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LTC1479 Datasheet(PDF) 1 Page - Linear Technology |
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LTC1479 Datasheet(HTML) 1 Page - Linear Technology |
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1 / 24 page  1 LTC1479 PowerPath Controller for Dual Battery Systems FEATURES DESCRIPTION s Complete Power Path Management for Two Batteries, DC Power Source, Charger and Backup s Compatible with Li-Ion, NiCd, NiMH and Lead-Acid Battery Chemistries s “3-Diode” Mode Ensures Powers is Available under “Cold Start” Conditions s All N-Channel Switching Reduces Power Losses s Capacitor and Battery Inrush Current Limited s “Seamless” Switching Between Power Sources s Independent Charging and Monitoring of Two Battery Packs s New, Small Footprint, 36-Lead SSOP Package The LTC ®1479 is the “heart” of a total power management solution for single and dual battery notebook computers and other portable equipment. The LTC1479 directs power from up to two battery packs and a DC power source to the input of the main system switching regulator. It works in concert with related LTC power management products (e.g. LTC1435, LT ®1511, etc.) to create a total system solution; starting from the batteries and the DC power source, and ending at the input of each of the computer’s complex loads. A system-provided power management µP monitors and actively directs the LTC1479. The LTC1479 uses low loss N-channel MOSFET switches to direct power from three main sources. An adaptive current limiting scheme reduces capacitor and battery inrush current by controlling the gates of the MOSFET switches during transitions. The LTC1479 interfaces di- rectly to the LT1510, LT1511 and LT1620/LTC1435 bat- tery charging circuits. TYPICAL APPLICATION Dual Battery PowerPath TM Controller System Block Diagram PowerPath is a trademark of Linear Technology Corporation. , LTC and LT are registered trademarks of Linear Technology Corporation. s Notebook Computer Power Management s Portable Instruments s Handheld Terminals s Portable Medical Equipment s Portable Industrial Control Equipment APPLICATIONS BAT1 BAT2 BATTERY CHARGER (LT1510/LT1511/ LT1620/LTC1435) SW A/B RSENSE SW C/D SW E/F SW G SW H + CIN DCIN 1479 TA01 5V AC ADAPTER POWER MANAGEMENT µP BACKUP REGULATOR (LT1304) HIGH EFFICIENCY DC/DC SWITCHING REGULATOR (LTC1435/LTC1438 ETC.) LTC1479 PowerPath CONTROLLER STATUS & CONTROL |
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Similar Description - LTC1479 |
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