LTC3852IUDD#TRPBF

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PMIC - Voltage Regulators - DC DC Switching Controllers

The LTC3852IUDD#TRPBF is an advanced non- synchronization integrated circuit, designed for DC/DC stepdown applications, used for switching between three different output voltages with no external control required. It is a highly-integrated, single-output, synchronous switch-mode controller, ideal for various DC/DC applications in various systems. This section of the paper will look at how the LTC3852IUDD#TRPBF is applicable in various fields, as well as how it works.

Application Field:

The LTC3852IUDD#TRPBF from Linear Technology is an ideal solution for DC/DC stepdown applications that require high output accuracy at no load. It can also be used in automotive, consumer, industrial, and telecommunications applications, as well as high current pentographs and 3D printing applications, thanks to its integrated load-share and load-balancing control circuits. It also offers more control over the output voltage, wide range of input voltages, and current share between parallel load which make it suitable for VCT application. To maximize efficiency, it includes innovative peak current mode control techniques and allows parallel operation of synchronous switching FETs without additional hardware or software. Additionally, this switch-mode controller is also suitable for various multi-rail applications such as POS, workstation, ADSL, storage, as well as networking and cloud computing servers.

The LTC3852IUDD#TRPBF is designed to provide low noise for all conditions, maintaining a steady output even in Minimum Input Voltage mode. Also, since it can operate in a PWM mode and/or a Burst Mode depending on load, it drastically reduces power loss while still maintaining precise output voltage control.

In terms of safety, the LTC3852IUDD#TRPBF can detect input voltage faults, DC OV and OC faults, various overcurrent limits, and even over-temperature faults, and through the onboard WDT (watchdog timer) can immediately shut down output in case of a fault condition, not requiring any extra hardware for monitoring certain functions.

Working Principle:

At the heart of the LTC3852IUDD#TRPBF lies its Digital Integrated Control or DIC (DIC) circuit. This is a highly integrated programmable system that maintains control over the synchronous buck switching regulators when they are working in parallel. With the aid of the DIC, the LTC3852IUDD#TRPBF can have a cycling of the output voltage in a range of 0 to 100%, thus allowing versatile voltage adjustment.

The use of synchronous buck regulators with the aid of the Digital Integration Control makes the LTC3852IUDD#TRPBF an efficient and precise device. This is done through mechanisms such as PWM/Burst Mode operation, Peak current limit,DC OV and OC fault comparators, and an internal voltage reference that ensures an accurate output voltage, even at no load. This guarantees that the output of the device stays at its desired value, no matter the load on the output voltage.

The Advanced Peak Current Limit circuitry of the LTC3852IUDD#TRPBF helps eliminate the need for additional external devices such as current sense resistors and multiplier chips, further adding to its advantages. Additionally, the step-down converters are also programmed to operate at different frequencies to reduce noise and reduce active ripple-filtering components. The device is also capable of operating in a forced continuous PWM with a minimum on-time of 200ns.

The LTC3852IUDD#TRPBF offers a high level of performance and a wide range of capabilities. This makes it ideal for a broad range of applications, from PDAs, MP3 players to telecom systems, gaming consoles, ultra-low voltage railway systems, and more. It is also flexible enough to be used in multiple computing and networking systems, including cloud computing and storage servers. All this, combined with its primary features make the LTC3852IUDD#TRPBF an ideal choice for DC/DC stepdown applications, providing level of accuracy and control that are unmatched in today’s market.

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