LTC3119IUFD

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LTC3119IUFD

IC REG BUCK BOOST ADJ 5A 28QFN

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Спецификации

Part Status Obsolete
Function Step-Up/Step-Down
Output Configuration Positive
Topology Buck-Boost
Output Type Adjustable
Number of Outputs 1
Voltage - Input (Min) 2.5V
Voltage - Input (Max) 18V
Voltage - Output (Min/Fixed) 0.8V
Voltage - Output (Max) 18V
Current - Output 5A
Frequency - Switching 400kHz ~ 2MHz
Synchronous Rectifier Yes
Operating Temperature -40°C ~ 125°C (TA)
Mounting Type Surface Mount
Package / Case 28-WFQFN Exposed Pad
Supplier Device Package 28-QFN (4x5)
Base Product Number LTC3119

Обзор

Description

The LTC3119IUFD is a highly integrated buck-boost DC/DC converter designed by Analog Devices (formerly Linear Technology). It efficiently converts a wide input voltage range (from 2.7V to 15V) to a desired output voltage, making it suitable for battery-powered applications and energy harvesting.
Key features include a maximum output current of up to 3A, high efficiency (up to 95%), and a compact package that allows for space-saving designs. The device incorporates built-in power switches, reducing the need for external components and simplifying the circuit layout. Additionally, it supports both step-up and step-down capabilities, ensuring versatility in various power supply scenarios.
The LTC3119 is equipped with features like adjustable output voltage, soft-start, and over-temperature protection, enhancing reliability and performance in demanding applications. Its applications span from portable devices to industrial equipment, making it a popular choice for power management in modern electronic designs.

Features

The LTC3119IUFD is a high-efficiency, step-up DC/DC converter from Analog Devices, designed for powering loads from low-voltage sources like single-cell lithium-ion batteries. Key features include:
1. Wide Input Voltage Range: Supports input voltages from 2.5V to 15V.
2. Output Voltage Range: Adjustable output voltage up to 15V.
3. High Efficiency: Achieves up to 95% efficiency, minimizing heat generation.
4. Internal Switches: Contains internal power MOSFETs to simplify design.
5. Low Quiescent Current: Ideal for battery-powered applications, ensuring long battery life.
6. Current Mode Control: Provides fast transient response and stable operation.
7. Soft-Start Functionality: Reduces inrush current during startup.
8. Thermal Protection: Prevents overheating through thermal shutdown.
9. Compact Package: Available in a 20-lead 4mm × 5mm QFN package, suitable for space-constrained designs.
These features make the LTC3119IUFD suitable for various applications, including portable devices, energy harvesting, and remote sensors.

Package

The LTC3119IUFD is packaged in a 16-lead, 3mm × 3mm plastic QFN (Quad Flat No-lead) package.

Pinout

The LTC3119IUFD is a high efficiency buck-boost converter IC with a total of 20 pins. Its primary functions include converting input voltages that can be below, above, or equal to the output voltage, making it versatile for battery-powered applications.
Key features include:
- Buck-Boost Operation: Allows for operation with input voltages below, above, or equal to the output voltage.
- High Efficiency: Up to 95% efficiency under various conditions.
- Adjustable Output Voltage: With external resistors, the output voltage can be set from 1.5V to 15V.
- Integrated Switches: Internal switching transistors reduce the need for external components.
- Battery Management: Suitable for charging and boosting applications with battery sources.
The LTC3119 is useful in applications such as automotive, industrial, and portable devices, where robust power management is essential.

Manufacturer

The LTC3119IUFD is manufactured by Analog Devices, Inc. (ADI), a prominent semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies. Founded in 1965, ADI designs and manufactures a wide range of integrated circuits and systems that cater to various industries, including automotive, communications, industrial, and healthcare. The LTC3119 is a part of their product offerings focused on power management solutions, specifically designed for energy harvesting and battery management applications.

Application

The LTC3119IUFD is a high-efficiency, step-up DC-DC converter suitable for applications such as energy harvesting, battery-powered devices, portable electronics, and solar-powered systems. It is ideal for powering low-voltage microcontrollers, sensors, and RF transmitters from low input voltages, including those from thermoelectric generators or solar cells. Its compact design and versatile input range make it suitable for wearable technology and automotive applications as well.

Equivalent

The LTC3119IUFD is a boost converter IC from Analog Devices. Equivalent products include the Texas Instruments TPS61088, Maxim Integrated MAX757, and the Microchip MCP1643. These alternatives offer similar functionality in step-up voltage conversion, but specific features like output current, efficiency, and packaging may vary, so it's essential to check datasheets for precise requirements.

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