MB3800 Datasheet, PDF (2/21 Pages) Fujitsu Component Limited. – Switching Regulator Controller (Low Voltage)

MB3800
Contents
Pin Assignment ................................................................ 3
Pin Description ................................................................. 3
Block Diagram .................................................................. 4
Absolute Maximum Ratings ............................................ 4
Recommended Operating Conditions ............................ 5
Electrical Characteristics ................................................. 6
Diagram ............................................................................ 7
How to Set the Time Constant for Soft Start and
Short Circuit Detection .................................................... 8
Soft Start ..................................................................... 8
Short Circuit Protection ............................................... 8
Typical Characteristics .................................................... 9
Functional Description ................................................... 12
Switching Regulator Function .................................... 12
Power Supply Control Function ................................. 12
Other Functions ......................................................... 13
Application Example ..................................................... 13
Notes On Use .................................................................. 13
Ordering Information ...................................................... 14
RoHS Compliance Information of Lead (Pb)
Free version .................................................................... 14
Marking Format (Lead Free version) ........................... 15
Labeling Sample (Lead free version) ........................... 16
MB3800PF-❏❏❏E1, MB3800PNF-❏❏❏E1
Recommended Conditions of Moisture
Sensitivity Level ............................................................. 17
Package Dimensions ...................................................... 18
Document History ........................................................... 20
Document Number: 002-08716 Rev. *A
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