사양
| 속성 | 가치 |
| Package | Tape & Reel (TR),Cut Tape (CT),Bulk |
| ProductStatus | Active |
| OutputType | Transistor Driver |
| Function | Step-Up, Step-Up/Step-Down |
| OutputConfiguration | Positive |
| Topology | Boost, Flyback, Forward Converter |
| NumberofOutputs | 1 |
| OutputPhases | 1 |
| Voltage-Supply(Vcc/Vdd) | 7.4V ~ 12V |
| Frequency-Switching | 46kHz |
| DutyCycle(Max) | 49% |
| SynchronousRectifier | No |
| ClockSync | No |
| ControlFeatures | Frequency Control |
| OperatingTemperature | -40°C ~ 85°C (TA) |
| MountingType | Surface Mount |
| Package/Case | 8-SOIC (0.154, 3.90mm Width) |
개요
Description
The UCC2801DTR is a low-power, high-performance, current-mode pulse width modulation (PWM) controller from Texas Instruments. It is designed for off-line and DC-DC converter applications, offering features that improve efficiency and reliability in power supply designs. This device operates at a fixed frequency and provides leading-edge modulation with a fast current-sense-to-output delay, making it suitable for high-frequency power supply applications.
Key features of the UCC2801DTR include:
1. Wide operating voltage range (up to 12V), which allows for flexibility in various applications.
2. Low start-up and operating currents that help minimize power loss.
3. Integrated leading-edge blanking, which prevents false triggering and enhances noise immunity.
4. Internal soft-start function that reduces stress on components during power-up.
5. High-speed oscillator with a fixed frequency for precise control.
It is often used in applications such as battery chargers, power adapters, and small power supplies, where efficiency and compactness are essential. The device is typically available in a small, surface-mount package for ease of integration into tight spaces.
Key features of the UCC2801DTR include:
1. Wide operating voltage range (up to 12V), which allows for flexibility in various applications.
2. Low start-up and operating currents that help minimize power loss.
3. Integrated leading-edge blanking, which prevents false triggering and enhances noise immunity.
4. Internal soft-start function that reduces stress on components during power-up.
5. High-speed oscillator with a fixed frequency for precise control.
It is often used in applications such as battery chargers, power adapters, and small power supplies, where efficiency and compactness are essential. The device is typically available in a small, surface-mount package for ease of integration into tight spaces.
Equivalent
The UCC2801DTR is a high-speed PWM controller. Equivalent or similar products include:
1. UCC2800 series (e.g., UCC2800D UCC2802Dby Texas Instruments
2. UC3842 series (e.g., UC3842D, UC3843D) by various manufacturers
3. TL494 series by Texas Instruments or its equivalents
4. NCP1200 by ON Semiconductor
These components serve similar functions in power supply control applications, but always verify specific requirements before substituting.
1. UCC2800 series (e.g., UCC2800D UCC2802Dby Texas Instruments
2. UC3842 series (e.g., UC3842D, UC3843D) by various manufacturers
3. TL494 series by Texas Instruments or its equivalents
4. NCP1200 by ON Semiconductor
These components serve similar functions in power supply control applications, but always verify specific requirements before substituting.
Features
The UCC2801DTR is a high-performance current-mode pulse-width modulation (PWM) controller. Key features include:
1. Current-Mode Control: Offers improved transient response and simplified loop compensation.
2. Low Startup Current: Reduces standby power consumption.
3. Operating Frequency: Programmable up to 500 kHz for flexibility in design.
4. Undervoltage Lockout (UVLO): Ensures the device operates above specific voltage thresholds, enhancing safety and reliability.
5. Leading-Edge Blanking: Minimizes switching noise.
6. Soft Start Capability: Reduces stress on power components during startup.
7. High-Voltage Tolerance: Supports wide input voltage range.
8. Output Drive: Capable of driving MOSFETs and IGBTs efficiently.
9. Low Output Deadtime: Maximizes duty cycle.
10. Slew-Rate Controlled Gate Drive: Reduces electromagnetic interference (EMI).
11. Programmable Oscillator: Provides design flexibility with adjustable frequency.
12. Thermal Shutdown Protection: Prevents damage from overheating.
These features make the UCC2801DTR suitable for a wide variety of applications requiring efficient and reliable power conversion, like power supplies and DC-DC converters.
1. Current-Mode Control: Offers improved transient response and simplified loop compensation.
2. Low Startup Current: Reduces standby power consumption.
3. Operating Frequency: Programmable up to 500 kHz for flexibility in design.
4. Undervoltage Lockout (UVLO): Ensures the device operates above specific voltage thresholds, enhancing safety and reliability.
