BQ24004PWPR

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BQ24004PWPR is a charge controller device specially designed for Li-Ion powered portable equipment. It is a low cost solution for battery charging applications, particularly for cell phones, PDAs, digital cameras, digital media players and other portable equipment, packing the core functionality of the device in the small 6-pin TDFN package.

The BQ24004PWPR is a Low-side Power MOSFET drive buck-boost charger. It is well suited for Li-Ion and LiPo single cell charging applications. This device provides three important power functions:

• Constant current/constant voltage (CC/CV) Li-Ion/LiPo battery charging
• High Efficiency Buck/Boost Switched Mode Power Supply (SMPS)
• Low-side power MOSFET gate driver

The BQ24004PWPR includes a voltage regulator, current charger and low-side power MOSFET drive. This device has an input voltage range from 3.5 V to 20 V, allowing for wide input voltage range support. It can drive the MOSFET gate with a voltage high enough to ensure an adequate MOSFET ON resistance and gate threshold drift.

The BQ24004PWPR is designed to maintain a constant current and constant voltage to the battery during charging. It also supports a slew rate that can be set to various values to control the rate at which the battery is charged. It also provides overcurrent and thermal shutdown protection to ensure device reliability and battery safety.

The BQ24004PWPR is ideal for a range of portable devices, including cell phones, PDAs, digital cameras, digital media players and other portable equipment. It can be used in combination with low-cost, low-capacity batteries to provide cheap, reliable battery charging performance.

Overall, the BQ24004PWPR is a highly integrated and low cost power solution allowing for a range of portable device battery charging applications. It provides the key functions of a charge controller, power MOSFET drive, voltage regulator and protection circuits in an easy to use package, providing a reliable and efficient charging solution for Li-Ion/LiPo battery powered portable devices.

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