MAX1641EEE

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MAX1641EEE, a member of Maxim Integrated’s MAX1641 family, is a high efficiency linear charge pump DC-DC converter. It is specifically designed for use in battery charging applications.Read this article to learn about the application field and working principle of MAX1641EEE.

Applications

MAX1641EEE is a versatile DC-DC charge pump converter developed by Maxim Integrated. It can be used in a variety of applications, including notebook personal computers, PDAs, digital cameras, and cell phones. It is especially designed to charge small form factor lithium-ion and lithium-polymer batteries. It can also be used to provide 3.3V, 5V, 6V, and other output voltages with up to 75mA peak output current.

The MAX1641EEE features wide input voltage range (2.9V to 14V) and shutdown current of less than 0.1 μA, which makes it suitable for applications that require low power consumption. It also has two independent output voltage control pins, so it is suitable for applications that require dual output voltage control. The MAX1641EEE also features a regulated 5V output, a status flag output, and a low quiescent current of 8mA. These features make the MAX1641EEE a great choice for battery charging applications.

Working Principle

The MAX1641EEE is a charge pump DC-DC converter. It uses a switching mechanism to convert a low-input voltage to a higher output voltage. In the MAX1641EEE, the charge pump topology consists of two capacitors and two switches arranged in a buck-boost configuration.

When the MAX1641EEE is enabled, the two switches are simultaneously activated. One switch connects the input voltage source to one side of the first capacitor, while the other switch connects the other side of the first capacitor to the ground. This causes a voltage to be stored into the first capacitor.

Meanwhile, the second switch opens and connects the second capacitor to the output. Since the second capacitor is connected to the output, a voltage is stored in the second capacitor. This process is repeated in alternating cycles and the stored voltages in the two capacitors are added together. This additive effect results in a higher output voltage than the input voltage.

The output voltage of the MAX1641EEE is adjustable by adjusting the control pins. These control pins allow the output voltage to be set to any voltage within the specified range. The MAX1641EEE also features a regulated 5V output and a status flag output, which can be used to monitor the status of the battery charging process.

Conclusion

MAX1641EEE is a high efficiency linear charge pump DC-DC converter designed for use in battery charging applications. It features a wide input voltage range, low quiescent current, and two independent output voltage control pins. The MAX1641EEE operates on a charge pump principle, and the output voltage can be adjusted by adjusting the control pins. It is an ideal solution for charging small form factor lithium-ion and lithium-polymer batteries.

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