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Datasheet Linear Technology LTC3110EUF#PBF

Manufacturer:Linear Technology
Series:LTC3110
Part Number:LTC3110EUF#PBF

2 A Bidirectional Buck-Boost DC/DC Regulator and Charger/Balancer

Datasheets

Manufacturer's Classification

Power Management > Supercapacitor Chargers

Other Names: LTC3110EUFPBF, LTC3110EUF PBF

Docket:
LTC3110
2A Bidirectional Buck-Boost
DC/DC Regulator and
Charger/Balancer
DESCRIPTION FEATURES
VCAP Operating Range: 0.1V to 5.5V
VSYS Operating Range: 1.71V to 5.25V
Automatic Switchover from Charge to Backup Mode
Programmable ±2% Accurate Charge Input Current
Limit from 125mA to 2A
n ±1% Backup Voltage Accuracy
n Automatic Backup Capacitor Balancing
n Fixed 1.2MHz Switching Frequency
n Burst Mode® Operation: 40μA Quiescent Current
n Built-In Programmable Multipurpose Comparator
with Open-Collector Output
n Open-Collector Outputs to Indicate Direction of
Operation and End of Charge
n Thermally Enhanced TSSOP-24 and 4mm × 4mm
QFN-24 Packages n n n The LTC®3110 is a 2A bidirectional buck-boost DC/DC
regulator with capacitor charger and balancer. Its wide
0.1V to 5.5V capacitor/battery voltage and 1.8V to 5.25V
system backup voltage ranges make it well suited to a
wide variety of backup applications using supercapacitors
or batteries. A proprietary low noise switching algorithm
optimizes efficiency with capacitor/battery voltages that
are above, below or equal to the system output voltage. n The LTC3110 can autonomously transition from charge
to backup mode or switch modes based on an external
command. Pin-selectable Burst Mode operation reduces
standby current and improves light-load efficiency, which
combined with a 1μA shutdown current make the LTC3110
ideally suited for backup applications. Additional features
include voltage supervisors for direction control and end of
charge, and a general purpose comparator with open-collector output for interfacing with a µC. The LTC3110 is available in thermally enhanced, low profile 24-lead TSSOP and
4mm × 4mm QFN packages. APPLICATIONS n n Supercapacitor Backup Converter...

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