Thông số kỹ thuật
| thuộc tính | Giá trị |
| Package / Case | Tube |
| Part Status | Obsolete |
| Function | Step-Down |
| Output Configuration | Positive |
| Topology | Buck |
| Output Type | Adjustable |
| Number of Outputs | 1 |
| Voltage - Input (Min) | 2.25V |
| Voltage - Input (Max) | 5.5V |
| Voltage - Output (Min/Fixed) | 0.6V |
| Voltage - Output (Max) | 5.5V |
| Current - Output | 4A |
| Frequency - Switching | 300kHz ~ 4MHz |
| Synchronous Rectifier | Yes |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
Tổng quan
Description
The LTC3614EUDD is a high-efficiency, monolithic synchronous step-down regulator from Analog Devices (previously Linear Technology). It is designed to deliver up to 4A of continuous output current from a wide input voltage range of 2.25V to 5.5V, making it suitable for various power supply applications. The device operates using a constant-frequency, current-mode architecture, which helps ensure fast transient response and reliable operation.
One of the key features of the LTC3614EUDD is its ability to achieve up to 95% efficiency, thanks to its integrated low on-resistance power MOSFETs. It also offers a low dropout operation and a low quiescent current, which enhances battery life in portable applications. The regulator supports adjustable output voltages down to 0.6V, with a high degree of accuracy.
Additional features include a programmable switching frequency, internal compensation, soft-start capability, and protection mechanisms like overcurrent and thermal shutdown. The LTC3614EUDD is housed in a compact, thermally-enhanced 16-lead QFN package, making it suitable for space-constrained applications.
One of the key features of the LTC3614EUDD is its ability to achieve up to 95% efficiency, thanks to its integrated low on-resistance power MOSFETs. It also offers a low dropout operation and a low quiescent current, which enhances battery life in portable applications. The regulator supports adjustable output voltages down to 0.6V, with a high degree of accuracy.
Additional features include a programmable switching frequency, internal compensation, soft-start capability, and protection mechanisms like overcurrent and thermal shutdown. The LTC3614EUDD is housed in a compact, thermally-enhanced 16-lead QFN package, making it suitable for space-constrained applications.
Equivalent
The LTC3614EUDD is a high-efficiency, monolithic synchronous step-down regulator. Equivalent products from other manufacturers could include the TPS54620 from Texas Instruments, the ADP2386 from Analog Devices, and the MPQ8633 from Monolithic Power Systems. These alternatives offer similar functionalities such as high efficiency, compact design, and synchronous operation, suitable for power management applications. Always verify compatibility with your specific application requirements.
Features
The LTC3614EUDD is a high-efficiency, monolithic synchronous step-down regulator. It can deliver up to 4A of continuous output current from a 2.25V to 5.5V input supply. Key features include a programmable switching frequency up to 4MHz for compact solution size, and its no-load quiescent current is only 75µA, making it efficient even at low loads. It employs a current-mode architecture for fast transient response, and it has a low dropout operation to extend battery life in portable devices. The regulator offers a soft-start feature to minimize inrush current during start-up and supports tracking and sequencing applications. Additionally, the LTC3614 includes cycle-by-cycle current limit, short-circuit protection, and thermal shutdown for enhanced reliability and protection. It is available in a compact 4mm × 5mm QFN package, making it suitable for space-constrained applications.
Pinout
The LTC3614EUDD is a high-efficiency, monolithic synchronous step-down regulator from Analog Devices. It is housed in a 32-pin (5mm × 5mm) QFN package. The device integrates a high-performance step-down converter designed for applications requiring high efficiency and compact size.
Key functions and features include:
1. Wide Input Voltage Range: It operates from an input voltage of 4V to 15V, making it versatile for various power supply applications.
2. Output Current: Can deliver up to 4A of continuous output current.
3. High Efficiency: The synchronous architecture ensures high efficiency across a broad load range.
4. Programmable Output Voltage: The output voltage can be adjusted using an external feedback resistor divider.
5. Fast Transient Response: Features fast transient response with an internal compensation network.
6. Low Output Ripple: Provides low output voltage ripple due to its constant frequency and current-mode operation.
7. Additional Features: Includes soft-start, power-good indicator, and thermal shutdown protection for reliable operation.
With these specifications, the LTC3614EUDD is suitable for various applications, including telecommunications, industrial systems, and distributed power systems.
Key functions and features include:
1. Wide Input Voltage Range: It operates from an input voltage of 4V to 15V, making it versatile for various power supply applications.
2. Output Current: Can deliver up to 4A of continuous output current.
3. High Efficiency: The synchronous architecture ensures high efficiency across a broad load range.
4. Programmable Output Voltage: The output voltage can be adjusted using an external feedback resistor divider.
5. Fast Transient Response: Features fast transient response with an internal compensation network.
6. Low Output Ripple: Provides low output voltage ripple due to its constant frequency and current-mode operation.
7. Additional Features: Includes soft-start, power-good indicator, and thermal shutdown protection for reliable operation.
With these specifications, the LTC3614EUDD is suitable for various applications, including telecommunications, industrial systems, and distributed power systems.
Manufacturer
The LTC3614EUDD is manufactured by Analog Devices, Inc. Analog Devices is a company that specializes in the design and manufacturing of a wide range of semiconductor products, including integrated circuits (ICs) used in analog and digital signal processing. They provide solutions for a variety of industries, including communications, automotive, industrial, healthcare, and consumer electronics. Analog Devices is known for its innovation in high-performance analog, mixed-signal, and digital signal processing technologies.
Application
The LTC3614EUDD is a high-efficiency, monolithic synchronous step-down regulator. Its application areas include powering microprocessors, FPGAs, and ASICs in computing, telecommunications, and networking equipment. It is also used in distributed power systems, industrial automation, and automotive electronics. The regulator is suitable for portable and battery-powered devices due to its high efficiency and compact design. Its ability to provide a stable output even under varying input conditions makes it ideal for point-of-load applications in complex electronic systems.
Package
The LTC3614EUDD is housed in a 28-lead, 4mm x 5mm plastic QFN (Quad Flat No-Lead) package.
