BQ29704DSER

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The BQ29704DSER is a high-performance battery protection integrated circuit (IC) with built-in switch, ideal for devices powered by single battery cells. It is designed to provide advanced safety protection for a wide variety of battery-operated consumer devices. The device is especially well-suited for multi-chemistry, multi-cell battery packs for consumer and industrial applications requiring a high degree of complexity and small form-factor.

The BQ29704DSER offers a high level of protection for consumer battery-powered devices by combining charge protection, cell balancing, current-limit circuit, and over-voltage protection. It features programmable over-temperature protection, low-battery warning, battery overcharge/discharge protection, and cell mismatch compensation, as well as battery-type recognition and cell-aging management. In addition, it integrates a battery charger, cell monitoring, and voltage control circuitry.

The BQ29704DSER is well-suited for high-voltage and low-power applications, such as portable digital audio players, multimedia players, mobile phones, digital cameras, digital video cameras, notebook computers, and other battery-operated consumer devices. The IC is offered in a small form-factor package and is highly scalable, allowing designers to use it in a variety of applications.

The BQ29704DSER can be used to protect single, two, three and four-cell battery packs. The device supports all major battery chemistries such as Li-Ion, Li-Polymer, alkaline and nicad. It features adjustable charge current, over-voltage and over-current protection, and a cell-charging voltage accuracy of ± 0.4V. The solution also includes an on-board switching MOSFET, a chip-enable pin which can be used for a self- disabling feature, and a wide variety of other features which make it easy and cost effective to use in any battery-powered design.

The BQ29704DSER features a smart charge function which helps to reduce power consumption and increases battery cycle life. The device also provides adjustable voltage and current limited thresholds, temperature monitoring, and FET-gate drive voltage control. The device can be programmed to provide low power sleep and battery status LED safety indication.

The BQ29704DSER has a number of different operating modes. These include trickle charge, constant current charge, and constant voltage charge. The device also has two different safety thresholds to ensure that batteries are not damaged during charging. The device can also be used to provide a battery charging indication, which can be displayed as either a LED or via an on-board temperature sensor.

The device features a programmable Charging Control (CC) current limit and an adjustable Overvoltage Protection (OV) threshold that can be adjusted depending on the type of battery being used. The OV threshold will be set to a safe level and will only allow charging or discharging at or below the maximum voltage for the battery type. Additionally, the device can be programmed for different cell capacity protection, allowing users to configure their protection based on the type and capacity of battery in the application.

In addition, the BQ29704DSER provides a low-battery warning function, and can be configured to provide an on-board Charge status pin or Charge status LED that can be used to indicate the remaining battery capacity. The device also supports Cell Age-Matching (CAM) management, which can be used to improve battery longevity and cycle life by matching the battery age to the load and/or temperature.

Overall, the BQ29704DSER is a highly versatile and reliable battery management integrated circuit that can be used in a variety of applications. It offers advanced safety protection, ensure a long battery life and cycle life, and is especially well suited for multi-chemistry and multi-cell battery packs for consumer and industrial applications.

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