BQ25050DQCR Integrated Circuits (ICs)

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Introduction to BQ25050DQCR

The BQ25050DQCR is a high-frequency synchronous buck charger for Li-ion and Li-polymer batteries, developed by Texas Instruments. The device is designed to provide a portable power input system solution to cost-sensitive applications where high efficiency and small form factor are desired. It integrates MOSFETs into small SFN package, and is available in 1mm x 1.5mm size. The BQ25050DQCR offers high accuracy current and voltage regulation that make it suitable for industrial, health and wellness, measuring, wearables, and portable applications. It also has an integrated voltage, temperature and current protection features to ensure safety.

BQ25050DQCR Application Field

The BQ25050DQCR is mainly used in portable power input systems for Li-ion and Li-polymer batteries. It provides high efficiency over the entire load range and is well suited for applications like wearables and measuring instruments. It can handle a wide range of battery sizes and is especially useful for smaller, space-constrained applications. The charger can help extend battery life and deliver fast charge times when used correctly. It is also suitable for applications where high accuracy current and voltage regulation are desired.

BQ25050DQCR Working Principle

The BQ25050DQCR is a DC-DC synchronous buck step-down battery charger, designed to efficiently charge Li-ion and Li-polymer batteries. It operates at a fixed PWM frequency of 24kHz, has a switching current limit of 1.8A, and is capable of charging a 3-cell battery. The device has an integrated voltage, temperature, and current protection features. The voltage protection feature monitors the output to ensure the battery is not overcharged, while the temperature protection feature monitors the battery’s internal temperature to ensure it is not overheated. The current protection feature limits the maximum current output of the charger, which prevents the battery from being damaged due to overcurrent. The charger also has an integrated output power stage that reduces the need for external MOSFETs, allowing for smaller, more cost effective solutions.

Conclusion

The BQ25050DQCR from Texas Instruments is an efficient, advanced DC-DC synchronous buck step-down battery charger, suitable for Li-ion and Li-polymer batteries. Its features help ensure safety and accuracy when charging, while its small form factor is perfect for space-constrained applications. The device is capable of providing high efficiency over the entire load range and its integrated output power stage eliminates the need for external MOSFETs, making it an ideal choice for batteries in portable systems.

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