This document introduces the LTC®4155 and LTC4156 dual multiplexed-input battery chargers, featuring PowerPath™ control, I2C programmability and USB On-The-Go for systems such as tablet PCs and other high power density applications. The LTC4155’s float voltage (VFLOAT) range is optimized for Li-Ion batteries, while the LTC4156 is optimized for lithium iron phosphate (LiFePO4) batteries, supporting system loads to 4A with up to 3.5A of battery charge current. I2C controls a broad range of functions and USB On-The-Go functionality is controlled directly from the USB connector ID pin.
The document introduces the LTC4155 and LTC4156, which are dual multiplexed-input battery chargers with PowerPath™ control. These chips support systems such as tablet PCs by managing charging from either a wall adapter or USB input while supporting system loads up to 4A.
The system supports up to 3.5A of battery charge current.
The undervoltage lockout (UVLO) is approximately 4.35V on each channel.