LTC3618IUF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Low quiescent current - Wide input voltage range - Adjustable output voltage - Small package size

Package: QFN (Quad Flat No-leads)

Essence: The LTC3618IUF is a power management IC designed for various applications that require efficient power conversion.

Packaging/Quantity: The LTC3618IUF is available in a QFN package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.25V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 3A
• Quiescent Current: 20µA
• Switching Frequency: 1MHz
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3618IUF has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. SW: Switching node pin
4. FB: Feedback pin
5. EN: Enable pin
6. PG: Power Good pin
7. VOUT: Output voltage pin

Functional Features

• High efficiency synchronous buck regulator
• Adjustable output voltage through external resistors
• Soft-start feature to reduce inrush current
• Overcurrent protection
• Thermal shutdown protection
• Power good indicator

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption - Wide input voltage range allows for versatile applications - Small package size saves board space - Adjustable output voltage provides flexibility

Disadvantages: - Limited maximum output current of 3A - Requires external resistors for output voltage adjustment

Working Principles

The LTC3618IUF is a synchronous buck regulator that converts an input voltage into a lower, adjustable output voltage. It utilizes high-efficiency power conversion techniques to minimize power losses and maximize efficiency. The device operates by controlling the duty cycle of the internal switches to regulate the output voltage.

Detailed Application Field Plans

The LTC3618IUF can be used in various applications, including but not limited to: - Portable electronic devices - Battery-powered systems - Industrial equipment - Automotive electronics - Distributed power systems

Detailed and Complete Alternative Models

1. LTC3618EUF: Similar specifications and features, different package (QFN)
2. LTC3618HUF: Higher maximum output current (5A), similar specifications and features, different package (QFN)
3. LTC3618XUF: Extended temperature range (-40°C to 150°C), similar specifications and features, different package (QFN)

These alternative models provide options with slight variations in specifications and package options while maintaining similar functionality.

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