Analog Devices Inc. LTC4041 2.5A Supercapacitor Backup Power Manager's adjustable input current limit function reduces charge current to protect the input supply from overload while an external disconnect switch isolates the input supply during backup. When the input supply drops below the adjustable PFI threshold, the 2.5A boost regulator delivers power from the supercapacitor to the system output.
An optional input overvoltage protection (OVP) circuit protects the LTC4041 from high voltage damage at the VIN pin. An internal supercapacitor balancing circuit maintains equal voltages across each supercapacitor and limits the maximum voltage of each supercapacitor to a pre-determined value. The Analog Devices Inc. LTC4041 2.5A Supercapacitor Backup Power Manager is available in a low profile (0.75mm) 24-Lead 4mm × 5mm QFN package.