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LM2631

National Semiconductor
Part Number LM2631
Manufacturer National Semiconductor
Description Synchronous Step-Down Power Supply Controller
Published Mar 22, 2005
Detailed Description LM2631 Synchronous Step-Down Power Supply Controller April 1999 LM2631 Synchronous Step-Down Power Supply Controller G...
Datasheet PDF File LM2631 PDF File

LM2631
LM2631

Overview
LM2631 Synchronous Step-Down Power Supply Controller April 1999 LM2631 Synchronous Step-Down Power Supply Controller General Description The LM2631 controller provides all the active functions for step-down (buck) switching converters.
These dc-to-dc converters provide core CPU power in battery-operated systems.
High efficiency is achieved by using synchronous rectification and pulse-skipping mode operation at light load.
Inexpensive N-channel MOSFETs are used to reduce system cost.
Bootstrap circuit is used to drive the high-side N-channel MOSFET.
Current mode control scheme is used to improve line regulation and transient response, also provides cycle-by-cycle current limiting.
The opera...


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