LT3741IUF#PBF

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The LT3741IUF#PBF is a monolithic, low noise step-down switching regulator controller from Linear Technology equipped with features like Power Good flag, adjustable on-time and under-voltage lockout. It is capable of delivering a regulated output current of up to 150mA with peak current capability up to 1A ensuring high-efficiency operation and longer battery life. It is available in an 8-pin MSOP package and has a wide range of operating input supply pressure ranging from 4.5V to 28V.

As a DC DC Switching Controller, LT3741IUF#PBF offers many different applications such as:

• Battery Power Management
• Low Voltage Driver
• Always-On Power Supply
• Precise Voltage Control

The working principle of LT3741IUF#PBF involves a low-loss synchronous step–down conversion, which works by varying the duty cycle of a switching transistor in the feedback loop of an error amplifier. The regulation of this loop ensures the output voltage is set to the desired level. The controller features an on-time control pin, with an internal precision voltage reference, which defines the switching period of the regulator. Since the output voltage is proportional to the on-time, the output voltage can be accurately regulated over a wide range. Furthermore, the controller ensures that the switched-mode power supply is as efficient and as quiet as possible by automatically controlling the switching frequency.

At the same time, a low-noise Power Good Flag output is also provided. This feature informs the system that the output voltage is regulated and stable. Additionally, LT3741IUF#PBF is designed with an automatic under-voltage lockout that disables the output stage when the input voltage drops below a preset level. This prevents the system from operating at an inefficient point on the load line and ensures the longest battery life.

Overall, the LT3741IUF#PBF a great choice for precision voltage control. Thanks to its low noise, high efficiency and Power Good Flag, the LT3741IUF#PBF is suitable for a wide range of applications including battery power management, low voltage drivers, always-on power supply, and precise voltage control.

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