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LT3791IFE-1
+Lista de MateriaisIC REGULATOR
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FabricanteAnalog Devices Inc.
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Peça do Fabricante #LT3791IFE-1
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Especificações
| Atributo | Valor |
| Part Status | Obsolete |
| Output Type | Transistor Driver |
| Function | Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Buck-Boost |
| Number of Outputs | 2 |
| Output Phases | 2 |
| Voltage - Supply (Vcc/Vdd) | 4.7V ~ 60V |
| Frequency - Switching | 200kHz ~ 700kHz |
| Synchronous Rectifier | Yes |
| Clock Sync | Yes |
| Control Features | Enable, Frequency Control, Soft Start |
| Operating Temperature | -40°C ~ 125°C |
| Mounting Type | Surface Mount |
| Package / Case | 38-TFSOP (0.173", 4.40mm Width) Exposed Pad |
| Supplier Device Package | 38-TSSOP-EP |
| Base Product Number | LT3791 |
Visão Geral
Description
The controller supports both step-down (buck) and step-up (boost) configurations, allowing for versatile applications in driving LED strings. The LT3791IFE-1 also includes features such as thermal shutdown, overvoltage protection, and soft-start to prevent inrush current during startup.
This device is typically used in automotive, industrial, and consumer lighting solutions, where precise control over LED brightness and power efficiency is crucial. Its compact package and ease of use make it a popular choice among designers looking to implement reliable LED lighting solutions.
Equivalent
Features
1. Wide Input Voltage Range: Operates from 4.5V to 60V, accommodating various power sources.
2. Constant Current Control: Provides precise LED current regulation, enhancing performance and efficiency.
3. Adjustable Frequency: Switching frequency can be set between 100 kHz to 1 MHz, allowing flexibility in design.
4. High Efficiency: Achieves up to 95% efficiency, minimizing heat generation and improving reliability.
5. Integrated Compensation: Built-in compensation simplifies circuit design and enhances stability.
6. PWM Dimming: Supports PWM dimming for adjustable brightness with minimal flicker.
7. Thermal Protection: Features thermal shutdown to prevent overheating.
8. Flexible Output Configurations: Allows for single or multiple LED string configurations.
Overall, the LT3791IFE-1 is ideal for driving high-brightness LEDs in applications like automotive lighting, architectural lighting, and industrial displays.
Pinout
Key functions of the LT3791IFE-1 include:
1. Constant Current Control: Maintains a consistent LED current for uniform brightness.
2. Boost Converter Operation: Capable of stepping up the input voltage to drive LEDs effectively.
3. PWM Dimming: Supports pulse-width modulation for adjustable brightness levels.
4. Thermal Regulation: Protects the LED from overheating by adjusting the output current based on temperature.
5. Wide Input Voltage Range: Accepts input voltages from 4.5V to 60V.
6. Multiple LED Support: Configurable for driving multiple strings of LEDs.
Overall, the LT3791IFE-1 is optimized for high efficiency and performance in LED applications.
Manufacturer
Analog Devices specializes in providing solutions for signal processing applications, enabling customers to achieve high levels of performance and efficiency in their circuits. The LT3791IFE-1 specifically is a high-performance LED driver designed for applications such as automotive lighting and general illumination, showcasing the company’s focus on high-tech and innovative electronic solutions.