LT3474EFE

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LT3474EFE

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  • メーカー品番 #LT3474EFE

  • データシート LT3474EFE DataSheet

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仕様

属性
Brand Analog Devices
ProductType LED Lighting Drivers
Subcategory Driver ICs
NumberofOutputs 1 Output
NumberofChannels 1 Channel
Height 1.1 mm
ShippingRestrictions Mouser does not presently sell this product in your region.
Package/Case TSSOP-16
OutputCurrent 1 A
Series LT3474
Product LED Drivers
Topology Buck

概要

Description

The LT3474EFE is a high-performance, synchronous step-down (buck) DC/DC converter designed by Analog Devices (formerly Linear Technology). It features an input voltage range of 4.5V to 30V and can deliver up to 4A of output current. The device operates with a switching frequency of up to 1MHz, allowing for smaller external components and reduced PCB space.
Key features include: integrated power switches for high efficiency, an adjustable output voltage down to 0.8V, and a wide range of protection mechanisms such as overcurrent protection, thermal shutdown, and input voltage monitoring. The LT3474EFE also supports a variety of applications, including telecom, automotive, and industrial power management.
Its compact design, along with a combination of high efficiency and flexibility, makes it suitable for space-constrained designs. The device comes in a thermally-enhanced 16-lead TSSOP package, making it easy to integrate into various systems.

Equivalent

The LT3474EFE chip is a high-efficiency LED driver. Equivalent products include the TPS92512 from Texas Instruments, the MIC3215 from Microchip, and the LM3406 from Texas Instruments. Each of these alternatives offers similar functionalities, such as constant current regulation and high efficiency for driving LEDs. Always verify specifications and features to ensure compatibility with your application.

Features

The LT3474EFE is a high-performance LED driver from Analog Devices, designed for applications requiring efficient and precise LED lighting control. Key features include:
1. Wide Input Voltage Range: Operates from 4.5V to 60V, accommodating various power supply configurations.
2. Constant Current Output: Delivers precise LED current regulation, enhancing LED performance and lifespan.
3. Integrated Switching Regulator: Provides high efficiency with minimal external components.
4. Adjustable Output Current: Allows flexibility in setting the desired LED current via external resistors.
5. PWM Dimming: Supports PWM control for adjustable brightness, facilitating smooth dimming performance.
6. Thermal Protection: Includes built-in thermal shutdown to prevent damage from overheating.
7. Compact Package: Available in a 16-lead thermally enhanced TSSOP package, suitable for space-constrained designs.
8. High Efficiency: Achieves efficiencies up to 94%, reducing energy consumption and heat dissipation.
Overall, the LT3474EFE is ideal for a variety of LED lighting applications, offering reliability and performance in a compact form factor.

Pinout

The LT3474EFE is a high-efficiency, synchronous boost converter designed by Analog Devices. It features a total of 20 pins. The key functions of the pins are as follows:
1. Input Voltage (VIN): Power input for the device.
2. Switching Nodes (SW): Connection for the inductor and switching elements.
3. Feedback (VFB): Voltage feedback for regulating the output.
4. Compensation (COMP): Used for stability compensation in the feedback loop.
5. Enable (EN): Enables or disables the boost converter.
6. Ground (GND): Common ground connection.
7. Output Voltage (VOUT): Output voltage pin where the boosted voltage is available.
8. Soft-Start (SS): Controls the ramp-up of the output voltage to limit inrush current.
9. Power Good (PG): Indicates if the output voltage is within the specified range.
10. Thermal and Protection features: Pins for thermal sensing and various protection functions.
Overall, the LT3474EFE is designed for applications needing a compact, efficient power supply solution.

Manufacturer

The LT3474EFE is manufactured by Analog Devices, Inc. (ADI). Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company specializes in designing and manufacturing semiconductors and signal processing solutions for a wide range of applications, including communications, automotive, industrial, and consumer electronics.
Founded in 1965, Analog Devices is known for its innovation and expertise in analog technology, providing products that enable accurate and reliable data conversion and signal processing. The LT3474EFE is a step-up (boost) DC-DC converter, designed to provide efficient power management for various applications, such as powering LEDs, battery-operated devices, and other electronic systems. The company focuses on developing high-quality products that offer high performance, reliability, and precision, making it a key player in the semiconductor industry.

Application

The LT3474EFE is a high-efficiency, synchronous step-down DC/DC converter designed for applications requiring low output voltages and high current. Its primary application areas include powering microcontrollers, FPGAs, and DSPs in portable devices, as well as providing regulated power for automotive electronics, communication equipment, and industrial automation systems. Additionally, it can be used in battery-powered applications due to its low quiescent current and ability to maintain efficiency across a wide load range. The converter's features make it suitable for applications requiring precise voltage regulation and high transient response.

Package

The LT3474EFE is packaged in a 28-lead TSSOP (Thin Shrink Small Outline Package) form factor.

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