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LTC3855EUJ#TRPBF
IC REG CTRLR BUCK 40QFN
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- 資料表 LTC3855EUJ#TRPBF DataSheet
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規格
| Series | PolyPhase® |
| Part Status | Active |
| Base Product Number | LTC3855 |
| Output Type | Transistor Driver |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Number of Outputs | 2 |
| Output Phases | 2 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 38V |
| Frequency - Switching | 250kHz ~ 770kHz |
| Duty Cycle (Max) | 95% |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Control Features | Current Limit, Enable, Frequency Control, Phase Control, Power Good, Soft Start, Tracking |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package | 40-WFQFN Exposed Pad |
| Supplier Device Package | 40-QFN (6x6) |
| Packaging | Cut Tape (CT), Tape & Reel (TR) |
概述
Description
The LTC3855EUJ#TRPBF is a high-performance, dual-output synchronous step-down DC/DC controller designed by Analog Devices. It is typically used in applications that require efficient power regulation from a higher voltage source to lower voltage levels. The device features a wide input voltage range (4.5V to 60V), making it suitable for various industrial and automotive applications.
Key features include:
- Dual outputs with current sharing capability.
- Adjustable output voltage from 0.8V to 5V.
- Integrated power-saving modes for improved efficiency.
- Fast transient response and built-in protections (overvoltage, overcurrent).
- Simple control loop, enabling easy design and implementation.
The LTC3855 is ideal for powering microcontrollers, FPGAs, and other digital circuits, providing reliable and efficient power management. Its robust performance and versatility make it a popular choice among engineers in the power electronics sector. For detailed specifications, refer to the manufacturer's datasheet.
Key features include:
- Dual outputs with current sharing capability.
- Adjustable output voltage from 0.8V to 5V.
- Integrated power-saving modes for improved efficiency.
- Fast transient response and built-in protections (overvoltage, overcurrent).
- Simple control loop, enabling easy design and implementation.
The LTC3855 is ideal for powering microcontrollers, FPGAs, and other digital circuits, providing reliable and efficient power management. Its robust performance and versatility make it a popular choice among engineers in the power electronics sector. For detailed specifications, refer to the manufacturer's datasheet.
Features
The LTC3855EUJ#TRPBF is a high-performance DC/DC controller designed for synchronous step-down applications. Key features include:
1. Wide Input Range: Operates from 4.5V to 60V input voltage, making it suitable for various power sources.
2. Output Voltage: Adjustable output voltage range from 0.8V to 15V.
3. High Efficiency: Capable of achieving efficiencies over 95%, which reduces heat and increases reliability.
4. Current Mode Control: Provides fast transient response and stable operation across a wide range of loads.
5. Integrated Drivers: Includes high-side and low-side MOSFET drivers, simplifying design and reducing external component count.
6. Frequency Synchronization: Allows synchronization to an external clock for reduced noise and improved performance.
7. Power Good Indicator: Monitors output voltage and offers a power good signal for system monitoring.
8. Programmable Switching Frequency: Adjustable frequency from 250kHz to 1MHz enables optimization for size and efficiency.
These features make the LTC3855EUJ#TRPBF ideal for automotive, industrial, and telecom applications.
1. Wide Input Range: Operates from 4.5V to 60V input voltage, making it suitable for various power sources.
2. Output Voltage: Adjustable output voltage range from 0.8V to 15V.
3. High Efficiency: Capable of achieving efficiencies over 95%, which reduces heat and increases reliability.
4. Current Mode Control: Provides fast transient response and stable operation across a wide range of loads.
5. Integrated Drivers: Includes high-side and low-side MOSFET drivers, simplifying design and reducing external component count.
6. Frequency Synchronization: Allows synchronization to an external clock for reduced noise and improved performance.
7. Power Good Indicator: Monitors output voltage and offers a power good signal for system monitoring.
8. Programmable Switching Frequency: Adjustable frequency from 250kHz to 1MHz enables optimization for size and efficiency.
These features make the LTC3855EUJ#TRPBF ideal for automotive, industrial, and telecom applications.
Package
The LTC3855EUJ#TRPBF is packaged in a 28-lead TSSOP (Thin Shrink Small Outline Package) with a tape and reel format for efficient handling and assembly.
Pinout
The LTC3855EUJ#TRPBF is a dual synchronous step-down (buck) controller from Analog Devices, specifically designed for high-performance power management applications. It features a pin count of 32 pins in a 5mm x 5mm QFN package.
The primary functions of the LTC3855 include:
1. Voltage Regulation: It regulates output voltage with a wide input voltage range.
2. Current Sharing: Supports multiple controllers for load sharing.
3. Phase Syncing: Allows synchronization of multiple devices for reduced ripple.
4. Compensation: Integrated compensation simplifies circuit design.
5. Power Good Output: Monitors output voltage and signals status.
6. Soft-Start: Controls inrush current during startup.
These features make the LTC3855 highly suitable for applications requiring efficient power management, such as telecommunications, industrial systems, and automotive electronics.
The primary functions of the LTC3855 include:
1. Voltage Regulation: It regulates output voltage with a wide input voltage range.
2. Current Sharing: Supports multiple controllers for load sharing.
3. Phase Syncing: Allows synchronization of multiple devices for reduced ripple.
4. Compensation: Integrated compensation simplifies circuit design.
5. Power Good Output: Monitors output voltage and signals status.
6. Soft-Start: Controls inrush current during startup.
These features make the LTC3855 highly suitable for applications requiring efficient power management, such as telecommunications, industrial systems, and automotive electronics.
Manufacturer
The manufacturer of the LTC3855EUJ#TRPBF is Analog Devices, Inc. Analog Devices is a leading global company specializing in high-performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits. Founded in 1965, the company focuses on providing innovative solutions for various applications, including industrial, automotive, communications, and consumer electronics. They are known for their expertise in signal processing and power management technologies, making them a key player in the semiconductor industry. The LTC3855EUJ#TRPBF is a dual-output, synchronous step-down controller designed for efficient power management, reflecting the company's commitment to delivering advanced solutions for complex electronic systems.
Application
The LTC3855EUJ#TRPBF is a dual-output synchronous step-down voltage regulator typically used in applications such as telecommunications, data centers, and industrial equipment. It is suitable for powering FPGAs, microcontrollers, and other digital loads that require efficient voltage regulation. Its features include high efficiency, adjustable output voltage, and the ability to handle high input voltages, making it ideal for battery-powered systems and distributed power architectures.
Equivalent
The LTC3855EUJ#TRPBF is a high-performance, dual-output voltage regulator controller. Equivalent products include the LTC3856, LTC3857, and LM5117. These alternatives offer similar features such as dual-output regulation and synchronization capabilities. Always verify the specifications and pin compatibility for your specific application.
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