Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Tube |
| Part Status | Obsolete |
| Function | Step-Up, Step-Up/Step-Down |
| Output Configuration | Positive or Negative |
| Topology | Boost, Cuk, Flyback, SEPIC |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 5V |
| Voltage - Input (Max) | 80V |
| Voltage - Output (Min/Fixed) | 1.6V |
| Voltage - Output (Max) | 84V (Switch) |
| Current - Output | 3.3A (Switch) |
| Frequency - Switching | 100kHz ~ 1MHz |
| Synchronous Rectifier | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
Tổng quan
Description
The LT3958EUHE is a versatile DC/DC converter IC designed by Analog Devices, formerly Linear Technology. It is optimized for LED driver applications but can also be used in various power supply and voltage regulation roles. This chip can function in multiple configurations, such as a boost converter, SEPIC, or flyback converter.
Key features include its wide input voltage range, typically from 5V to 80V, and its ability to deliver high output currents, making it suitable for driving high-current LEDs. The device operates with a fixed frequency and includes a high-side current sense resistor, which simplifies current regulation.
It incorporates protection features such as overvoltage, overcurrent, and thermal shutdown. The LT3958EUHE is typically available in a thermally enhanced 36-pin package, which aids in heat dissipation, ensuring reliable operation under high-power conditions. Its high efficiency and flexible design make it a popular choice for engineers developing automotive, industrial, and general-purpose LED lighting systems.
Key features include its wide input voltage range, typically from 5V to 80V, and its ability to deliver high output currents, making it suitable for driving high-current LEDs. The device operates with a fixed frequency and includes a high-side current sense resistor, which simplifies current regulation.
It incorporates protection features such as overvoltage, overcurrent, and thermal shutdown. The LT3958EUHE is typically available in a thermally enhanced 36-pin package, which aids in heat dissipation, ensuring reliable operation under high-power conditions. Its high efficiency and flexible design make it a popular choice for engineers developing automotive, industrial, and general-purpose LED lighting systems.
Equivalent
The LT3958EUHE is a DC/DC converter from Analog Devices. Equivalent products from other manufacturers might include the LM3478 from Texas Instruments, the MAX5035 from Maxim Integrated (now part of Analog Devices), or the NCP3065 from ON Semiconductor. It's important to compare specific parameters like input/output voltage range, switching frequency, and power output to ensure compatibility with your application.
Features
The LT3958EUHE is a versatile and efficient DC/DC converter from Analog Devices. It is designed for LED driver applications, offering features such as:
1. Wide Input Voltage Range: Operates from 5V to 80V, accommodating a variety of power sources.
2. Output Flexibility: Capable of delivering output voltages up to 80V, suitable for high-power LEDs and other components.
3. Current Mode Control: Ensures accurate and stable current regulation, essential for consistent LED brightness.
4. Built-in Protection: Features overvoltage, overcurrent, and thermal protection to enhance reliability and safeguard circuits.
5. Adjustable Switching Frequency: Allows users to set the frequency between 100kHz and 1MHz, optimizing efficiency and performance.
6. High Efficiency: Achieves up to 94% efficiency, reducing energy loss and heat generation.
7. Analog and PWM Dimming: Supports dimming options for precise control over LED brightness.
8. Compact Package: Available in a 5mm x 6mm QFN package, saving space on circuit boards.
These features make the LT3958EUHE ideal for applications requiring robust and flexible LED driving capabilities.
1. Wide Input Voltage Range: Operates from 5V to 80V, accommodating a variety of power sources.
2. Output Flexibility: Capable of delivering output voltages up to 80V, suitable for high-power LEDs and other components.
3. Current Mode Control: Ensures accurate and stable current regulation, essential for consistent LED brightness.
4. Built-in Protection: Features overvoltage, overcurrent, and thermal protection to enhance reliability and safeguard circuits.
5. Adjustable Switching Frequency: Allows users to set the frequency between 100kHz and 1MHz, optimizing efficiency and performance.
6. High Efficiency: Achieves up to 94% efficiency, reducing energy loss and heat generation.
7. Analog and PWM Dimming: Supports dimming options for precise control over LED brightness.
8. Compact Package: Available in a 5mm x 6mm QFN package, saving space on circuit boards.
These features make the LT3958EUHE ideal for applications requiring robust and flexible LED driving capabilities.
Pinout
The LT3958EUHE is a DC/DC converter IC designed for high current, high voltage applications. It is typically used for LED drivers and other power regulation applications. The LT3958EUHE comes in a 5mm x 6mm, 32-lead plastic QFN (Quad Flat No-Lead) package.
The main functions of this IC include:
1. Step-Up (Boost) Converter: It converts a lower input voltage to a higher output voltage.
2. Step-Down (Buck) Converter: It is capable of converting a higher input voltage to a lower output voltage.
3. LED Driver: It can drive high power LEDs with a constant current.
4. Current Mode Control: Offers improved stability and fast transient response.
5. Programmable Switching Frequency: Allows optimization of efficiency and performance.
Key features such as wide input voltage range, high efficiency, and thermal protection make it suitable for various applications in automotive, industrial, and consumer electronics. Always refer to the manufacturer's datasheet for detailed specifications and pin configurations.
The main functions of this IC include:
1. Step-Up (Boost) Converter: It converts a lower input voltage to a higher output voltage.
2. Step-Down (Buck) Converter: It is capable of converting a higher input voltage to a lower output voltage.
3. LED Driver: It can drive high power LEDs with a constant current.
4. Current Mode Control: Offers improved stability and fast transient response.
5. Programmable Switching Frequency: Allows optimization of efficiency and performance.
Key features such as wide input voltage range, high efficiency, and thermal protection make it suitable for various applications in automotive, industrial, and consumer electronics. Always refer to the manufacturer's datasheet for detailed specifications and pin configurations.
Manufacturer
The LT3958EUHE is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company specializing in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs). The company serves a wide range of industries, including automotive, communications, industrial, healthcare, and consumer electronics, offering solutions that bridge the physical and digital worlds with technologies that sense, measure, and connect.
Application
The LT3958EUHE is a versatile DC/DC converter designed for LED drivers and voltage regulator applications. Its primary application areas include automotive lighting systems, where it efficiently manages LED headlamps, taillights, and interior lighting. It's also used in industrial lighting for high-power LED illumination and architectural lighting projects requiring precise brightness control. Additionally, the LT3958EUHE is suitable for battery-operated devices needing efficient power management, as well as electronic signage and display backlighting applications. Its ability to operate in step-up, step-down, or inverting configurations makes it adaptable for various power supply designs requiring high efficiency and reliability.
Package
The LT3958EUHE is a DC/DC converter IC from Analog Devices, provided in a 32-lead (5mm x 5mm) plastic QFN (Quad Flat No-leads) package.
