Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package | Tube |
| ProductStatus | Obsolete |
| OutputType | Transistor Driver |
| Function | Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Buck-Boost |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 4V ~ 30V |
| Frequency-Switching | 200kHz ~ 400kHz |
| DutyCycle(Max) | 99% |
| SynchronousRectifier | Yes |
| ClockSync | No |
| ControlFeatures | Current Limit, Enable, Power Good, Soft Start |
| OperatingTemperature | -40°C ~ 85°C (TJ) |
| MountingType | Surface Mount |
| Package/Case | 32-WFQFN Exposed Pad |
Tổng quan
Description
The LTC3780EUH is a high-performance, synchronous step-up (boost) switching regulator controller designed by Analog Devices (originally Linear Technology). It is capable of driving an N-channel MOSFET source-side switch and a P-channel synchronous switch, making it efficient for boosting DC input to a higher DC output voltage. The controller is particularly known for its wide input voltage range and high efficiency, making it suitable for battery-powered systems and other applications requiring efficient power conversion.
Key features of the LTC3780EUH include its ability to deliver high output current while maintaining efficiency, constant-frequency current mode architecture for stable and reliable operation, and integrated feedback compensation which simplifies the design process. Additionally, it has protection features such as overvoltage protection, soft-start capability to prevent inrush current, and short-circuit protection.
The LTC3780EUH is often chosen for applications requiring reliable, efficient power conversion, such as portable electronics, automotive systems, and industrial power supplies. Its package is typically the QFN type, facilitating compact and space-efficient designs.
Key features of the LTC3780EUH include its ability to deliver high output current while maintaining efficiency, constant-frequency current mode architecture for stable and reliable operation, and integrated feedback compensation which simplifies the design process. Additionally, it has protection features such as overvoltage protection, soft-start capability to prevent inrush current, and short-circuit protection.
The LTC3780EUH is often chosen for applications requiring reliable, efficient power conversion, such as portable electronics, automotive systems, and industrial power supplies. Its package is typically the QFN type, facilitating compact and space-efficient designs.
Equivalent
The LTC3780EUH is a high-performance buck-boost switching regulator. Equivalent products include:
1. Maxim Integrated MAX77812 - A high-efficiency buck-boost converter.
2. Texas Instruments LM5176 - A 4-switch buck-boost controller.
3. Analog Devices ADP5070 - A dual-output DC-to-DC regulator.
4. Microchip Technology MCP1630 - A high-speed PWM controller.
These alternatives provide similar functionalities for efficient power management applications. Always check the datasheets to ensure compatibility with your specific requirements.
1. Maxim Integrated MAX77812 - A high-efficiency buck-boost converter.
2. Texas Instruments LM5176 - A 4-switch buck-boost controller.
3. Analog Devices ADP5070 - A dual-output DC-to-DC regulator.
4. Microchip Technology MCP1630 - A high-speed PWM controller.
These alternatives provide similar functionalities for efficient power management applications. Always check the datasheets to ensure compatibility with your specific requirements.
Features
The LTC3780EUH is a high-performance, synchronous step-up/step-down DC/DC converter controller. It features a wide input voltage range of 4V to 38V, allowing it to handle both step-up and step-down conversions efficiently. The device is designed to provide a fixed output voltage with high efficiency, using low-resistance internal switches to minimize power losses.
Key features include:
1. Wide Input Range: Operates from 4V to 38V, suitable for various applications.
2. High Efficiency: Synchronous switching improves efficiency over a wide output current range.
3. Constant Frequency Operation: Maintains stable frequency across load and line variations.
4. Output Current Capability: Can deliver high output currents, depending on external components.
5. Adjustable Switching Frequency: Programmable from 200kHz to 600kHz.
6. Soft-Start Capability: Allows controlled ramp-up of output voltage, minimizing inrush currents.
7. Under-Voltage Lockout: Protects against operation at low input voltages.
8. Thermal Shutdown: Ensures protection against overheating.
These features make the LTC3780EUH suitable for a wide range of power supply applications, including automotive, industrial, and portable electronics.
Key features include:
1. Wide Input Range: Operates from 4V to 38V, suitable for various applications.
2. High Efficiency: Synchronous switching improves efficiency over a wide output current range.
3. Constant Frequency Operation: Maintains stable frequency across load and line variations.
4. Output Current Capability: Can deliver high output currents, depending on external components.
5. Adjustable Switching Frequency: Programmable from 200kHz to 600kHz.
6. Soft-Start Capability: Allows controlled ramp-up of output voltage, minimizing inrush currents.
7. Under-Voltage Lockout: Protects against operation at low input voltages.
8. Thermal Shutdown: Ensures protection against overheating.
These features make the LTC3780EUH suitable for a wide range of power supply applications, including automotive, industrial, and portable electronics.
Pinout
The LTC3780EUH is a high-performance, synchronous step-up DC/DC controller. It is designed for applications requiring high efficiency and compact size. The LTC3780EUH is housed in a 32-lead (5mm x 5mm) QFN package.
Here is a concise summary of its pin count and functions:
- Pin Count: 32 pins.
- Key Pin Functions:
- VIN, VOUT: Input and output voltage sense.
- GND: Ground connection.
- SW: Switch node connection to the inductor.
- TG, BG: Top gate and bottom gate drive outputs for external MOSFETs.
- FB: Feedback input for output voltage regulation.
- ISET: Current limit set pin.
- COMP: Compensation pin for stability.
- SS: Soft-start control.
- RUN/SS: Run control and soft-start input.
- ITH: Error amplifier compensation.
- SYNC: Synchronization input to external clock.
- VCC: Internal 5V bias supply.
This pin configuration supports its role in efficiently managing power conversion with features like current mode control, soft-start, and external synchronization.
Here is a concise summary of its pin count and functions:
- Pin Count: 32 pins.
- Key Pin Functions:
- VIN, VOUT: Input and output voltage sense.
- GND: Ground connection.
- SW: Switch node connection to the inductor.
- TG, BG: Top gate and bottom gate drive outputs for external MOSFETs.
- FB: Feedback input for output voltage regulation.
- ISET: Current limit set pin.
- COMP: Compensation pin for stability.
- SS: Soft-start control.
- RUN/SS: Run control and soft-start input.
- ITH: Error amplifier compensation.
- SYNC: Synchronization input to external clock.
- VCC: Internal 5V bias supply.
This pin configuration supports its role in efficiently managing power conversion with features like current mode control, soft-start, and external synchronization.
Manufacturer
The LTC3780EUH is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves a wide range of industries, including communications, industrial, automotive, healthcare, and consumer electronics. Analog Devices is known for its high-performance products and solutions that are used in various applications such as data conversion, power management, signal processing, and sensing.
Application
The LTC3780EUH is a high-performance buck-boost switching regulator controller, used in various applications requiring efficient power conversion. Key application areas include battery-powered systems, where it manages power supply efficiently between battery and load, automotive electronics for stable voltage output despite fluctuations, and renewable energy systems, like solar power converters, ensuring consistent power delivery. It's also used in portable electronics, industrial power supplies, and communication equipment, providing a reliable power solution in systems needing both step-up and step-down voltage conversion capabilities. Its wide input and output voltage range, along with high efficiency, make it versatile for diverse power management applications.
Package
The LTC3780EUH is typically available in a 5mm x 7mm 32-lead QFN (Quad Flat No-leads) package.