LTC3618EUF

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LTC3618EUF

IC REG CONV DDR 2OUT 24QFN

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  • Mfr. Parte #LTC3618EUF
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  • En stock9534

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Especificaciones

Part Status Obsolete
Applications Converter, DDR
Voltage - Input 2.25V ~ 5.5V
Number of Outputs 2
Voltage - Output Adj down to 0.5V
Operating Temperature -40°C ~ 125°C
Mounting Type Surface Mount
Package / Case 24-WFQFN Exposed Pad
Supplier Device Package 24-QFN (4x4)
Base Product Number LTC3618

Descripción general

Description

The LTC3618EUF is a high-efficiency monolithic synchronous step-down regulator from Analog Devices, formerly Linear Technology. It is designed to provide up to 3A of continuous output current from a 2.25V to 5.5V input supply, making it well-suited for portable electronic devices and systems powered by single-cell lithium-ion batteries. The device operates with a fixed switching frequency of 2.25MHz, allowing for the use of small inductors and capacitors, which minimizes the overall solution size.
Key features of the LTC3618EUF include Power-On Reset, power good output voltage monitoring, and internal soft-start to limit inrush current during startup. The device also supports Burst Mode operation to maintain high efficiency at light loads, dropping the quiescent current to as low as 50μA. Additionally, it offers a low dropout mode for high efficiency and a low reference voltage of 0.6V, which allows for low output voltages. The LTC3618EUF is available in a compact 24-lead 4mm × 4mm QFN package, making it an excellent choice for space-constrained applications.

Features

The LTC3618EUF is a dual-output, high-efficiency monolithic synchronous buck regulator. It features a compact, high-performance design suitable for portable and low-power applications. Key features include:
1. Input Voltage Range: Operates from 2.25V to 5.5V, making it ideal for single-cell lithium-ion or multi-cell alkaline/NiMH applications.
2. Output Voltage: Each output is adjustable and can deliver up to 3A, with voltages as low as 0.6V.
3. Efficiency: High efficiency up to 95%, thanks to its synchronous rectification and low RDS(ON) internal switches.
4. Switching Frequency: Programmable up to 4MHz, allowing the use of small inductors and capacitors.
5. Low Quiescent Current: Features Burst Mode® operation for high efficiency at light loads.
6. Thermal Management: Includes thermal protection and current limit to safeguard against overheating and excessive current.
7. Package: Available in a 28-pin (4mm × 4mm) QFN package.
These features make the LTC3618EUF an excellent choice for applications requiring compact designs and high efficiency, such as portable electronics and battery-operated devices.

Package

The LTC3618EUF is available in a 28-lead (4mm × 5mm) QFN package.

Pinout

The LTC3618EUF is a dual-output, high-efficiency synchronous step-down regulator from Analog Devices. It is available in a 24-lead (4mm × 4mm) QFN package. The device integrates two 4A output channels and operates from an input voltage range of 2.25V to 5.5V, making it suitable for a variety of applications including point-of-load regulation in distributed power systems.
Key functions and features of the LTC3618EUF include:
- Dual channel outputs capable of delivering up to 4A each.
- Programmable switching frequency from 400kHz to 4MHz.
- Synchronizable to an external clock for multi-phase operation.
- Internal loop compensation with a fast transient response.
- Power good indicators for both outputs.
- Current mode operation for excellent line and load transient response.
- Internal soft-start and output tracking.
This IC is designed for high efficiency and is typically used in systems requiring efficient power conversion with tight thermal constraints.

Manufacturer

The LTC3618EUF is manufactured by Analog Devices, Inc. Analog Devices is a multinational company specializing in the design and manufacturing of integrated circuits used in a wide range of electronic equipment. They focus on solutions for signal processing, power management, sensors, and other applications. Analog Devices serves various industries, including communications, automotive, industrial, aerospace, and healthcare.

Application

The LTC3618EUF is a high-efficiency, monolithic synchronous step-down regulator. Its application areas include powering microprocessors, DSPs, FPGAs, and ASICs in portable electronics, telecommunications equipment, and industrial systems. It is well-suited for applications requiring a compact, efficient power solution with a wide input voltage range and low output voltage ripple.

Equivalent

The LTC3618EUF is a dual synchronous step-down regulator from Analog Devices. Equivalent products may include the Texas Instruments TPS544B20, Maxim Integrated MAX15501, and the ON Semiconductor NCP6924. These alternatives offer similar functionalities with varying specifications such as input voltage range, output current, and efficiency. Always verify the electrical characteristics and package compatibility when selecting an equivalent to ensure it meets the application requirements.

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DHL: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 2-5 días hábiles.

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UPS: El costo de envío oscila entre $25-$45 (0.5kg), con un tiempo de entrega estimado de 3-7 días hábiles.

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EMS: El costo de envío oscila entre $30-$50 (0.5kg), con un plazo de entrega estimado de 7-15 días hábiles.

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