MSS1048-152NL AD [Analog Devices], MSS1048-152NL Datasheet - Page 2

• Manufacturer Part Number: MSS1048-152NL
• Description: Dual 5 A, 20 V Synchronous Step-Down
• Manufacturer: AD [Analog Devices]

TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Typical Application Circuit ............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Functional Block Diagram .............................................................. 3
Specifications ..................................................................................... 4
Pin Configuration and Function Descriptions ............................. 7
Typical Performance Characteristics ............................................. 9
Theory of Operation ...................................................................... 16
REVISION HISTORY
2/12—Revision 0: Initial Version
ADP2325
Absolute Maximum Ratings ....................................................... 6
Thermal Resistance ...................................................................... 6
ESD Caution .................................................................................. 6
Control Scheme .......................................................................... 16
PWM Mode ................................................................................. 16
PFM Mode ................................................................................... 16
Precision Enable/Shutdown ...................................................... 16
Separate Input Voltages ............................................................. 16
Internal Regulator (INTVCC) .................................................. 16
Bootstrap Circuitry .................................................................... 17
Low-Side Driver .......................................................................... 17
Oscillator ..................................................................................... 17
Synchronization .......................................................................... 17
Soft Start ...................................................................................... 17
Peak Current-Limit and Short-Circuit Protection ................. 17
Voltage Tracking ......................................................................... 18
Parallel Operation....................................................................... 18
Power Good ................................................................................. 19
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Applications Information .............................................................. 20
Design Example .............................................................................. 24
External Components Recommendations .................................. 27
Typical Application Circuits ......................................................... 28
Packaging and Ordering Information ......................................... 32
Overvoltage Protection .............................................................. 19
Undervoltage Lockout ............................................................... 19
Thermal Shutdown .................................................................... 19
Input Capacitor Selection .......................................................... 20
Output Voltage Setting .............................................................. 20
Voltage Conversion Limitations ............................................... 20
Current-Limit Setting ................................................................ 20
Inductor Selection ...................................................................... 20
Output Capacitor Selection....................................................... 21
Low-Side Power Device Selection ............................................ 22
Programming UVLO Input ...................................................... 22
Compensation Components Design ....................................... 22
Output Voltage Setting .............................................................. 24
Current-Limit Setting ................................................................ 24
Frequency Setting ....................................................................... 24
Inductor Selection ...................................................................... 24
Output Capacitor Selection....................................................... 24
Low-Side MOSFET Selection ................................................... 25
Compensation Components ..................................................... 25
Soft Start Time Programming .................................................. 26
Input Capacitor Selection .......................................................... 26
Outline Dimensions ................................................................... 32
Ordering Guide .......................................................................... 32
Data Sheet