BQ24075RGTT Integrated Circuits (ICs)

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Battery chargers, also known as battery charging integrated circuits (ICs), are commonly used in a wide variety of applications for a variety of battery types and chemistries. BQ24075RGTT is a highly efficient battery charger IC designed for space-constrained applications. It features has lower AC impedance when compared to other ICs, making it one of the most popular battery management ICs in the market. This article will provide an overview of the BQ24075RGTT application field and working principle.

The BQ24075RGTT device is a primary-side, 7-A, step-down battery charger IC. Because it requires no auxiliary components, the BQ24075RGTT simplifies the design, lowers the cost, and reduces the size of the circuit board. The device operates with an input voltage range of 4.5 V to 20 V and can charge 1, 2, 3, or 4 cells Li-ion or Li-polymer battery stack. It supports 1C or 2C charge current, from 2.15 A to 7 A, with a programmable charge timer and a minimum input current limit.

The device also provides several protection features, such as thermal regulation, battery overvoltage protection, cell balance control, and cell overcurrent protection. This makes BQ24075RGTT an optimal choice for heavy duty applications such as industrial and automotive.

 The device provides an accurate voltage regulation for charge current and also offers a programmable charge timer, which can be set according to the customer’s requirement. In addition, it enables system monitoring of charge status, cell voltage, and temperature, and cell balance control to balance cell voltages.

The working principle of BQ24075RGTT can be described using two charging modes: single cell charging and two-cell charging. For single cell charging, the device converts the voltage of the supply line to the required output voltage. The device then reduces the current by using a series of elements, such as a switch, a coil, and a diode, which allows it to regulate the voltage and current until the voltage and current reach a certain level.

In two-cell charging mode, the device converts the voltage of the supply line to the required output voltage. The device then reduces the current by using a series of elements, such as a switch, a coil, and a diode. After the required output voltage is reached, the device allows current to flow to charge the two cells. The two cells are connected in series and their voltages are balanced using a cell balance control circuit.

In conclusion, the BQ24075RGTT device is a highly efficient and cost-effective battery charger IC, designed for space-constrained applications. It features a wide input voltage range, accurate voltage regulation, several protective features, and a programmable charge timer. The device is suitable for heavy-duty applications due to its high efficiency, low cost, and small form factor.

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