BQ 736

he BQ736 is a 1- to 4-cell Li+ battery SMBus charge controller from Texas Instruments. It features a number of advanced features, including:

• Automatic N-Channel MOSFET selection of system power source from adapter or battery driven by I2C interface
• SMBus-controlled NMOS-NMOS synchronous buck converter with programmable 615-, 750-, and 885-kHz switching frequencies
• Power management features such as input current limiting, output voltage regulation, and thermal protection
• Battery safety features such as overcharge protection, overdischarge protection, and short-circuit protection

The BQ736 is a popular choice for battery charge controllers in laptops and other portable devices because of its high integration, advanced features, and small size.

Here are some of the benefits of using the BQ736:

• Improved system performance: The BQ736’s support for Intel® CPU Turbo Boost Mode allows laptops to deliver higher performance when needed.
• Increased power efficiency: The BQ736’s synchronous buck converter helps to improve power efficiency by reducing the power loss associated with switching external switches.
• Enhanced system reliability: The BQ736’s power management and battery safety features help to improve system reliability by protecting the laptop and its battery from damage due to overcharging, overdischarging, or overheating.
• Reduced cost: The BQ736’s high integration helps to reduce the cost of laptops by reducing the number of components needed on the motherboard.

Overall, the BQ736 is a highly integrated, feature-rich battery charge controller that is well-suited for use in laptops and other portable devices.

Here is an example of how the BQ736 can be used in a laptop:

• The BQ736 can be used to control the charging and discharging of the laptop’s battery.
• The BQ736 can also be used to monitor the battery’s voltage, current, and temperature.
• The BQ736 can communicate with the laptop’s system management controller (SMC) to provide information about the battery and to receive charging instructions.

The BQ736 is a critical component in many laptops and other portable devices. It helps to ensure that the device’s battery is charged safely and efficiently, and that it can deliver the power needed to run the device.