BQ29400PW

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The BQ29400PW is a versatile, fully integrated battery management solution designed to monitor, measure, and protect Li-ion batteries used in a wide variety of consumer, industrial, and automotive applications. It provides power monitoring, charging, and protection for Li-ion battery packs and systems, handling large capacity and high power batteries with ease. The device is an all-in-one solution for small- to medium-sized Li-ion battery packs and its analog current and voltage input and output channels make it suitable for designing custom battery monitoring and protection systems.

BQ29400PW is a device of PMIC - Battery Management Technology. Its main application field is consumer, industrial, and automotive, with features designed to monitor, measure, and protect Li-ion batteries. It is an all-in-one solution for small- to medium-sized Li-ion battery packs. Its analog current and voltage input and output channels make it suitable for designing custom battery monitoring and protection systems.

The BQ29400PW device is built on a single integrated circuit that combines functions of power monitoring, charging, and protection into one. It features a wide input operating voltage range, which covers 3.5V to 10V. It operates with a switching frequency of 800 kHz, allowing for efficient power conversion. The device is programmable and offers scalable current and voltage ranges. It also supports battery temperature measurements, which help improve design reliability.

The BQ29400PW device includes numerous safety features, such as short-circuit protection, over-temperature protection, over-charge protection, under-voltage lock-out protection, and over-current protection. The device also has an integrated J36 connector, which eliminates the need for additional subcomponents. This makes the device suitable for use in space-constrained applications.

The working principle of the BQ29400PW device is based on driving and sensing of currents and voltages. The device monitors output and charging current and voltage, and controls the charging requirements of Li-ion cells. It performs battery management algorithms based on sensed voltage and current. The device uses an input power VBAT, which is the voltage across the battery and an output power VOUT, which is the output voltage from the battery, to control charging and power management. In addition, the device uses an integrated temperature sensor to monitor battery condition. The device also provides a voltage clamp feature to protect against reverse polarity and over-voltage conditions.

In conclusion, the BQ29400PW is an advanced and versatile solution designed to monitor, measure, and protect Li-ion batteries used in a wide variety of applications. It provides an all-in-one solution for small- to medium-sized Li-ion battery packs, with features such as power monitoring, charging, protection, temperature sensing, and various safety features. The device is ideal for designing custom battery monitoring and protection systems with its analog current and voltage input and output channels. With its wide operating voltage range and high switching frequency, the BQ29400PW is the perfect solution for any Li-ion battery system.

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