Datasheet LTM4691 (Analog Devices) - 2

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TABLE OF CONTENTS Features .. 1 Applications ... 1 Typical Application ... 1 Description... 1 Absolute Maximum Ratings ... 3 Order Information ... 3 Electrical Characteristics .. 3 Pin Configuration ... 3 Typical Performance Characteristics .. 5 Pin Functions .. 7 Block Diagram ... 8 Decoupling Requirements ... 8 Operation... 9 Applications Information ...10
VIN to VOUT Step-Down Ratios .. 10 Output Voltage Programming ... 10 Input Decoupling Capacitors ... 10 Output Decoupling Capacitors .. 10 Mode Selection .. 10 Operating Frequency and External Synchronization ... 11 Power GOOD .. 11 Output Overvoltage Protection .. 11 Output Voltage Soft-Start .. 12 Dropout Operation ... 12 Output Short-Circuit Protection and Recovery .. 12 Load Sharing .. 12 Using the Precision RUN Threshold ... 12 Thermal Considerations and Output Current Derating .. 13 Safety Considerations ... 16 Layout Checklist/Example ... 16
Applications Information ...17 Typical Applications ...18 Pin Configuration Table ...20
LTM4691 Component LGA Pinout .. 20
Package Description ..21 Package Photo ...22 Related Parts ...22
Rev. 0 2 For more information www.analog.com Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Order Information Electrical Characteristics Pin Configuration Typical Performance Characteristics Pin Functions Block Diagram Decoupling Requirements Operation Applications Information VIN to VOUT Step-Down Ratios Output Voltage Programming Input Decoupling Capacitors Output Decoupling Capacitors Mode Selection Operating Frequency and External Synchronization Power GOOD Output Overvoltage Protection Output Voltage Soft-Start Dropout Operation Output Short-Circuit Protection and Recovery Load Sharing Using the Precision RUN Threshold Thermal Considerations and Output Current Derating Safety Considerations Layout Checklist/Example Applications Information Typical Applications Pin Configuration Table LTM4691 Component LGA Pinout Package Description Package Photo Related Parts