Cypress provides a recommended PCB layout guide for the SL811HS in their application note AN2141. It's essential to follow this guide to ensure proper thermal management, noise reduction, and signal integrity.
The SL811HS is designed to work with various battery chemistries, including Li-Ion, Li-Poly, and NiMH. To configure the device for a specific battery chemistry, refer to the datasheet's 'Battery Chemistry Selection' section, which provides guidelines for setting the BATCHEM pin and adjusting the charge voltage and current limits.
The PROTECT pin is an open-drain output that indicates when the SL811HS detects an over-charge, over-discharge, or over-temperature condition. You can connect this pin to a microcontroller or other logic circuit to take action when a fault occurs, such as shutting down the system or alerting the user.
Yes, the SL811HS can be used with battery packs that have multiple cells in series. However, you'll need to ensure that the total voltage of the battery pack does not exceed the device's maximum input voltage rating (28V). Additionally, you may need to use external components, such as voltage dividers, to scale the battery voltage to within the device's acceptable range.
The SL811HS provides a Coulomb counter that tracks the charge and discharge cycles of the battery. You can use this information to implement a fuel gauge function by periodically reading the Coulomb counter value and calculating the remaining battery capacity. Cypress provides example code and guidelines for implementing a fuel gauge function in their application note AN2142.
SL811HS datasheet
by Cypress Semiconductor
