LTC1628IUH#PBF

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LTC1628IUH#PBF Application Field and Working Principle

Introduction

The LTC1628IUH#PBF is an integrated power management controller designed for applications requiring highly efficient, cost-effective DC-to-DC solutions. The device can be operated in step-down, step-up, and inverting modes, and also features a variety of features to simplify system design, reduce board space and minimize external components. It is ideal for powering a wide range of applications such as microprocessors, ASICs, FPGAs, and other small form factor systems.

PMIC - Voltage Regulators - DC DC Switching Controllers

The LTC1628IUH#PBF works as a DC-to-DC power management controller, helping to regulate and manage the power supply of a system’s components. It is capable of operating in a variety of conditions such as step-down, step-up and inverting DC-to-DC modes. It helps to improve efficiency, reduce components and reduce board space of an electronic system. The device features an integrated low on-time multiplier with restricted active discharges for improved efficiency.

Features

• Integrated low on-time multiplier, improving efficiency
• Maximized power conversion loop, with output voltage regulation and optimised current regulation
• Efficient operation, featuring multiple power management options
• High frequency operation and wide input voltage range
• External oscillator synchronization and shutdown control capabilities
• Integrated soft-start.

Applications

The LTC1628IUH#PBF can be used to monitor, regulate and manage power in a variety of applications, including microprocessor, ASIC and FPGA/DSP systems, storage, servers and other small form factor systems. It is also suitable for many single cell Li-Ion and Li-polymer battery systems.

Working Principle

The LTC1628IUH#PBF works by repeatedly switching an internal power MOSFET transistor on and off at a high frequency. When the power MOSFET is on, energy stored in an input capacitor is transferred to the output voltage. This energy is transferred to the output voltage as a packet, referred to as a switching cycle. The energy thus converted, is then regulated and managed by an integrated low on-time multiplier (LTOM), which reduces the pulse width of the switching cycle, depending on the amount of output voltage and current.

The LTOM also provides protection against excessive loading or short circuiting. When the output voltage reaches its specified limit, the LTOM automatically reduces the pulse width and in turn, helps to reduce power consumption, thus ensuring efficient operation. The device also includes an integrated soft start function, which helps to provide steady performance and also aids in protecting the system in case of a power surge.

Conclusion

The LTC1628IUH#PBF is an integrated power management controller designed for applications requiring highly efficient and cost-effective DC-to-DC solutions. It is capable of operating in a variety of conditions such as step-down, step-up, and inverting DC-to-DC modes, and features a variety of features to simplify system design, reduce board space and minimize external components. The device works by repeatedly switching an internal power MOSFET transistor on and off, and also features an integrated low on-time multiplier for improved efficiency. The LTC1628IUH#PBF is ideal for powering a wide range of applications, from microprocessors to storage, servers, and other small form factor systems.

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