LTM2987CY#PBF

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The LTM2987CY#PBF is a high-performance switching mode power supply (SMPS) controller and monitor from Analog Devices. It is part of their Programmable and Merging-Type (PM) Integrated Circuits (ICs) series, designed for applications that require complex power conversion, current and voltage-management solutions.

The LTM2987CY#PBF features a wide input voltage range (4.5V to 60V), wide output current range (5mA to 1A), low output-voltage ripple and low power-consumption from the primary side. It also has built-in protection features such as over-voltage protection, current limiting and thermal shutdown.

The main application field of the LTM2987CY#PBF is in high-performance low voltage DC/DC converters and post-regulators which require complex, efficient and fast power conversion. It is particularly suitable for automotive applications, such as motor control, mobile systems, and lighting.

The working principle of the LTM2987CY#PBF is based on a continuously variable duty cycle and current mode control. It employs a high-frequency current-mode loop, which uses a fast PWM comparator, a high-side current sense amplifier, and a free-running oscillator to generate the switching signals.

The duty cycle of the LTM2987CY#PBF is controlled by an internal voltage reference, which can be adjusted through external resistors. The current mode loop provides fast transient response, improved line and load regulation, and wide output voltage range.

It also features a peak current limit circuit and an adjustable over-current shutdown threshold. The LTM2987CY#PBF also has an integrated power-OK signal which can be used to monitor the current and voltage on the output side of the converter.

The LTM2987CY#PBF is an ideal solution for applications requiring high performance, compact size, and low power implementation. It is highly flexible and configurable and is suitable for applications such as telecom, portable electronics and automotive applications.

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