The LTC4013 is unique to Linear’s portfolio. The closest multi-chemistry charging ICs are the LTC4015 buck charger controller, and the LTC4020 buck-boost charger controller. The LTC4020 is a multi-chemistry buck-boost battery charger controller with similar voltage range, similar extensive lead acid charge algorithms, more feature-rich PowerPath control but less sophisticated MPPC or maximum power point control for solar. The LTC4015 is a more full-featured multi-chemistry buck battery charger controller with digital telemetry, coulomb counter, I²C interface, SMBus, more complete PowerPath control and a more sophisticated MPPT active tracking algorithm for solar.