UCC3808DTR-1
Product Overview
Category
UCC3808DTR-1 belongs to the category of integrated circuits (ICs) specifically designed for power management applications.
Use
This IC is commonly used in various power supply designs, including switch-mode power supplies (SMPS), battery chargers, and LED drivers.
Characteristics
- UCC3808DTR-1 is a high-performance voltage mode PWM controller.
- It operates with a wide input voltage range, making it suitable for different power supply applications.
- The device offers precise control over the output voltage and current, ensuring stable and efficient power delivery.
- It incorporates various protection features such as overvoltage protection (OVP), undervoltage lockout (UVLO), and thermal shutdown.
Package
UCC3808DTR-1 is available in a small surface-mount package known as SOIC-8 (Small Outline Integrated Circuit).
Essence
The essence of UCC3808DTR-1 lies in its ability to regulate and control the power flow in electronic devices, ensuring reliable and efficient operation.
Packaging/Quantity
UCC3808DTR-1 is typically packaged in reels or tubes, containing a quantity of 2500 units per reel/tube.
Specifications
- Input Voltage Range: 4.5V to 12V
- Output Voltage Range: 0V to Vcc
- Maximum Duty Cycle: 100%
- Operating Temperature Range: -40°C to 85°C
- Switching Frequency: Adjustable up to 1MHz
- Error Amplifier Gain Bandwidth: 2.5MHz
- Oscillator Frequency Range: 50kHz to 500kHz
Detailed Pin Configuration
UCC3808DTR-1 features an 8-pin configuration:
- COMP: Compensation pin for error amplifier feedback.
- FB: Feedback pin for output voltage regulation.
- CS: Current sense pin for current limit control.
- GND: Ground reference pin.
- VCC: Power supply input pin.
- RT/CT: Timing components connection pins for oscillator frequency and soft-start time control.
- OUT: Output pin for driving external power devices.
- SS/TR: Soft-start and shutdown control pin.
Functional Features
- Voltage mode PWM control with adjustable switching frequency.
- Error amplifier for precise voltage regulation.
- Soft-start function to prevent inrush current during startup.
- Overvoltage protection (OVP) to safeguard against excessive output voltage.
- Undervoltage lockout (UVLO) for reliable operation under low input voltage conditions.
- Thermal shutdown protection to prevent device overheating.
Advantages and Disadvantages
Advantages
- Wide input voltage range allows for versatile application possibilities.
- Precise voltage and current control ensure stable power delivery.
- Compact SOIC-8 package enables space-efficient designs.
- Comprehensive protection features enhance system reliability.
Disadvantages
- Limited maximum duty cycle may restrict certain applications requiring higher duty cycles.
- Lack of built-in fault detection and reporting capabilities.
Working Principles
UCC3808DTR-1 operates based on the voltage mode PWM control technique. It compares the feedback voltage from the output with a reference voltage to generate an error signal. This error signal is then amplified and used to adjust the duty cycle of the PWM signal, which controls the power delivered to the load. By regulating the duty cycle, the IC maintains the desired output voltage and current levels.
Detailed Application Field Plans
UCC3808DTR-1 finds extensive use in various power management applications, including: - Switch-mode power supplies (SMPS) for computers, telecommunication equipment, and industrial machinery. - Battery chargers for portable devices, electric vehicles, and renewable energy systems. - LED drivers for lighting applications, such as streetlights, automotive lighting, and display backlighting.
Detailed and Complete Alternative Models
Some alternative models that offer similar functionality to UCC3808DTR-1 are: - UC3842: A popular PWM controller with a wider input voltage range and additional fault protection features. - TL494: A versatile PWM controller offering adjustable frequency and duty cycle control. - SG3525: An integrated circuit designed for high-frequency switching power supplies.
These alternative models can be considered based on specific application requirements and design constraints.
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技術ソリューションにおける UCC3808DTR-1 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 UCC3808DTR-1:
Q1: What is UCC3808DTR-1? A1: UCC3808DTR-1 is a high-performance, low-power current mode PWM controller used in various power supply applications.
Q2: What is the operating voltage range of UCC3808DTR-1? A2: The operating voltage range of UCC3808DTR-1 is typically between 4.5V and 25V.
Q3: What is the maximum switching frequency supported by UCC3808DTR-1? A3: The maximum switching frequency supported by UCC3808DTR-1 is typically 1MHz.
Q4: Can UCC3808DTR-1 be used in both buck and boost converter topologies? A4: Yes, UCC3808DTR-1 can be used in both buck and boost converter topologies.
Q5: What is the maximum duty cycle supported by UCC3808DTR-1? A5: The maximum duty cycle supported by UCC3808DTR-1 is typically 100%.
Q6: Does UCC3808DTR-1 have built-in protection features? A6: Yes, UCC3808DTR-1 has built-in protection features such as overvoltage protection, undervoltage lockout, and thermal shutdown.
Q7: What is the typical output current capability of UCC3808DTR-1? A7: The typical output current capability of UCC3808DTR-1 is around 500mA.
Q8: Can UCC3808DTR-1 operate in a wide temperature range? A8: Yes, UCC3808DTR-1 can operate in a wide temperature range, typically from -40°C to 85°C.
Q9: Does UCC3808DTR-1 require an external oscillator? A9: No, UCC3808DTR-1 has an internal oscillator, so it does not require an external one.
Q10: What are the typical applications of UCC3808DTR-1? A10: UCC3808DTR-1 is commonly used in power supply applications such as battery chargers, LED drivers, and DC-DC converters.
Please note that the answers provided here are general and may vary depending on specific datasheet specifications and application requirements.