LT3478EFE#TRPBF

Product Overview

Category

LT3478EFE#TRPBF belongs to the category of integrated circuits (ICs).

Use

It is commonly used as a step-up DC/DC converter.

Characteristics

• High efficiency
• Wide input voltage range
• Adjustable output voltage
• Low quiescent current
• Internal soft-start
• Overvoltage protection
• Thermal shutdown

Package

LT3478EFE#TRPBF is available in an 16-pin TSSOP package.

Essence

The essence of LT3478EFE#TRPBF lies in its ability to efficiently convert a lower input voltage to a higher output voltage, making it suitable for various applications.

Packaging/Quantity

This product is typically packaged in reels and the quantity per reel may vary depending on the manufacturer.

Specifications

• Input Voltage Range: 2.5V to 36V
• Output Voltage Range: Up to 40V
• Switching Frequency: 200kHz to 2MHz
• Maximum Output Current: 3A
• Quiescent Current: 100µA
• Operating Temperature Range: -40°C to 125°C

Detailed Pin Configuration

1. VIN: Input voltage pin
2. SW: Switching node connection
3. FB: Feedback pin for output voltage regulation
4. GND: Ground reference
5. SS: Soft-start capacitor connection
6. VCC: Supply voltage for internal circuitry
7. SYNC: External synchronization input
8. RT: Timing resistor connection for switching frequency control
9. CT: Timing capacitor connection for switching frequency control
10. PGND: Power ground reference
11. EN/UVLO: Enable/Undervoltage lockout pin
12. BST: Bootstrap capacitor connection
13. LX: Inductor connection
14. COMP: Compensation pin for loop stability
15. SS/TR: Soft-start/Tracking pin
16. VOUT: Output voltage pin

Functional Features

• High efficiency conversion
• Adjustable output voltage
• Internal soft-start for controlled startup
• Overvoltage protection to safeguard connected devices
• Thermal shutdown to prevent overheating

Advantages and Disadvantages

Advantages

• Wide input voltage range allows for versatile applications
• High efficiency results in reduced power loss
• Adjustable output voltage provides flexibility
• Low quiescent current minimizes standby power consumption
• Internal soft-start ensures smooth startup
• Overvoltage protection enhances system reliability
• Thermal shutdown prevents damage due to excessive heat

Disadvantages

• Limited maximum output current of 3A may not be suitable for high-power applications
• Requires external components for operation, increasing complexity

Working Principles

LT3478EFE#TRPBF operates as a step-up DC/DC converter by using an inductor to store energy from the input voltage and then releasing it to the output at a higher voltage. The switching frequency can be adjusted using external timing components connected to the RT and CT pins. The feedback mechanism regulates the output voltage based on the FB pin's voltage level.

Detailed Application Field Plans

LT3478EFE#TRPBF finds application in various fields, including: - Battery-powered devices - LED lighting systems - Portable electronics - Industrial equipment - Automotive electronics

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to LT3478EFE#TRPBF are: - LM2577-ADJ - MAX1771 - TPS61220

These models can be considered based on specific requirements and design constraints.

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