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LM2641 Dual Adjustable Step-Down Switching Power Supply Controller

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Description

LM2641 Dual Adjustable Step-Down Switching Power Supply Controller January 2000 LM2641 Dual Adjustable Step-Down Switching Power Supply Controller G.
The LM2641 is a dual step-down power supply controller intended for application in notebook personal computers and other battery-powered equipment.

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Datasheet Specifications

Part number
LM2641
Manufacturer
National Semiconductor
File Size
466.72 KB
Datasheet
LM2641_NationalSemiconductor.pdf
Description
Dual Adjustable Step-Down Switching Power Supply Controller

Features

* n 300 kHz fixed-frequency switching n Switching synchronization with an external signal up to 400 kHz n Optional pulse-skipping mode n Adjustable secondary feedback n Input undervoltage lockout n Output undervoltage shutdown protection n Output overvoltage shutdown protection n Programmable soft-sta

Applications

* n Notebook and subnotebook computers n Wireless data terminals n Battery-powered instruments Connection Diagram and Ordering Information 28-Lead TSSOP (MTC) DS100949-1 Top View Order Number LM2641MTC-ADJ See NS Package Number MTC28 © 2000 National Semiconductor Corporation DS100949 www. nationa

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