LTC3851IGN#PBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High Efficiency - Wide Input Voltage Range - Programmable Output Voltage - Current Mode Control - Synchronous Buck Converter

Package: 16-Lead SSOP

Essence: The LTC3851IGN#PBF is a high-performance synchronous buck converter IC designed for power management applications.

Packaging/Quantity: Available in tape and reel packaging with a quantity of 2500 units per reel.

Specifications

The LTC3851IGN#PBF offers the following specifications:

• Input Voltage Range: 4.5V to 38V
• Output Voltage Range: 0.6V to 5.5V
• Maximum Output Current: 8A
• Switching Frequency: Up to 2MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LTC3851IGN#PBF features a 16-lead SSOP package with the following pin configuration:

1. VIN: Input Voltage
2. PGND: Power Ground
3. SW: Switch Node
4. BOOT: Bootstrap Capacitor Connection
5. VCC: Supply Voltage
6. FB: Feedback Voltage
7. COMP: Compensation Node
8. SS/TR: Soft-Start/Tracking
9. SYNC/MODE: External Clock Synchronization/Operating Mode Selection
10. GATE: Gate Drive Output
11. GND: Ground
12. GND: Ground
13. GND: Ground
14. GND: Ground
15. VOUT: Output Voltage
16. VOUT: Output Voltage

Functional Features

The LTC3851IGN#PBF offers the following functional features:

• Wide input voltage range allows for versatile applications.
• Programmable output voltage provides flexibility.
• Current mode control ensures stable and efficient operation.
• Synchronous buck converter architecture improves efficiency.
• High switching frequency enables compact designs.

Advantages and Disadvantages

Advantages: - High efficiency up to 95% reduces power loss. - Wide input voltage range accommodates various power sources. - Programmable output voltage suits different load requirements. - Current mode control enhances stability and transient response. - Synchronous buck converter architecture improves efficiency.

Disadvantages: - Limited maximum output current of 8A may not be suitable for high-power applications. - Requires external components for proper operation.

Working Principles

The LTC3851IGN#PBF operates as a synchronous buck converter, converting a higher input voltage to a lower output voltage efficiently. It utilizes current mode control to regulate the output voltage and maintain stability during load variations. The integrated circuit incorporates a high-frequency switching mechanism to minimize power losses and maximize efficiency.

Detailed Application Field Plans

The LTC3851IGN#PBF finds applications in various fields, including but not limited to:

1. Industrial Power Supplies
2. Telecom Infrastructure
3. Automotive Electronics
4. Distributed Power Systems
5. Battery-Powered Devices

Detailed and Complete Alternative Models

1. LTC3850IGN#PBF
2. LTC3862IGN#PBF
3. LTC3872IGN#PBF
4. LTC3890IGN#PBF
5. LTC3892IGN#PBF

These alternative models offer similar functionality and can be considered as alternatives to the LTC3851IGN#PBF depending on specific application requirements.

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