LTC3609IWKG

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High Efficiency - Wide Input Voltage Range - Low Quiescent Current - Adjustable Output Voltage - Synchronous Rectification - Overcurrent Protection - Thermal Shutdown

Package: 24-Lead 4mm x 5mm QFN

Essence: The LTC3609IWKG is a high-efficiency, synchronous buck regulator IC designed for power management applications.

Packaging/Quantity: The LTC3609IWKG is available in a 24-Lead 4mm x 5mm QFN package.

Specifications

• Input Voltage Range: 2.25V to 5.5V
• Output Voltage Range: 0.6V to VIN
• Maximum Output Current: 600mA
• Switching Frequency: 1MHz
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3609IWKG has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. SW: Switch Node
4. FB: Feedback Voltage
5. EN: Enable Pin
6. SS: Soft-Start Pin
7. PG: Power Good Indicator
8. VOUT: Output Voltage

Functional Features

• High Efficiency: The LTC3609IWKG offers high efficiency due to its synchronous rectification and low quiescent current.
• Wide Input Voltage Range: It can operate with an input voltage range of 2.25V to 5.5V, making it suitable for various applications.
• Adjustable Output Voltage: The output voltage can be adjusted from 0.6V to the input voltage.
• Overcurrent Protection: The IC includes overcurrent protection to prevent damage to the circuit.
• Thermal Shutdown: It has a thermal shutdown feature that protects the device from overheating.

Advantages and Disadvantages

Advantages: - High efficiency - Wide input voltage range - Adjustable output voltage - Overcurrent protection - Thermal shutdown

Disadvantages: - Limited maximum output current (600mA)

Working Principles

The LTC3609IWKG is a synchronous buck regulator that uses a pulse-width modulation (PWM) control scheme. It converts the input voltage to a lower, regulated output voltage by switching the power MOSFETs on and off at a high frequency. The synchronous rectification improves efficiency by reducing power losses.

Detailed Application Field Plans

The LTC3609IWKG can be used in various applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial equipment - Automotive systems - IoT devices

Detailed and Complete Alternative Models

Some alternative models to the LTC3609IWKG include: - LTC3609EUF: 24-Lead 4mm x 5mm QFN package, similar specifications - LTC3609IMSE: 10-Lead MSOP package, similar specifications - LTC3609EMSE: 10-Lead MSOP package, similar specifications

These alternative models offer similar functionality and can be considered as replacements for the LTC3609IWKG.

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