LTM4650EY-1A#PBF

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

One of the most important components used in modern electronics and engineering is a DC DC converter. The LTM4650EY-1A#PBF is a DC DC converter from Linear Technology corporation. It is designed for use in applications where space is limited and the output voltage must be carefully regulated and precisely controlled.

Application Field

The LTM4650EY-1A#PBF is designed primarily for communications, computing, storage, and instrumentation applications. It is a step-down (buck) DC DC converter with a 4.5 A (5 A peak) maximum output current, and can output up to 48V. It has a wide input voltage range of 8V to 18V, making it suitable for a range of applications, including those with direct connection to a 12V battery. Additionally, the device is capable of operating in a wide temperature range, from -40°C to 125°C.

The LTM4650EY-1A#PBF is designed to provide excellent noise performance, with low output noise levels of 4µV RMS. It offers high efficiency (up to 95%) with good thermal performance and reliable operation in high ambient temperatures. The device has in-rush current limiting, short-circuit protection, thermal limiting, and over-voltage shutdown features for safe operation in harsh environments.

Working Principle

The LTM4650EY-1A#PBF is a switched-mode DC DC converter that generates the desired output voltage by rapidly switching a high voltage current through an inductor, transforming it into a lower voltage current. This process is known as inductive buck conversion. By charging and discharging an inductor with a high-frequency signal, the output voltage can be precisely controlled and regulated.

To achieve this switching process, the LTM4650EY-1A#PBF requires a pair of power switches connected in series between the input voltage and ground. It also needs a storage element, usually a capacitor, between the power switches, and additional control circuitry to switches the power switches on and off.

When the switch is on, the current is allowed to flow through the inductor, increasing the magnetic field and storing energy. When the switch is off, this stored energy is discharged from the inductor, causing the current to flow through the output capacitor, producing the desired output voltage. By using PWM (Pulse Width Modulation) to control the on/off period of the switch, the voltage level of the output capacitor can be accurately controlled.

By combining the inductive buck conversion method with PWM control, the LTM4650EY-1A#PBF is able to efficiently and accurately deliver the desired output voltage. This makes it an ideal choice for applications where space is limited and precise output voltage control is required.

The specific data is subject to PDF, and the above content is for reference