LM2601 Datasheet | Texas Instruments

OBSOLETE .ti. SNVS079B - MAY 2004 - REVISED AUGUST 2011 LM2601 Adapter Interface Circuit Check for Samples: LM2601 Features - 2 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 - Allows the Implementation of Intelligent Switchover Circuits for Portable Systems - LM2601 Shuts Down Automatically When Adapter is Removed - Low Leakage Current from Battery When Not Powered - Drives P-Channel FETs, No Schottky Diodes are Required - No Reverse Inrush Current from Battery Into the Adapter Output Capacitance - Allows for Battery Capacity Gas-Gauge Calibration Under System Software/Firmware Control - Adapter Over Current Threshold Programmable with External Resistors - Wide Input Range: 5V - 24V - Available in TSSOP Package APPLICATIONS - Portable puters - Portable IAs (Internet Appliances, Information Appliances) - Other Battery Powered Devices DESCRIPTION The Adapter Interface Circuit (AIC) is used to sense the presence of an external power source for a portable puter. It notifies the puter if a source is present and indicates if the source is appropriate for charging battery packs inside the puter. The AIC also senses an adapter current and its direction. AIC isolates the adapter and signals the puter 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. This significantly decreases additional heat dissipation during simultaneous fast battery charging while running a puter, particularly in Maximum Performance mode of operation Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. All trademarks are the property of their respective owners. PRODUCTION DATA...