LTC3425EUH

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LTC3425EUH

Switching Voltage Regulators LTC3425 - 5A, 8MHz, 4-Phase Synchronous Step-Up DC/DC Converter

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개요

Description

The LTC3425EUH is a high-efficiency, synchronous step-down DC-DC converter designed by Analog Devices. It features a wide input voltage range from 2.5V to 15V and can deliver up to 1A output current, making it suitable for various portable and battery-powered applications. The device incorporates a unique architecture that enables low quiescent current, which is essential for preserving battery life in low-power applications.
Key features include a programmable output voltage adjustable down to 0.8V, a high switching frequency of up to 1.5MHz for compact external components, and built-in protections such as over-temperature and short-circuit protection. The LTC3425EUH also supports a low noise operation mode, enhancing performance in sensitive applications. Its small package size (available in a 3mm x 4mm DFN) makes it ideal for space-constrained designs. Overall, the LTC3425EUH is a versatile solution for efficient power management in modern electronics.

Features

The LTC3425EUH is a high-efficiency step-down DC/DC converter designed for portable applications. Key features include:
1. Input Voltage Range: Operates from 2.5V to 5.5V, suitable for single-cell lithium-ion batteries.
2. Output Current: Supports up to 1A output current with low dropout.
3. High Efficiency: Up to 95% efficiency, minimizing heat generation and extending battery life.
4. Adjustable Output Voltage: Allows for output voltage settings as low as 0.8V, providing flexibility for various applications.
5. Low Quiescent Current: Only 20µA in shutdown mode, enhancing battery life in portable devices.
6. Built-in Compensation: Simplifies design and reduces external component count.
7. Thermal Protection: Integrated thermal shutdown for device protection.
8. Tiny Package: Available in a 3mm x 3mm DFN package, ideal for space-constrained applications.
These features make the LTC3425EUH suitable for powering microcontrollers, sensors, and other low-voltage circuits in consumer electronics and battery-operated devices.

Package

The LTC3425EUH is packaged in a 10-lead MSOP (Mini Small Outline Package) with a heatsink, designed for efficient thermal management and compact applications.

Pinout

The LTC3425EUH is a dual-output buck converter from Analog Devices, featuring a 20-pin HTSOP package. It is designed for efficient power conversion in portable applications.
Pin Count: 20 pins
Key Functions:
1. VIN: Input voltage supply.
2. GND: Ground connection.
3. SW: Switching node for inductor connection.
4. VOUT1 & VOUT2: Outputs for the two regulated voltage outputs.
5. FB1 & FB2: Feedback pins for output voltage regulation.
6. COMP1 & COMP2: Compensation pins for stability.
7. EN1 & EN2: Enable pins for controlling the outputs.
8. ISEN1 & ISEN2: Current sense pins for overcurrent protection.
9. PGOOD1 & PGOOD2: Power good status indicators for each output.
The LTC3425EUH provides high efficiency, low ripple, and compact solutions for powering devices in battery-operated applications.

Manufacturer

The LTC3425EUH is manufactured by Analog Devices, Inc. (ADI), a global semiconductor company headquartered in Norwood, Massachusetts. ADI specializes in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves various industries, including communications, automotive, consumer electronics, industrial automation, and healthcare. Founded in 1965, Analog Devices is known for its innovative solutions in signal processing and data conversion, providing essential components for a wide range of applications, from precision measurement to complex system designs.

Application

The LTC3425EUH is a high-efficiency, synchronous step-down DC-DC converter primarily used in portable devices and battery-operated applications. Its application areas include powering microcontrollers, sensors, and communication devices, as well as in battery management systems. It is suitable for consumer electronics, industrial equipment, and IoT devices, where compact size and low power consumption are critical.

Equivalent

Equivalent products to the LTC3425EUH chip include the TPS63060 from Texas Instruments, the MAX8523 from Maxim Integrated, and the MICROCHIP MCP1640. These alternatives provide similar features in step-up (boost) converter applications, but it's essential to check specific parameters such as input/output voltage, current ratings, and efficiency to ensure compatibility with your design requirements.

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