LT3470EDDB

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LT3470EDDB

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  • Мфр. Часть #LT3470EDDB
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  • Лист данных LT3470EDDB DataSheet
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Спецификации

Package / Case DFN-8
Minimum Operating Temperature - 40 C
Maximum Operating Temperature + 85 C
Series LT3470
Brand Analog Devices
Product Type Switching Voltage Regulators
Subcategory PMIC - Power Management ICs
Mounting Style SMD/SMT
Shipping Restrictions Mouser does not presently sell this product in your region.
Operating Supply Current 25 uA
Topology Buck
Output Voltage 1.25 V to 16 V
Output Current 200 mA
Number of Outputs 1 Output
Input Voltage - Min 4 V
Input Voltage - Max 40 V
Switching Frequency 1.2 MHz

Обзор

Description

The LT3470EDDB is a high-efficiency, step-down switching regulator designed by Linear Technology, now part of Analog Devices. It is optimized for applications requiring a compact solution and offers a wide input voltage range, typically from 4V to 36V, which makes it suitable for various power supply applications. The device can deliver up to 200mA of output current with low quiescent current, making it energy-efficient.
Built with an internal power switch, the LT3470EDDB simplifies the design process as it requires minimal external components. It features frequency foldback and thermal shutdown for protection, as well as soft-start functionality to limit inrush current during startup. The device operates with a fixed switching frequency, which helps minimize EMI issues.
Packaged in a compact 3mm x 2mm DFN (Dual Flat No-Lead) package, the LT3470EDDB is ideal for space-constrained applications, such as portable electronic devices, automotive systems, and industrial equipment. Its robust performance and small footprint make it a popular choice for designers seeking reliable and efficient power regulation solutions.

Features

The LT3470EDDB is a step-down (buck) DC/DC converter designed for efficient power conversion in compact applications. Key features include:
1. Input Voltage Range: It operates with an input voltage range of 4V to 36V, accommodating a wide variety of input sources.
2. Output Current: The device can deliver up to 200mA of output current.
3. Efficiency: It offers high efficiency over a wide load range, thanks to its low quiescent current and burst mode operation.
4. Switching Frequency: The LT3470EDDB has a fixed switching frequency of 500kHz, which helps in minimizing external component size and filter design.
5. Integrated Power Switch: It includes an internal 400mA power switch to streamline design and minimize external component requirements.
6. Thermal Shutdown: The converter is equipped with thermal shutdown protection for reliability in diverse operating conditions.
7. Package: Delivered in a compact 8-lead (3mm × 2mm) DFN package, it is suited for space-constrained applications.
8. Output Voltage: It provides a fixed output voltage, making it easy to implement in standard applications.
These features make the LT3470EDDB suitable for battery-powered devices, industrial controls, and distributed power systems.

Package

The LT3470EDDB is a step-down DC/DC converter integrated circuit. The package type for the LT3470EDDB is a 3mm x 3mm DFN (Dual Flat No Leads) with 8 leads. This compact package is designed for efficient heat dissipation and is suitable for space-constrained applications.

Pinout

The LT3470EDDB is a step-down DC/DC converter manufactured by Analog Devices. It comes in a 6-lead (pin) DFN (Dual Flat No-leads) package. The function of the LT3470EDDB is to efficiently convert a higher input voltage to a lower output voltage with high efficiency, making it suitable for applications such as portable devices or battery-powered equipment.
The pin configuration for the LT3470EDDB is as follows:
1. SW (Switch) - Connects to the inductor and controls energy transfer.
2. GND (Ground) - Ground reference for the circuit.
3. VIN (Input Voltage) - Supplied voltage input for the converter.
4. SHDN (Shutdown) - Used to enable or disable the device.
5. FB (Feedback) - Senses the output voltage for regulation.
6. BYP (Bypass) - Bypasses the internal reference voltage for noise reduction.
The LT3470EDDB provides high-efficiency power conversion and is typically used in situations where space and power efficiency are critical.

Manufacturer

The LT3470EDDB is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in designing and manufacturing analog, mixed-signal, and digital signal processing (DSP) integrated circuits used in electronic equipment. The company provides solutions for a wide range of applications, including industrial, automotive, communications, healthcare, and consumer electronics.

Application

The LT3470EDDB is a step-down switching regulator designed for applications requiring efficient power conversion. It is commonly used in battery-powered devices, portable electronics, and telecom systems due to its high efficiency, compact size, and low quiescent current. Its wide input voltage range makes it suitable for automotive and industrial applications. Additionally, the device's ability to deliver a steady output voltage with minimal external components makes it ideal for LED drivers and distributed power systems.

Equivalent

The LT3470EDDB is a step-down DC/DC converter. Equivalent products include the LM2841 from Texas Instruments, the MIC23150 from Microchip Technology, and the AP1605 from Diodes Incorporated. When choosing an equivalent, ensure that specifications such as input voltage range, output current, switching frequency, and package type match your requirements. Always refer to the latest datasheets for precise compatibility.

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