LT3514EUFD#TRPBF

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency step-up DC/DC converter - Wide input voltage range: 3V to 30V - Adjustable output voltage up to 40V - Internal 1.5A, 60V power switch - Low shutdown current: <1µA - Programmable soft-start - Thermal shutdown protection - Small package size: 16-pin QFN

Package: 16-pin QFN (Quad Flat No-Lead)

Essence: The LT3514EUFD#TRPBF is a high efficiency step-up DC/DC converter designed for power management applications. It provides a compact and efficient solution for boosting input voltages to higher output voltages.

Packaging/Quantity: The LT3514EUFD#TRPBF is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 3V to 30V
• Output Voltage Range: Up to 40V (adjustable)
• Switching Frequency: 1MHz
• Maximum Output Current: 1.5A
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to 125°C
• Package Type: 16-pin QFN

Detailed Pin Configuration

The LT3514EUFD#TRPBF has the following pin configuration:

1. VIN: Input voltage pin
2. SW: Switch node connection
3. FB: Feedback pin for output voltage regulation
4. GND: Ground reference
5. VOUT: Output voltage pin
6. SS: Soft-start pin
7. EN: Enable pin
8. PGND: Power ground reference
9. BST: Boost capacitor connection
10. VCC: IC supply voltage
11. NC: No connection
12. NC: No connection
13. NC: No connection
14. NC: No connection
15. NC: No connection
16. NC: No connection

Functional Features

• High efficiency step-up DC/DC conversion
• Wide input voltage range for versatile applications
• Adjustable output voltage to meet specific requirements
• Internal power switch for compact design
• Low shutdown current for power-saving operation
• Programmable soft-start for controlled startup
• Thermal shutdown protection for device safety

Advantages and Disadvantages

Advantages: - High efficiency conversion reduces power loss - Wide input voltage range allows for flexibility in power sources - Adjustable output voltage meets various application needs - Compact package size saves board space - Low shutdown current minimizes power consumption - Programmable soft-start prevents excessive inrush current - Thermal shutdown protection ensures device safety

Disadvantages: - Limited maximum output current (1.5A) - Higher switching frequency may require careful PCB layout

Working Principles

The LT3514EUFD#TRPBF operates as a step-up DC/DC converter, converting a lower input voltage to a higher output voltage. It utilizes an internal power switch to efficiently boost the input voltage. The feedback pin (FB) is used to regulate the output voltage by adjusting the duty cycle of the internal switch. The soft-start pin (SS) allows for controlled startup, preventing excessive inrush current. The enable pin (EN) can be used to turn the converter on or off. The device also incorporates thermal shutdown protection to prevent damage due to excessive temperature.

Detailed Application Field Plans

The LT3514EUFD#TRPBF is suitable for a wide range of power management applications, including but not limited to: - Battery-powered devices - Portable electronics - Industrial equipment - Automotive systems - LED lighting - Telecom infrastructure

Detailed and Complete Alternative Models

Some alternative models to the LT3514EUFD#TRPBF that offer similar functionality include: - LT3511: Similar step-up DC/DC converter with adjustable output voltage - LT3515: Step-up DC/DC converter with higher maximum output current (3A) - LT3518: Step-up DC/DC converter with integrated Schottky diode - LT3519: Step-up DC/DC converter with higher switching frequency (2MHz)

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

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