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LTC3780EUH
+Lista de MateriaisIC POWER MANAGEMENT
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FabricanteAnalog Devices Inc.
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Peça do Fabricante #LTC3780EUH
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Pacote QFN-32
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Em Estoque6134
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Especificações
| Atributo | Valor |
| Package / Case | Tube |
| Part Status | Obsolete |
| 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) | 4V ~ 30V |
| Frequency - Switching | 200kHz ~ 400kHz |
| Duty Cycle(Max) | 99% |
| Synchronous Rectifier | Yes |
| Clock Sync | No |
| Control Features | Current Limit, Enable, Power Good, Soft Start |
| Operating Temperature | -40°C ~ 85°C (TJ) |
| Mounting Type | Surface Mount |
Visão Geral
Description
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
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
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
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.