The LTC4054XES5-4.2#TRMPBF is a single-cell linear Li-Ion battery charger from Analog Devices. It delivers a programmable constant-current charge up to 800 mA, with a fixed 4.2 V float voltage.
The 800 mA maximum charge current sets the charge-time floor for a single 4.2 V Li-Ion cell. The constant-current programming is set with a single external resistor.
