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LT3791EFE-1
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FabricanteAnalog Devices Inc.
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Peça do Fabricante #LT3791EFE-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
Key features include a high switching frequency that allows for smaller external components, programmable soft start, and adjustable output voltage. The device also incorporates protections like overcurrent, thermal shutdown, and input under-voltage lockout to ensure reliability and safety in operation.
Its integrated features enable straightforward implementation, and the LT3791EFE-1 is compatible with a wide range of topologies, making it versatile for different design needs. With its high efficiency and compact design, the LT3791EFE-1 is ideal for applications requiring precise voltage regulation and improved thermal performance.
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, ensuring uniform brightness.
3. High Efficiency: Achieves up to 95% efficiency, minimizing heat generation.
4. Flexible Topologies: Supports buck, boost, and buck-boost configurations.
5. Programmable Switching Frequency: Adjustable from 100kHz to 1MHz, allowing for optimized performance based on application needs.
6. Isolation Capability: Can be used for isolated applications with additional components.
7. Integrated Power Switch: Reduces component count and simplifies design.
8. Thermal Protection: Includes features like thermal shutdown to protect against overheating.
9. Dimming Control: Supports various dimming methods, including PWM and analog control for versatile lighting options.
10. Compact Package: Offered in a thermally enhanced 16-lead TSSOP package, suitable for space-constrained designs.
These features make the LT3791EFE-1 suitable for LED lighting, automotive, and industrial applications.
Pinout
1. Power Supply: VCC pin for input voltage and GND for ground.
2. Control: Pins for PWM dimming, frequency setting, and current sense.
3. Feedback: Pins for voltage feedback and regulation.
4. Protection: Overvoltage and undervoltage lockout features are integrated.
5. Output: Drivers for controlling external MOSFETs for LED driving.
This IC is used for applications requiring high efficiency in LED driving, offering features for robust performance and safety.
Manufacturer
Analog Devices is known for its innovative solutions in signal processing and has a strong emphasis on research and development. The company designs products that help enhance the performance and efficiency of electronic systems, focusing on data conversion, signal conditioning, and power management. The LT3791EFE-1 specifically is a high-voltage LED driver optimized for driving multiple LEDs in a variety of applications, showcasing Analog Devices' commitment to providing high-quality and reliable semiconductor solutions.