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PMIC - Power Distribution Switches, Load Drivers

AAT4616AIPU-T1 is a monolithic type CMOS switching IC. This IC has application fields in load-based systems and operates at a power supply of 2.7V to 5.5V. It’s ideal for Li-ion battery powered portable devices due to its less operating current and no external components needed. The device has low RDSON and includes an enable input for allowing multiple devices to provide a single switch.

Features

• High Efficiency Mode: RDSON is typical <20mΩ.
• Extremely low-current switch (1μA typical) with enabled output.
• Thermally enhanced 10-pin micro-leadframe (MLF) package.
• Power Supply Voltage range: 2.7-5.5V.
• Over-temperature protection.
• Control inputs are logic compatible.

Application fields

• Load-switching circuits.
• Power supply devices.
• Power glitch reduction in power-up/power-down sequences.
• Over-Temperature Protection.
• Power conditioning.

Working principle

The working principle used by AAT4616AIPU-T1 is a dual PMOS power switch driven by a logic-level enable input. When this input is high or ≥1.8V, the switches are turned on and the load is connected to the output. Otherwise, the switches turn off, disconnecting the load from the output. This type of switch is ideal for use in high power-load applications because it requires very little current to operate and can easily switch the large currents demanded by such loads. It also provides "on-off" control, allowing for more efficient power management.

The AAT4616AIPU-T1 is controlled by an enable input which allows multiple devices to act as a single switch. This allows for better efficiency and more control over the load current. The device also includes protection circuits to protect against thermal runaway, over-current and over-voltage, ensuring reliable operation and a long service life.

Conclusion

AAT4616AIPU-T1 is an ideal device for applications in which a high power load needs to be switched with minimal power consumption. Its small size, low RDSON and low current requirements as well as is over-temperature protection make it ideal for use in Li-ion battery powered portable devices. Its enable input allows multiple devices to be connected together, providing more efficient and accurate switching.

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