LTC3225/LTC3225-1
150mA Supercapacitor
Charger
FEATURES DESCRIPTION n The LTCВ®3225/LTC3225-1 are programmable supercapacitor chargers designed to charge two supercapacitors in
series to a selectable п¬Ѓxed output voltage (4.8V/5.3V for
the LTC3225 and 4V/4.5V for the LTC3225-1) from input
supplies as low as 2.8V to 5.5V. Automatic cell balancing
prevents overvoltage damage to either supercapacitor. No
balancing resistors are required. n Low Noise Constant Frequency Charging of Two
Series Supercapacitors
Automatic Cell Balancing Prevents Capacitor
Overvoltage During Charging
Programmable Charge Current (Up to 150mA)
Selectable 2.4V or 2.65V Regulation per Cell
(LTC3225)
Selectable 2V or 2.25V Regulation per Cell
(LTC3225-1)
Automatic Recharge
IVIN = 20ОјA in Standby Mode
ICOUT < 1ОјA When Input Supply is Removed
No Inductors
Tiny Application Circuit (2mm Г— 3mm DFN Package,
All Components CBOT) Charging Proп¬Ѓle with 30% …