LT3513EUHF#PBF

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Step-Up DC/DC Converter
• Package: 20-Lead QFN
• Essence: Efficiently converts low voltage input to higher voltage output
• Packaging/Quantity: Tape & Reel, 250 units per reel

Specifications

• Input Voltage Range: 2.5V to 30V
• Output Voltage Range: Up to 40V
• Switching Frequency: 1MHz
• Maximum Output Current: 3A
• Efficiency: Up to 94%
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3513EUHF#PBF has a 20-lead QFN package with the following pin configuration:

1. VIN: Input Voltage
2. SW: Switch Node Connection
3. GND: Ground
4. FB: Feedback Pin
5. VCC: IC Supply Voltage
6. SS: Soft-Start Pin
7. PGND: Power Ground
8. LX: Inductor Connection
9. NC: No Connect
10. NC: No Connect
11. NC: No Connect
12. NC: No Connect
13. NC: No Connect
14. NC: No Connect
15. NC: No Connect
16. NC: No Connect
17. NC: No Connect
18. NC: No Connect
19. NC: No Connect
20. NC: No Connect

Functional Features

• High efficiency step-up DC/DC converter
• Wide input voltage range for versatile applications
• Adjustable output voltage up to 40V
• Internal compensation for simplified design
• Programmable soft-start for controlled power-up
• Overvoltage and overcurrent protection

Advantages and Disadvantages

Advantages: - High efficiency results in less power loss - Wide input voltage range allows for flexibility in power source - Adjustable output voltage suits various applications - Internal compensation simplifies design process - Programmable soft-start ensures smooth power-up - Protection features enhance reliability

Disadvantages: - Limited maximum output current of 3A - Requires careful thermal management due to high efficiency

Working Principles

The LT3513EUHF#PBF is a step-up DC/DC converter that efficiently converts a low voltage input to a higher voltage output. It utilizes a switching regulator topology to achieve high efficiency, reducing power loss during the conversion process. The IC incorporates internal compensation, simplifying the design process for the user.

The device operates by controlling the switch node connection (SW pin) to regulate the output voltage based on the feedback received from the FB pin. The input voltage (VIN) can range from 2.5V to 30V, while the output voltage can be adjusted up to 40V. The LT3513EUHF#PBF also features programmable soft-start and protection mechanisms such as overvoltage and overcurrent protection.

Detailed Application Field Plans

The LT3513EUHF#PBF is suitable for a wide range of applications that require efficient step-up voltage conversion. Some potential application fields include:

1. Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices often require higher voltages than the available battery voltage. The LT3513EUHF#PBF can efficiently boost the battery voltage to meet the requirements of these devices.

2. Automotive systems: In automotive applications, where the input voltage can vary significantly, the LT3513EUHF#PBF can provide a stable and adjustable output voltage for various subsystems such as infotainment systems, lighting, and sensors.

3. Industrial equipment: Many industrial devices require higher voltages for proper operation. The LT3513EUHF#PBF can be used in applications like motor control, factory automation, and power supply units to efficiently step up the input voltage.

4. LED lighting: LED drivers often need a higher voltage than the available power source. The LT3513EUHF#PBF can be employed to drive LEDs in lighting applications, providing efficient and adjustable voltage conversion.

Detailed and Complete Alternative Models

1. LT3514EUHF#PBF: Similar to LT3513EUHF#PBF but with a higher maximum output current of 4A.
2. LT3515EUHF#PBF: Step-up DC/DC converter with an integrated Schottky diode for improved efficiency.
3. LT3516EUHF#PBF: Step-up DC/DC converter with additional features such as synchronization capability and adjustable switching frequency.

These alternative models offer similar functionality to the LT3513EUHF#PBF but may have different specifications or additional features that