LT3798HMSE#PBF

Product Overview

Category

The LT3798HMSE#PBF belongs to the category of integrated circuits (ICs) used in power management applications.

Use

This IC is specifically designed for driving and controlling LED lighting systems. It provides a versatile solution for various lighting applications, including automotive, industrial, and architectural lighting.

Characteristics

• High efficiency: The LT3798HMSE#PBF offers high efficiency power conversion, ensuring optimal energy utilization.
• Wide input voltage range: It can operate with input voltages ranging from 4V to 60V, making it suitable for a wide range of applications.
• Dimming control: The IC supports various dimming techniques, such as analog, PWM, and I2C, allowing precise control over the brightness of the LEDs.
• Fault protection: It incorporates comprehensive fault protection features, including overvoltage protection, overcurrent protection, and thermal shutdown, ensuring safe operation and preventing damage to the system.

Package and Quantity

The LT3798HMSE#PBF is available in a small MSOP-16 package. Each package contains one IC.

Specifications

• Input Voltage Range: 4V to 60V
• Output Current: Up to 1A
• Switching Frequency: Adjustable up to 2MHz
• Dimming Control: Analog, PWM, I2C
• Operating Temperature Range: -40°C to 125°C

Pin Configuration

The LT3798HMSE#PBF has a total of 16 pins. The pin configuration is as follows:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VCC: Supply voltage pin
4. FB: Feedback pin for regulating output voltage
5. CS: Current sense pin
6. EN/UVLO: Enable/Undervoltage lockout pin
7. DIM: Dimming control input pin
8. PWM: Pulse width modulation input pin
9. I2C: I2C communication interface pin
10. SDA: Serial data line for I2C communication
11. SCL: Serial clock line for I2C communication
12. VOUT: Output voltage pin
13. SW: Switching node pin
14. LX: Inductor connection pin
15. COMP: Compensation pin for stability control
16. RT/CT: Timing resistor/capacitor connection pin

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• Versatile dimming control options enable precise brightness adjustment.
• Comprehensive fault protection features ensure system safety and reliability.
• High switching frequency capability enables compact and efficient designs.
• Integrated compensation circuitry simplifies external component requirements.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Wide input voltage range - Versatile dimming control options - Comprehensive fault protection features

Disadvantages: - Limited output current capacity (up to 1A)

Working Principles

The LT3798HMSE#PBF operates as a buck-boost LED driver, utilizing a high-frequency switching regulator topology. It regulates the output voltage by adjusting the duty cycle of the internal power switch. The IC incorporates a feedback loop that continuously monitors the output voltage and adjusts the switch duty cycle accordingly to maintain a stable output.

Application Field Plans

The LT3798HMSE#PBF finds applications in various fields, including: - Automotive lighting systems - Industrial lighting systems - Architectural lighting systems - Signage and display lighting - Backlighting for LCD panels

Alternative Models

• LT3798HMS#PBF
• LT3798EMSE#PBF
• LT3798EMS#PBF
• LT3798EFE#PBF

These alternative models offer similar functionality and characteristics to the LT3798HMSE#PBF, providing flexibility in design choices.

In conclusion, the LT3798HMSE#PBF is a versatile LED driver IC that offers high efficiency, wide input voltage range, and comprehensive dimming control options. With its compact package and advanced features, it is suitable for various lighting applications.