog Timer .. 17 Choosing the CT Capacitor .. 17 3371fb 2 For more information www.linear.com/LTC3371 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Pin Functions Block Diagram Operation Buck Switching Regulators Buck Regulators with Combined Power Stages Power Failure Reporting Via RST Pins Temperature Monitoring and Overtemperature Protection Programming the Operating Frequency Windowed Watchdog Timer Choosing the CT Capacitor Applications Information Buck Switching Regulator Output Voltage and Feedback Network Buck Regulators Combined Buck Power Stages Input and Output Decoupling Capacitor Selection PCB Considerations Typical Applications Package Description Revision History Typical Application Related Parts