LT1308AIS8#TRPBF

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Voltage regulators are an important part of any power system, and are used to ensure that the system operates in a stable and reliable manner. The LT1308AIS8#TRPBF, by Analog Integrated Circuits, is a synchronous buck regulator that provides high efficiency and reliable power regulation. It belongs to the family of DC/DC switching regulators and is the ideal solution for stepping down higher voltage supplies to run digital IC’s and other low voltage applications.

Features

The LT1308AIS8#TRPBF is a highly advanced regulator in its class and comes with many features such as:

• Wide input voltage range of 8V to 28V
• High efficiency due to synchronous rectification up to 95%
• High output current capability up to 12A
• Integrated over current protection and thermal shutdown
• Ultra low standby current of 82µA
• Pb Free Plus anneal available (RoHS compliant)

Application Fields

The LT1308AIS8#TRPBF is suited for a wide range of applications such as industrial systems, television, networking and automotive. With its fast transient response and high switching frequency of 2.2MHz, it is ideal for powering digital ICs, FPGAs and ASICs.

Working Principle

The LT1308AIS8#TRPBF is a synchronous buck voltage regulator that employs a two phase interleaved operation. The core components of the LT1308AIS8#TRPBF are the input and output capacitors, the inductor, the high side and low side switching MOSFETs, the error amplifier and the control logic.

The two phases are timed such that they are 180 degrees out of phase, resulting in considerably lower input current ripple. The input voltage is converted to a duty cycle consumed by the MOSFETs, which then regulate the output voltage. The error amplifier keeps the output voltage to a minimum by controlling the duty cycle and making sure it is low when the output voltage drops. The compensator block suppresses loop instabilities and regulates the system.

The LT1308AIS8#TRPBF is capable of providing output current up to 12A with a wide input voltage range of 8V to 28V. The output voltage range is adjustable from 0.5V to 5.25V with a maximum switching frequency of 2.2MHz.

Conclusion

The LT1308AIS8#TRPBF DC/DC switching regulator is an advanced, highly efficient and reliable solution for voltage regulation applications. It features two interleaved phases, high current handling capability and wide input voltage range, making it ideal for regulating digital ICs, FPGAs and ASICs. With its fast transient response and adjustable output voltage range, the LT1308AIS8#TRPBF is a perfect choice for industrial systems, automotive and networking applications.

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