MAX1898EUB41+

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Power integrity is a vital component of any electronic device. When an electronic device requires an extended lifespan and reliable performance, it must be configured with reliable power modules and configurations. The MAX1898EUB41+ is an intelligent, integrated, low-power battery charger designed to provide reliable power supply to electronic devices and systems. In this article, we will discuss the application field and working principle of the MAX1898EUB41+.

Application Field

The MAX1898EUB41+ is designed for use in applications, such as laptop computers and tablets, that require robust protection and reliable performance. The charger features an input voltage range of 5.5V to 25V and a maximum output current of 1.2A. It also offers advanced current regulation, over-voltage protection, and temperature protection to ensure the safe operation of the connected device. Additionally, the charger comes with an integrated, monolithic switching architecture and soft start circuit, allowing for flat frequency response and consistent output power.

The MAX1898EUB41+ is also designed with advanced current regulation, allowing the device to be configured to operate within narrow voltage ranges while providing a highly consistent output voltage. This advanced regulation helps to ensure that connected electronic devices and systems are supplied with reliable power and consistent operation. Furthermore, the charger is designed with low output ripple and low component count, enabling it to provide higher efficiency and better thermal performance.

Working Principle

The MAX1898EUB41+ is a switching-mode charger which employs a monolithic converter circuit to provide charging power. It incorporates a primary MOSFET, secondary MOSFET, and a PWM control circuit. The device provides a constant output voltage when operating at the input voltage range. The converter circuit is designed with advanced current regulation, which helps to limit the output current and maintain a constant output voltage. The output voltage is regulated by an adjustable feedback loop, with a current setting resistor (CSR) and a voltage setting resistor (VSR) incorporated into the control circuit.

The device also provides short-circuit protection and over-voltage protection. The short-circuit protection is provided by a delay circuit, which monitors the device’s output voltage and trips the circuit if it senses an increase in current. The over-voltage protection keeps the battery from overcharging by preventing the output voltage from exceeding its rated level. The device also incorporates temperature protection, which is triggered when the device’s internal temperature exceeds 85°C.

The charger employs a soft-start circuit, which eases the startup process of the device and helps to reduce inrush current. When the device is turned on, the soft-start circuit slowly increases the output voltage. The device is also capable of setting low frequency oscillation, which helps to reduce switching noise and minimize electromagnetic interference.

Conclusion

The MAX1898EUB41+ is a low-power battery charger designed to provide reliable power to electronic devices and systems. It incorporates an integrated, monolithic switching architecture and advanced current regulation for a consistent output voltage. The charger also offers short-circuit protection, over-voltage protection, and temperature protection to ensure the safe operation of the connected device. Furthermore, the charger employs a soft-start circuit, which eases the startup process of the device and helps to reduce inrush current. Therefore, the MAX1898EUB41+ is an ideal choice for providing reliable power to electronic devices.

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