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LM2601 - Adapter Interface Circuit

General Description

The Adapter Interface Circuit (AIC) is used to sense the presence of an external power source for a portable computer.

It notifies the computer if a source is present and indicates if the source is appropriate for charging battery packs inside the computer.

Key Features

  • n Detects an AC-DC adapter suitable for battery charging or an airplane or car power line adapter that should not be used for battery charging n Allows the implementation of intelligent switchover circuits for portable systems Block Diagram 10130901 © 2001 National Semiconductor Corporation DS101309 www. national. com LM2601 Pin Configuration TSSOP-14 10130902 Ordering Information Order Number LM2601MTC LM2601MTCX Package Number MTC14 MTC14 Package Type TSSOP-14 TSSOP-14 Supplied As.

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LM2601 Adapter Interface Circuit April 2001 LM2601 Adapter Interface Circuit General Description The Adapter Interface Circuit (AIC) is used to sense the presence of an external power source for a portable computer. It notifies the computer if a source is present and indicates if the source is appropriate for charging battery packs inside the computer. The AIC also senses an adapter current and its direction. AIC isolates the adapter and signals the computer when peak current threshold is exceeded. LM2601 drives P-channel FETs. No high current rated Schottky diode is required to implement an adapter switchover circuit.