LTC1155IN8#PBF

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The LTC1155IN8#PBF is a PMIC or power management integrated circuit (PMIC) gate driver device from Linear Technology. The chip is designed to provide power management, as well as gate drive and input protection for a wide range of applications. It incorporates a complementary high-side and low-side MOSFET design, which makes it suitable for driving loads requiring more than 5 amps, such as those found in motor drivers, DC-DC converters, and many other power supply designs.

The LTC1155IN8#PBF allows the user to monitor the load current and set the appropriate gate drive levels. It includes an adjustable threshold voltage that can be tuned to optimize gate drive levels and minimize switching losses. Its wide operating range spans from 3V to 45V, providing the flexibility to support a variety of gate driver applications. The device also offers capacitor discharge protection, over-voltage protection, over-current protection, under-voltage lockout, and thermal shutdown capabilities.

When the LTC1155IN8#PBF is used as a gate driver, its output consists of two shared current sources (a high-side driver and a low-side driver) that control the switching of its internal MOSFET power switches. The high-side driver drives the gate of the upper MOSFET, while the low-side driver drives the gate of the lower MOSFET. When the input signal is high, the high-side driver provides the gate drive for the upper MOSFET, so that it conducts current from the input source to the load. When the input signal is low, the low-side driver provides the gate drive for the lower MOSFET, so that it conducts current from the load back to the input source.

The LTC1155IN8#PBF has several applications including motor drivers, DC-DC converters, and many other power supply designs. Its wide operating range and a wide range of protection features make it an excellent choice for these and other applications. Additionally, its built-in current monitoring and adjustable threshold voltage features allow the device to be tuned to optimize gate drive levels and minimize switching losses.

In summary, the LTC1155IN8#PBF is a power management integrated circuit gate driver device designed to provide power management, gate drive, and input protection for a wide range of applications. Its wide operating range, protection features, and current monitoring capabilities make it an excellent choice for motor drivers, DC-DC converters, and many other power supply designs.

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