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Part Number
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LM2641 |
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Manufacturer
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National Semiconductor |
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Description
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Dual Adjustable Step-Down Switching Power Supply Controller |
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Published
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Mar 22, 2005 |
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Detailed Description
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LM2641 Dual Adjustable Step-Down Switching Power Supply Controller
January 2000
LM2641 Dual Adjustable Step-Down Switc...
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Datasheet
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LM2641
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Overview
LM2641 Dual Adjustable Step-Down Switching Power Supply Controller
January 2000
LM2641 Dual Adjustable Step-Down Switching Power Supply Controller
General Description
The LM2641 is a dual step-down power supply controller intended for application in notebook personal computers and other battery-powered equipment.
Fixed-frequency synchronous drive of logic-level N-channel power MOSFETs is combined with an optional pulse-skipping mode to achieve ultra efficient power conversion over a 1000:1 load current range.
The pulse-skipping mode can be disabled in favor of fixed-frequency operation regardless of the load current level.
High DC gain and current-mode feedback control assure excellent lin...
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