BQ24721C

The BQ24721C is a highly integrated, single-chip battery charger IC from Texas Instruments. It is designed to charge lithium-ion and lithium-polymer batteries in portable devices such as smartphones, tablets, and laptops.

The BQ24721C features a number of advanced features, including:

• Dynamic Power Management (DPM) to optimize battery charging current based on the available input power
• Input power limiting to avoid overloading the AC adapter when supplying the load and the battery charger simultaneously
• Highly-accurate current-sense amplifier to enable precise measurement of input current
• 6-V gate drives for better system efficiency
• Inrush-power limiting for instantaneous response to high input voltage multiplied by current
• AC Overpower protection (ACOP) to limit the input-switch power to the programmed level on the ACOP pin
• SBS-like SMBus interface for control and status communications with host

The BQ24721C is a popular choice for battery charger ICs in portable devices because of its high integration, advanced features, and small size.

Here are some of the benefits of using the BQ24721C:

• Reduced power consumption: The BQ24721C’s DPM feature helps to reduce power consumption by optimizing the battery charging current based on the available input power. This can extend the battery life of portable devices.
• Improved system efficiency: The BQ24721C’s 6-V gate drives help to improve system efficiency by reducing the power loss associated with switching external switches.
• Increased safety: The BQ24721C’s inrush-power limiting and ACOP features help to improve system safety by protecting the AC adapter and the device from damage due to high input voltage or current.
• Flexible configuration: The BQ24721C’s SBS-like SMBus interface allows for flexible configuration of the charger, including charging current, voltage, and termination mode.