Datasheet Analog Devices LTC4110EUHF#PBF

LTC4110
Battery Backup
System Manager
FEATURES DESCRIPTION n The LTC®4110 is a complete single chip, high efficiency,
flyback battery charge and discharge manager with automatic switchover between the input supply and the backup
battery or super capacitor. The IC provides four modes of
operation: battery backup, battery charge, battery calibration and shutdown. Battery backup and battery charge are
automatic standalone modes, while the optional calibration
mode requires a CPU host to communicate over an SMBus.
During calibration the flyback charger is used in reverse
to discharge the battery with a programmable constant
current into the system load eliminating heat generation.
Three status outputs can be individually reconfigured over
the SMBus to become GPIOs. User programmable overdischarge protection is provided. The SHDN pin isolates
the battery to support shipping the product with a charged
battery installed. n Complete Backup Battery Manager for Li-Ion/
Polymer, Lead Acid, NiMH/NiCd Batteries and
Super Capacitors
Charge and Discharge Battery with Voltages Above
and Below the Input Supply Voltage
“No Heat” Battery Calibration Discharge Using
System Load
Automatic Battery Backup with Input Supply …