MAX8877EUK42+T

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PMIC - Voltage Regulators - Linear

The MAX8877EUK42+T is a high-performance and cost-effective 4-channel LDO (low-dropout linear voltage regulator) that can provide up to 25 mA of output current per channel. This device also integrates two low-noise linear regulators with low quiescent current and fast transient response. It is designed to be used in a variety of applications, including mobile phones, portable multimedia players, laptop computers and other electronics.

Application Field

The MAX8877EUK42+T can be used in a variety of electronic applications, such as:

• Portable consumer electronics
• Cell phones
• MP3 players
• Digital cameras and camcorders
• Notebooks
• High-end embedded devices
• Link-laptop computers

The MAX8877EUK42+T is also applicable as a power solution for 7/10/13/15V battery-powered devices. It can provide different regulated outputs (1.20V – 4.35V) for circuits requiring multiple low-voltage supplies.

Working Principle

The MAX8877EUK42+T is a 4-channel low-dropout linear voltage regulator that converts a higher input voltage to a lower regulated output voltage. It consists of an internal voltage reference, an error amplifier, a series pass transistor, and a pair of compensation components.

First, the internal voltage reference sets the output voltage. The error amplifier is then used to compare the reference voltage to that of the set output voltage. If there is a difference, then the error amplifier will adjust the current flow through the series pass transistor until the output voltage is set. The compensation components provide stability performance to the output voltage regardless of external conditions, such as the input voltage, output voltage, and temperature.

The MAX8877EUK42+T is designed with low quiescent current and fast transient response. The low quiescent current allows for efficient operation, which helps to reduce overall system power consumption. The fast transient response helps to ensure that the output voltage remains stable even during fast load changes.

In addition, the MAX8877EUK42+T has extended output voltage range and high load current capability. Its 4-channel architecture allows for separate regulation of each output, providing the flexibility necessary for powering a variety of system components.

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