LTC3611IWP#TRPBF

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LTC3611IWP#TRPBF Application Field and Working Principle

The LTC3611IWP#TRPBF (hereafter referred to as LTC3611) is a dual shared output current mode PWM switching regulator of the LTC family. It is a constant on-time buck-boost converter designed to operate from an input voltage range of 2.7 V to 5.5 V and provides two independently regulated output voltages. It contains an internal power MOSFET driver with the maximum current capability of 1.5 A in each output channel. The switching frequency is adjustable from 600 kHz to 2.4 MHz. The device also provides support for synchronization to an external clock down to 50% duty cycle. It contains cycle-by-cycle current limit and a programmable soft-start circuit.

The LTC3611 is suitable for automotive applications such as driving LEDs, as well as industrial and consumer applications. It is capable of driving two output loads simultaneously. The device provides high efficiency over a wide range of input and output voltages, and offers a wide switching frequency range of 600 kHz to 2.4 MHz.

The Application Field

The LTC3611 is highly suitable for automotive applications such as driving LEDs, as well as industrial and consumer applications. The independent regulation of each channel makes it ideal for applications involving two separate supplies.

The wide input voltage range makes it suitable for a range of automotive power sources. Its high efficiency over a wide input and output voltage range makes it an ideal choice for automotive power systems. The device is also capable of driving two output loads simultaneously, and offers a wide switching frequency.

Working Principle

The LTC3611 is a current-mode switching regulator based on the constant on-time PWM control architecture. The basic working principle is to convert a large power supply voltage into a smaller operating voltage, or vice versa. The LTC3611 operates with a high frequency voltage-mode PWM signal. It contains an internal power MOSFET driver with maximum currents capability of 1.5 A in each channel.

The controller includes an adjustable switching frequency of 600 kHz to 2.4 MHz, and a programmable soft-start circuit. It also includes cycle-by-cycle current limit. To prevent the device from operating outside its safe operating area, the LTC3611 has an input under-voltage lockout (UVLO) and an output under-voltage (UVLO) function.

In applications requiring two regulated outputs, the LTC3611 can be used to power two independent loads. The device is also capable of synchronizing to an external clock, and offers a wide switching frequency range from 600 kHz to 2.4 MHz.

Conclusion

The LTC3611 is highly suitable for a wide range of applications, thanks to its wide input voltage range, high efficiency and programmable features. It can be used to power two independent outputs, and also to synchronize to external clock signals. With low cost and high performance, the LTC3611 makes it a preferred choice for automotive, industrial, and consumer applications.

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