The LTC4156IUFD#PBF is an integrated circuit (IC) component designed by Linear Technology, which is now part of Analog Devices Inc. It is a high-precision, standalone I2C interface-based lithium-ion battery charger with power-path management functionality.
The LTC4156IUFD#PBF is specifically designed for portable devices such as smartphones, tablets, and other battery-powered applications. It operates with a wide input voltage range of 4.5V to 35V, making it suitable for a variety of power sources such as USB ports, automotive power supplies, and wall adapters.
One of the key features of this IC is its high charging efficiency, achieved using a synchronous buck converter as the main charger. It allows the IC to deliver up to 4A of charge current to the battery, thus reducing charging times. Additionally, a programmable battery charger current limit is available to optimize charging performance based on the battery capacity.
The LTC4156IUFD#PBF incorporates a power-path management feature, which allows the device to seamlessly switch between input power sources (such as a power adapter) and the connected battery. This functionality enables simultaneous charging of the battery while powering the load, without any interruption or voltage drop.
Another notable feature of the LTC4156IUFD#PBF is its I2C interface, which offers a convenient means of communication with the IC
