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LTC7818IUJ#WTRPBF
+Lista de MateriaisBUCK/BUCK/BOOST SYNC CTL, 40V, 3
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FabricanteAnalog Devices Inc.
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Peça do Fabricante #LTC7818IUJ#WTRPBF
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Ficha Técnica LTC7818IUJ#WTRPBF DataSheet
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Especificações
| Atributo | Valor |
| Part Status | Active |
| Output Type | Transistor Driver |
| Function | Step-Up/Step-Down |
| Output Configuration | Positive |
| Topology | Buck-Boost |
| Number of Outputs | 1 |
| Output Phases | 1 |
| Voltage - Supply (Vcc/Vdd) | 4.5V ~ 40V |
| Frequency - Switching | 100kHz ~ 3MHz |
| Duty Cycle (Max) | 100% |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | 40-WFQFN Exposed Pad |
| Supplier Device Package | 40-QFN (6x6) |
Visão Geral
Description
Key features of the LTC7818IUJ#WTRPBF include a fixed frequency operation, selectable between 50kHz and 3MHz, allowing for optimization between efficiency and component size. Additionally, it offers programmable output voltages, soft-start, and tracking capabilities, as well as short-circuit protection and thermal shutdown to ensure robust performance and reliability.
The IC is housed in a compact 32-lead QFN package, which allows for efficient heat dissipation and a small footprint on the PCB. The "WTRPBF" suffix indicates RoHS compliance, ensuring the product is free from lead and other hazardous substances.
Equivalent
Features
Key features include:
1. High Efficiency: Synchronous rectification increases efficiency, especially at higher currents.
2. Wide Input Voltage Range: Supports 4.5V to 60V, ideal for diverse applications.
3. Adjustable Switching Frequency: Allows for optimization between efficiency and component size.
4. Current Mode Control: Provides fast transient response and easy loop compensation.
5. Low Quiescent Current: Improves efficiency at light loads.
6. Protection Features: Includes overvoltage, overcurrent, and thermal protection.
7. Compact Package: Available in a thermally enhanced 32-lead 5mm × 5mm QFN package.
These features make the LTC7818IUJ#WTRPBF a robust solution for efficient power regulation in high-performance systems.
Pinout
- Pin Count: The LTC7818IUJ#WTRPBF comes in a 32-lead QFN package.
- Function: It controls one synchronous boost and two synchronous buck converters. This allows for efficient step-up and step-down voltage conversion from a single IC. The chip features a wide input voltage range and is capable of providing high output current, making it suitable for various high-performance applications.
The device offers features such as current-mode control, accurate output voltage regulation, programmable switching frequency, and synchronization capabilities. It is designed for efficiency and thermal performance, fitting into complex power management schemes in industrial, automotive, and communication systems.