LT3009EDC#TRMPBF

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LT3009EDC#TRMPBF Application Field and Working Principle

The LT3009EDC#TRMPBF or LT3009/EDC#TRMPBF is a monolithic DC/DC converter from Linear Technology\'s simple switcher series. It operates from 2.7V to 17V input, providing low power consumption, high efficiency and low cost power requirements. This device provides a 200mA output at up to 1.2V from a 3.3V input with a 2.5MHz switching frequency. The LT3009EDC#TRMPBF is housed in a TSSOP-20 surface mount package and is widely used in a range of applications including ZigBee, Automotive, USB, Machine Vision, IoT Gateways, Cell Phones, and Industrial IoT.

The LT3009EDC#TRMPBF is a high-efficiency synchronous step-down DC/DC converter, allowing it to operate from either a 3.3V (2.7V to 5V) or a 5V (4V to 6.5V) power supply with up to 1A of output current. The efficient operation is accomplished by using a high switching frequency of 2.5MHz, which allows for very small external components to be used. It is capable of supplying up to 200mA at a fixed output voltage of 1.2V. The LT3009EDC#TRMPBF supports both continuous conduction mode (CCM) and discontinuous conduction mode (DCM) operation to minimize the power loss of the power conversion depending on the load conditions.

The LT3009EDC#TRMPBF utilizes a simple buck architecture in combination with a fast current-mode control principle. Current mode control is more reliable and has faster loop response, allowing the LT3009EDC#TRMPBF to smoothly adjust to varying load conditions, while load transient response is maintained without an output capacitor. The switching frequency is managed by a synchronization input from an external clock source. This synchronizing clock enables the LT3009EDC#TRMPBF to provide an output voltage faster than an unregulated output voltage, with fast transient response.

For applications requiring a low noise output, the LT3009EDC#TRMPBF offers programmable soft-start to reduce inrush current at power-up and enable smooth start-up. It also provides both over-current protection where the output current is monitored by an internal current limit circuit and overtemperature protection for safe and reliable operation. The LT3009EDC#TRMPBF has a wide input voltage range that allows it to be used in virtually any application. In addition, it has an enable input pin that can be used to switch the device on or off.

The LT3009EDC#TRMPBF is an ideal choice for a wide range of applications where high efficiency and small size are key design requirements. This device\'s ability to reduce power dissipation through its synchronous architecture, allows designers to optimize their design for power efficiency and performance. Its high switching frequency and current mode control also provide fast output voltage regulation and excellent transient response, making it well suited for compact and power sensitive applications such as portable devices and consumer electronics.

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