MP2604DQ-LF-P

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Power Management IC chips with integrated battery charger control are often referred to as PMIC-Battery Chargers. One of these power management ICs, MP2604DQ-LF-P, is designed to intelligently control Li-ion / Li-Polymer battery charging process in mobile phone, notebook computer and other portable electronic devices. It offers excellent dynamic performance, small form factor and low standby power consumption. It is widely used in mobile phone, notebook computer, tablet and other portable electronic devices.

Application Field

MP2604DQ-LF-P is suitable for Li-ion / Li-Polymer battery based system applications, including mobile phones, notebooks, tablet computers, digital cameras and other portable electronic devices. It utilizes an advanced 16-bit DSP core to control system current and voltage, and provide accurate and safe battery charging. Its wide input voltage range (4.2V~5.5V) makes it suitable for use in the advanced charging method for portable electronic devices. Additionally, it provides low standby power consumption (Typical value 0.01µA), and it is capable of operating from an ultra-low voltage operating range (VIN = 1.8V).

Working Principle

MP2604DQ-LF-P utilizes a 16-bit DSP core to control battery charging current and voltage. It operates on a slave control mode and communicates with the host over an I2C interface. The I2C interface is used to configure the various parameters such as input voltage, maximum charging current, termination voltage, etc. Additionally, the status of the charging process can also be monitored through the I2C interface. The MP2604DQ-LF-P includes several blocks for battery charging: A charge pump, a linear regulator, and a battery protection circuit. The charge pump is responsible for generating higher output voltage from a lower input voltage. This is used to power the other blocks of the charging system. The linear regulator is used to provide regulated supply voltage to the system. The battery protection circuit monitors the battery voltage and current, and provides protection from overcharge, overdischarge, over temperature and short circuit.

MP2604DQ-LF-P provides step down charging method for Li-ion / Li-Polymer battery pack. The charging process is based on the Charge-FET (field effect transistor) feedback control. In this method, the charging current is regulated by the feedback signal from the Charge-FET, which controls the flow of current across the battery. The current through the Charge-FET is sensed by an internal current sensing amplifier, which drives the error amplifier. The output voltage of the error amplifier is fed back to the loop compensator, which adjusts the charging current accordingly.

The charge current is regulated by the Charge-FET during step down charging, and the voltage and temperature of the battery is monitored by the dedicated Temperature and Over-Voltage Protection circuits. If the temperature or voltage of the battery exceeds the threshold, the charging process is terminated immediately. Additionally, the battery protection circuit will activate a fault indicator if the charging current exceeds the maximum current limit. This indicates an over-current condition, which could potentially cause permanent damage to the battery.

Conclusion

MP2604DQ-LF-P is an advanced power management IC with integrated battery charger control. It is specifically designed for Li-ion / Li-Polymer battery based applications. It offers excellent dynamic performance, small form factor, low standby power consumption and wide input voltage range (4.2V~5.5V). Additionally, it provides step down charging method for Li-ion / Li-Polymer battery, and monitors the battery voltage and current to provide protection from overcharge, overdischarge, over temperature and short circuit. MP2604DQ-LF-P is widely used in portable electronic devices such as mobile phones, notebooks and tablet computers.

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