UCC2808ADTR-1G4
Product Overview
Category
UCC2808ADTR-1G4 belongs to the category of integrated circuits (ICs).
Use
This IC is commonly used in power management applications, specifically for controlling and regulating DC-DC converters.
Characteristics
- Low-power current mode PWM controller
- Wide input voltage range: 2.7V to 12V
- Adjustable frequency up to 1MHz
- Integrated oscillator with programmable soft-start
- Precision reference voltage
- Error amplifier with high gain
- Cycle-by-cycle current limiting
- Overvoltage protection
- Undervoltage lockout
- Thermal shutdown protection
Package
UCC2808ADTR-1G4 is available in a small surface-mount package known as SOIC-8 (Small Outline Integrated Circuit).
Essence
The essence of UCC2808ADTR-1G4 lies in its ability to efficiently control and regulate the output voltage of DC-DC converters, ensuring stable and reliable power supply in various electronic devices.
Packaging/Quantity
UCC2808ADTR-1G4 is typically packaged in reels or tubes, containing 2500 units per reel/tube.
Specifications
- Input Voltage Range: 2.7V to 12V
- Output Voltage Range: 0V to VCC
- Maximum Duty Cycle: 100%
- Operating Temperature Range: -40°C to +85°C
- Oscillator Frequency Range: 50kHz to 1MHz
- Reference Voltage: 1.25V
- Maximum Output Current: 500mA
- Package Type: SOIC-8
Detailed Pin Configuration
- COMP: Compensation pin for error amplifier feedback.
- CS: Current sense input for cycle-by-cycle current limiting.
- GND: Ground reference for the IC.
- VREF: Reference voltage output.
- FB: Feedback pin for regulating the output voltage.
- RT/CT: Timing components connection for oscillator frequency adjustment.
- OUT: Output pin for driving external power MOSFET.
- VCC: Power supply input.
Functional Features
- Low-power consumption
- High-frequency operation
- Adjustable output voltage
- Current limiting protection
- Overvoltage protection
- Undervoltage lockout
- Thermal shutdown protection
- Soft-start functionality
Advantages and Disadvantages
Advantages
- Wide input voltage range allows for versatile applications.
- Integrated features reduce the need for additional external components.
- Efficient control mechanism ensures stable output voltage.
- Compact package size enables space-saving designs.
- Comprehensive protection mechanisms enhance system reliability.
Disadvantages
- Limited maximum output current may restrict usage in high-power applications.
- Requires careful consideration of external component selection for optimal performance.
Working Principles
UCC2808ADTR-1G4 operates as a low-power current mode PWM controller. It utilizes an internal oscillator to generate a pulse-width modulated signal, which controls the duty cycle of the output voltage. The error amplifier compares the feedback voltage with the reference voltage to regulate the output voltage accurately. The cycle-by-cycle current limiting feature protects the circuit from excessive current flow. Additional protection mechanisms such as overvoltage protection, undervoltage lockout, and thermal shutdown ensure safe operation.
Detailed Application Field Plans
UCC2808ADTR-1G4 finds extensive application in various power management systems, including: - Battery-powered devices - Portable electronics - Industrial automation - LED lighting - Telecommunications equipment - Automotive electronics - Renewable energy systems
Detailed and Complete Alternative Models
- UCC2808A-1G4
- UCC2808AD-1G4
- UCC2808ADR-1G4
- UCC2808APW-1G4
- UCC2808AQD-1G4
These alternative models offer similar functionality and performance, providing flexibility in design choices.
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技術ソリューションにおける UCC2808ADTR-1G4 の適用に関連する 10 件の一般的な質問と回答をリストします。
Sure! Here are 10 common questions and answers related to the application of UCC2808ADTR-1G4 in technical solutions:
Q: What is the UCC2808ADTR-1G4? A: The UCC2808ADTR-1G4 is a high-performance, low-power, current-mode PWM controller used for controlling power supplies.
Q: What are the key features of the UCC2808ADTR-1G4? A: Some key features include low start-up current, adjustable operating frequency, cycle-by-cycle current limiting, and integrated soft-start.
Q: What is the typical application of the UCC2808ADTR-1G4? A: The UCC2808ADTR-1G4 is commonly used in offline flyback converters, LED drivers, battery chargers, and other power supply applications.
Q: How does the UCC2808ADTR-1G4 help in power supply designs? A: The UCC2808ADTR-1G4 provides control and regulation of the power supply output voltage and current, ensuring stable and efficient operation.
Q: What is the input voltage range supported by the UCC2808ADTR-1G4? A: The UCC2808ADTR-1G4 supports an input voltage range of 7V to 25V.
Q: Can the UCC2808ADTR-1G4 handle high currents? A: No, the UCC2808ADTR-1G4 is a controller IC and cannot handle high currents directly. It requires external power devices to handle high currents.
Q: How can I adjust the operating frequency of the UCC2808ADTR-1G4? A: The operating frequency can be adjusted by changing the value of an external resistor connected to the RT pin of the UCC2808ADTR-1G4.
Q: Does the UCC2808ADTR-1G4 have protection features? A: Yes, the UCC2808ADTR-1G4 provides protection against overvoltage, undervoltage, and overcurrent conditions.
Q: Can I use the UCC2808ADTR-1G4 in battery-powered applications? A: Yes, the UCC2808ADTR-1G4 has a low start-up current and can be used in battery-powered applications with appropriate power management.
Q: Are there any application notes or reference designs available for the UCC2808ADTR-1G4? A: Yes, Texas Instruments provides application notes and reference designs that can help in implementing the UCC2808ADTR-1G4 in various technical solutions.
Please note that these answers are general and may vary depending on specific design requirements and application scenarios. It is always recommended to refer to the datasheet and relevant documentation for accurate information.