LT3470ITS8

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LT3470ITS8

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Switching Voltage Regulators LT3470 - Micropower Buck Regulator with Integrated Boost and Catch Diodes

  • Nhà sản xuấtAnalog Devices

  • Ông. Phần #LT3470ITS8

  • Bảng dữ liệu LT3470ITS8 DataSheet

  • Có sẵn6666

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Description

The LT3470ITS8 is a high-efficiency step-up DC/DC converter from Analog Devices, designed for use in compact power supply applications. Housed in a TSOT-23 package, it features a wide input voltage range, typically from 2.4V to 16V, making it suitable for battery-powered devices and other low-voltage systems. The device can deliver output voltages up to 40V, supporting applications requiring higher voltage levels from lower voltage sources.
Key features of the LT3470ITS8 include a built-in power switch and Schottky diode, which simplifies the design and reduces the component count. It offers a high switching frequency of up to 1.2MHz, enabling the use of smaller external components and contributing to a compact design footprint. The LT3470ITS8 also incorporates features like soft-start, current limiting, and thermal shutdown, ensuring reliable operation and enhanced protection against faults.
Overall, the LT3470ITS8 is well-suited for applications in portable electronics, LED drivers, and general-purpose boost converters, offering efficiency, flexibility, and ease of integration.

Equivalent

The LT3470ITS8 is a step-down switching regulator from Analog Devices. Equivalent products might include step-down regulators with similar specifications from manufacturers like Texas Instruments, such as the TPS62122, or from Microchip, such as the MCP16311. It's essential to compare parameters like input voltage range, output current, and switching frequency to ensure they match your requirements. Always verify compatibility based on your specific application requirements.

Features

The LT3470ITS8 is a high-efficiency step-down (buck) switching regulator designed by Analog Devices. Key features include:
1. Input Voltage Range: Operates from 4V to 36V, making it suitable for automotive and industrial applications.
2. Output Current: Delivers up to 200mA of continuous output current.
3. Efficiency: High efficiency over a wide load range, optimized for low power consumption.
4. Switching Frequency: Fixed 2.2MHz, allowing for the use of small, low-cost inductors and capacitors.
5. Integrated Switch: Features a built-in power switch, reducing the need for external components.
6. Low Quiescent Current: Consumes only 2.5µA during shutdown, enhancing battery life in portable applications.
7. Thermal Shutdown: Includes protection features like thermal shutdown and current limit to prevent damage under fault conditions.
8. Package: Available in a thermally enhanced 8-lead TSOT-23 package.
These features make the LT3470ITS8 an excellent choice for compact and efficient power supply designs in various electronic applications.

Pinout

The LT3470ITS8 is a step-down switching regulator from Analog Devices, designed to deliver high efficiency in a compact package. It is available in an 8-pin TSOT-23 package. The pin functions are as follows:
1. SW (Pin 1): Switch node, connected to the inductor and catch diode.
2. GND (Pin 2): Ground reference for the device.
3. FB (Pin 3): Feedback pin for setting the output voltage via an external resistor divider.
4. SHDN (Pin 4): Shutdown pin, used to enable or disable the regulator.
5. VIN (Pin 5): Input supply voltage pin.
6. NC (Pin 6): No connect, not internally connected.
7. VC (Pin 7): Compensation pin for loop stability.
8. RT (Pin 8): Timing resistor pin to set the switching frequency.
This compact design allows the LT3470ITS8 to be used effectively in space-constrained applications, providing regulated output voltage from a higher input voltage source.

Manufacturer

The LT3470ITS8 is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company provides solutions used in a wide range of electronic equipment, including industrial, automotive, communications, consumer electronics, and healthcare applications. Analog Devices is known for its high-performance products that address various signal processing needs.

Application

The LT3470ITS8 is a step-up DC/DC converter commonly used in applications requiring efficient voltage boosting. Key areas include powering OLED displays, portable devices, and handheld electronics where space and power efficiency are crucial. It's suitable for battery-powered equipment due to its low quiescent current and high efficiency. The device can also be found in LED drivers, where it provides constant current output, as well as in industrial and automotive systems needing compact power solutions. Its small size and thermal performance make it ideal for space-constrained applications.

Package

The LT3470ITS8 is housed in a TSOT-23 package, which is a thin, small-outline package with 8 leads. This type of package is designed for compact applications and is commonly used for surface-mounted devices.

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