5. Leading-Edge Blanking: Minimizes switching noise.
6. Soft Start Capability: Reduces stress on power components during startup.
7. High-Voltage Tolerance: Supports wide input voltage range.
8. Output Drive: Capable of driving MOSFETs and IGBTs efficiently.
9. Low Output Deadtime: Maximizes duty cycle.
10. Slew-Rate Controlled Gate Drive: Reduces electromagnetic interference (EMI).
11. Programmable Oscillator: Provides design flexibility with adjustable frequency.
12. Thermal Shutdown Protection: Prevents damage from overheating.
These features make the UCC2801DTR suitable for a wide variety of applications requiring efficient and reliable power conversion, like power supplies and DC-DC converters.
Pinout
The UCC2801DTR is an 8-pin integrated circuit primarily used as a PWM controller for power supply applications. Here is a brief outline of its pin functions:
1. COMP - Compensation Pin: Connects to the compensation network to stabilize the control loop.
2. FB - Feedback Pin: Receives the voltage feedback from the output for regulation.
3. CS - Current Sense Pin: Monitors the current flowing through the power switch.
4. RT/CT - Timing Resistor/Capacitor Pin: Sets the oscillator frequency with an external resistor and capacitor.
5. GND - Ground Pin: Circuit ground reference.
6. OUT - Output Pin: Drives the gate of the power MOSFET or IGBT.
7. VDD - Supply Voltage Pin: Powers the IC and requires a decoupling capacitor.
8. VREF - Reference Voltage Pin: Provides a stable reference voltage output for internal and external use.
The UCC2801DTR is typically used for DC-DC converters, battery chargers, and offline power supplies, offering features such as low startup current, high-frequency operation, and built-in protection features like over-current protection.
1. COMP - Compensation Pin: Connects to the compensation network to stabilize the control loop.
2. FB - Feedback Pin: Receives the voltage feedback from the output for regulation.
3. CS - Current Sense Pin: Monitors the current flowing through the power switch.
4. RT/CT - Timing Resistor/Capacitor Pin: Sets the oscillator frequency with an external resistor and capacitor.
5. GND - Ground Pin: Circuit ground reference.
6. OUT - Output Pin: Drives the gate of the power MOSFET or IGBT.
7. VDD - Supply Voltage Pin: Powers the IC and requires a decoupling capacitor.
8. VREF - Reference Voltage Pin: Provides a stable reference voltage output for internal and external use.
The UCC2801DTR is typically used for DC-DC converters, battery chargers, and offline power supplies, offering features such as low startup current, high-frequency operation, and built-in protection features like over-current protection.
Manufacturer
The UCC2801DTR is manufactured by Texas Instruments. Texas Instruments (TI) is a global semiconductor company that designs and manufactures a wide range of electronic components and systems. The company, headquartered in Dallas, Texas, is known for its development of analog chips and embedded processors, which are used in various applications, including automotive, industrial, consumer electronics, and communications equipment. TI focuses on innovations in areas such as power management, microcontrollers, and digital signal processing.
Application
The UCC2801DTR is a low-power, high-performance current-mode PWM controller, commonly used in various power supply applications. Its typical application areas include:
1. AC/DC Converters: Used in power supplies for converting alternating current (AC) to direct current (DC).
2. Power Factor Correction (PFC): Enhances efficiency in power supply systems by correcting the power factor.
3. Battery Chargers: Applied in managing and optimizing battery charging processes.
4. LED Drivers: Utilized in driving LED lights efficiently.
5. DC/DC Converters: Facilitates voltage conversion in power management systems.
6. Standby Power Supplies: Used in providing low-power standby modes for electronic devices.
These applications benefit from the controller's efficiency, compactness, and flexibility in design.
1. AC/DC Converters: Used in power supplies for converting alternating current (AC) to direct current (DC).
2. Power Factor Correction (PFC): Enhances efficiency in power supply systems by correcting the power factor.
3. Battery Chargers: Applied in managing and optimizing battery charging processes.
4. LED Drivers: Utilized in driving LED lights efficiently.
5. DC/DC Converters: Facilitates voltage conversion in power management systems.
6. Standby Power Supplies: Used in providing low-power standby modes for electronic devices.
These applications benefit from the controller's efficiency, compactness, and flexibility in design.
Package
The UCC2801DTR is an integrated circuit that comes in a surface-mount package known as a SOIC-8 (Small Outline Integrated Circuit with 8 pins). This package type is commonly used for space-efficient designs.
