AAT4252AITP-3-T1

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The AAT4252AITP-3-T1 is an integrated integrated switcher/load driver for power distribution, load control and management. It is an ideal choice for applications requiring high current distribution and control. Applications using this high current switch include point-of-load systems, automotive power management, battery charger systems, industrial power management, medical instrumentation and laboratory automation.

This three terminal integrated power control IC provides power distribution and control, load control and management. It integrates an advanced dual low on resistance switch, adjustable current limiting and thermal overload protection. Its low on resistance configuration allows for low energy dissipation, resulting in high efficiency. The integrated load drivers and switches can operate in both single and dual supply operation for consistent power delivery under high current load. The switch can be programmed to provide extremely precise output with low ripple and noise. The integrated LED indicators provide visual indication for active and power-good source supply.

In an application field, the AAT4252AITP-3-T1 can be used for automotive headlight and other automotive power control, battery charging systems and medical instrumentation. It can also be used in industrial power control, power-sensitive systems and laboratory automation. This integrated power device combines the convenience and efficiency of a digital power supply into a single integrated circuit, thus providing high-efficiency power control and management.

The working principle of the AAT4252AITP-3-T1 power distribution switch/load driver, requires a multiple selector switch (MS) and a single voltage reference (VREF). The MS switch, depending on the signal input, enables or disables the output of the switch. VREF is used to control the voltage of the output, depending on the input voltage. The single voltage reference, when compared with the input voltage, decides with precision of the output voltage. The switch is triggered with a low switch on time (tON) and high off time (tOFF) that provides maximum switching accuracy.

In order to prevent the associated risk of overcurrent and short-circuit, the integrated switch features a built-in thermal shut down circuit that sends a signal to the controller IC in case of overcurrent or over-temperature. The circuit can be programmed to allow normal operations after the occurrence of the defined threshold. The integrated switch also provides an input delay that reduces the switch on time in the presence of high di/dt. This prevents the over-load of the switch and associated risk during switching.

The AAT4252AITP-3-T1 provides wide operating temperature range, high input voltage range and adjustable current limiting that make it an ideal choice for a wide range of applications. With integrated switches and load drivers, it can provide excellent power distribution, control and management with high accuracy and reliability. Its small size and low on-resistance configuration also make it suitable for point-of-load systems and automotive power management needs.

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