LT3922EUFD#TRPBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High efficiency, compact size, wide input voltage range
• Package: 28-Lead QFN (Quad Flat No-Lead)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 0.8V to 55V
• Maximum Output Current: 3A
• Switching Frequency: 100kHz to 1MHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

The LT3922EUFD#TRPBF has a total of 28 pins. The pin configuration is as follows:

1. VIN: Input voltage pin
2. SW: Switch node connection for the internal power switch
3. GND: Ground reference pin
4. FB: Feedback pin for output voltage regulation
5. VCC: Supply voltage for internal control circuitry
6. SYNC: Synchronization input pin for external clock
7. RT: Timing resistor connection for setting switching frequency
8. SS: Soft-start capacitor connection for adjustable soft-start time
9. EN/UVLO: Enable/Undervoltage Lockout pin
10. PGND: Power ground reference pin
11. VOUT: Output voltage pin 12-28. NC: No Connection pins

Functional Features

• Wide input voltage range allows for versatile applications
• High efficiency ensures minimal power loss
• Compact size enables space-saving designs
• Adjustable soft-start time for controlled power-up sequence
• Synchronization input for precise timing requirements
• Undervoltage lockout protects against low input voltage conditions

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for flexibility in various applications - High efficiency reduces power consumption and heat dissipation - Compact size enables integration into space-constrained designs - Adjustable soft-start time ensures controlled power-up sequence - Synchronization input provides precise timing control

Disadvantages: - Limited maximum output current of 3A may not be suitable for high-power applications - Operating temperature range of -40°C to 125°C may restrict usage in extreme environments

Working Principles

The LT3922EUFD#TRPBF is a voltage regulator IC that utilizes a switching regulator topology. It operates by converting the input voltage to a regulated output voltage through a series of switching cycles. The internal power switch controls the energy flow, allowing for efficient power conversion. The feedback mechanism ensures the output voltage remains stable within the specified range. The device also incorporates various protection features, such as undervoltage lockout, to safeguard against abnormal operating conditions.

Detailed Application Field Plans

The LT3922EUFD#TRPBF finds applications in various fields, including:

1. Automotive: Power management for automotive electronics, LED lighting systems, and infotainment systems.
2. Industrial: Power supply for industrial automation equipment, motor drives, and control systems.
3. Telecommunications: Voltage regulation for telecom infrastructure, base stations, and network equipment.
4. Consumer Electronics: Power management for portable devices, audio/video equipment, and gaming consoles.
5. Renewable Energy: Power conversion for solar panels, wind turbines, and energy storage systems.

Detailed and Complete Alternative Models

1. LT3922EUF#TRPBF: Similar to LT3922EUFD#TRPBF but without the QFN package option.
2. LT3922EMSE#PBF: Similar specifications and features but with a different package (MSOP-16).
3. LT3922EUH#PBF: Higher maximum output current of 5A, suitable for higher power applications.

These alternative models offer similar functionality and can be considered as substitutes based on specific requirements.

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