MAX77816AEWP+

Series:	*
Packaging:	Tube
Part Status:	Active
Package / Case:	20-WFBGA
Supplier Device Package:	20-WLP (1.83x2.13)

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Introduction to MAX77816AEWP+

The MAX77816AEWP+ is a very efficient DC-DC converter that was designed by Maxim Integrated. The MAX77816AEWP+ features an up to 1MHz switching frequency and up to 95% efficiency. It is a 27V input voltage, 20V output voltage, and 33A (max) battery charger suitable for connected IoT and POS devices. The MAX77816AEWP+ supports both buck and boost configurations and has a wide operating temperature range of 0°C to 85°C.

Application Field and Working Principle

The MAX77816AEWP+ is a switching voltage regulator designed for use in portable devices such as wearables, IoT, and small industrial applications where space and power efficiency are important. It operates in a buck or boost configuration depending on the desired output voltage and supports two pulse width modulation (PWM) frequencies of 500kHz and 1MHz. The MAX77816AEWP+ DC-DC converter consists of a power transistor which switches on/off rapidly, allowing for very efficient energy conversion between input and output. When the transistor is turned on, the energy stored in an inductor is transferred to the output through the diode and filter capacitor. This process continues until the output voltage reaches the desired level, at which point the transistor turns off and the cycle begins again. The MAX77816AEWP+ can also be used for battery charging. In this case, the converter will operate in a constant-current mode , which will eventually cause the output voltage to rise to the maximum rating of the regulation loop. When this occurs, the battery is deemed to be fully charged and the charger will automatically switch off, preventing overcharging.

Advantages

The MAX77816AEWP+ provides industry-leading efficiency and is capable of up to 95% efficiency when running in buck configuration, while maintaining a very small solution size. Furthermore, its input voltage range of 18V to 27V enables it to be used in a wide variety of applications. Its wide operating temperature range of 0°C to 85°C provides reliable operation in harsh environments.

Disadvantages

The main disadvantage of the MAX77816AEWP+ is its limited current rating. With a maximum current of 33A, it may not be suitable for applications with higher current demands. Furthermore, the 1MHz switching frequency may be prone to interference from other components, so it should be used in well-shielded environments.

Conclusion

The MAX77816AEWP+ is a very efficient DC-DC converter designed for use in portable devices such as wearables, IoT, and small industrial applications where space and power efficiency are important. It provides industry-leading efficiency and a wide input voltage range, while its limited current rating and 1MHz switching frequency can be a disadvantage in some cases.

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