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UCC3808DTR-2
+Lista de MateriaisIC REG CTRLR PUSH-PULL 8SOIC
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FabricanteTexas Instruments
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Peça do Fabricante #UCC3808DTR-2
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Pacote SOIC-8
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Em Estoque6765
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Especificações
| Atributo | Valor |
| Package | Tape & Reel (TR) |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Push-Pull |
| NumberofOutputs | 2 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 4.1V ~ 15V |
| Frequency-Switching | 194kHz |
| DutyCycle(Max) | 49% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Frequency Control |
| OperatingTemperature | 0°C ~ 70°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
Visão Geral
Description
Key features of the UCC3808DTR-2 include a wide input voltage range, low start-up and operating currents, and an on-chip error amplifier. It operates with a fixed frequency set by an external resistor and capacitor, which provides design flexibility. The chip also features built-in protection mechanisms such as undervoltage lockout and pulse-by-pulse current limiting, enhancing the safety and reliability of power supply designs.
The device is housed in an 8-pin SOIC package, which is suitable for space-constrained applications. It supports applications in telecommunications, consumer electronics, and industrial equipment. The UCC3808DTR-2 is often chosen for its ability to deliver efficient power conversion while minimizing external component count and complexity.
Equivalent
Features
1. High-Frequency Operation: It supports a maximum frequency of up to 1 MHz, enabling smaller and more efficient power supply designs.
2. Low Start-Up Current: With a start-up current of 50 µA, it is suitable for energy-efficient applications.
3. Precision Reference: Offers a precise 5 V reference voltage with ±1% accuracy for stable operation.
4. Soft-Start Capability: Integrates an internal soft-start function to limit inrush current and protect the system during start-up.
5. Under-Voltage Lockout (UVLO): Provides a UVLO feature to ensure reliable operation by preventing the controller from turning on until the input voltage reaches a specified level.
6. Shutdown Capability: Allows for easy shutdown to save power in low-demand scenarios.
7. Output Drive: Features a totem-pole output stage capable of sourcing or sinking 1 A, suitable for driving power MOSFETs.
8. Wide Temperature Range: Operates over an industrial temperature range, enhancing its applicability in various environments.
These features make the UCC3808DTR-2 versatile and efficient for power supply applications.
Pinout
1. VDD (Pin 1): Power supply input for the device.
2. GND (Pin 2): Ground reference point for all device operations.
3. OUT (Pin 3): The output pin that drives the power MOSFET.
4. CS (Pin 4): Current sense input for over-current protection.
5. RT/CT (Pin 5): A node used to set the oscillator frequency by connecting a resistor and capacitor.
6. FB (Pin 6): Feedback pin for voltage regulation.
7. COMP (Pin 7): Compensation pin for the error amplifier used to stabilize the control loop.
8. VREF (Pin 8): Reference voltage output.
Overall, the UCC3808DTR-2 is designed for use in power supply applications, offering efficient control and regulation for DC-DC conversion processes.
Manufacturer
Application
1. DC-DC Converters: Used in step-up, step-down, or buck-boost configurations for efficient voltage conversion.
2. AC-DC Power Supplies: Integral in off-line and isolated converters, such as computer power supplies.
3. Battery Chargers: Efficiently manages charging operations in various battery-powered devices.
4. Industrial Power Systems: Supports power management in industrial automation and control systems.
5. Telecommunications: Utilized in power regulation for telecom infrastructure.
6. Consumer Electronics: Used in devices requiring stable and efficient power management.
These applications benefit from the UCC3808DTR-2's features like high-frequency operation, precise voltage regulation, and low start-up current.