UCC3808APWTR-1G4
Product Overview
Category
UCC3808APWTR-1G4 belongs to the category of integrated circuits (ICs).
Use
This product is commonly used in power management applications.
Characteristics
- Low-power, high-performance voltage mode PWM controller
- Wide input voltage range
- Adjustable frequency and maximum duty cycle
- Integrated soft-start function
- Overcurrent protection
- Undervoltage lockout
- Error amplifier with precise reference voltage
Package
UCC3808APWTR-1G4 is available in a small SOT-23-6 package.
Essence
The essence of UCC3808APWTR-1G4 lies in its ability to efficiently regulate and control power in various electronic systems.
Packaging/Quantity
This product is typically packaged in reels, with 3000 units per reel.
Specifications
- Input Voltage Range: 2.7V to 18V
- Output Voltage Range: 0.8V to VCC - 2V
- Maximum Duty Cycle: 100%
- Frequency Range: 50kHz to 1MHz
- Operating Temperature Range: -40°C to 85°C
Pin Configuration
UCC3808APWTR-1G4 has the following pin configuration:
- COMP: Compensation pin for error amplifier
- CS: Current sense input for overcurrent protection
- GND: Ground reference
- FB: Feedback pin for output voltage regulation
- RT/CT: Timing components connection for frequency and maximum duty cycle adjustment
- VCC: Power supply input
Functional Features
- Voltage mode control with adjustable frequency and maximum duty cycle
- Soft-start function for controlled startup
- Overcurrent protection to prevent damage to the system
- Undervoltage lockout to ensure proper operation under low voltage conditions
- Error amplifier with precise reference voltage for accurate regulation
Advantages and Disadvantages
Advantages
- Wide input voltage range allows for versatile applications
- Adjustable frequency and duty cycle provide flexibility in power management
- Integrated soft-start function ensures smooth startup
- Overcurrent protection safeguards the system from damage
- Undervoltage lockout enhances reliability under low voltage conditions
Disadvantages
- Limited output voltage range may not be suitable for certain applications requiring higher voltages
- SOT-23-6 package may limit heat dissipation capabilities in high-power applications
Working Principles
UCC3808APWTR-1G4 operates based on the voltage mode control principle. It compares the feedback voltage (FB) with a precise reference voltage to regulate the output voltage. The error amplifier adjusts the duty cycle of the PWM signal generated by the internal oscillator, which controls the power delivered to the load. The soft-start function gradually increases the duty cycle during startup to prevent excessive inrush current. Overcurrent protection monitors the current sense input (CS) and shuts down the controller if the current exceeds a set threshold. Undervoltage lockout disables the controller when the input voltage falls below a specified level.
Detailed Application Field Plans
UCC3808APWTR-1G4 finds application in various power management systems, including but not limited to: - DC-DC converters - Switching power supplies - Battery chargers - LED drivers - Industrial automation equipment - Automotive electronics
Detailed and Complete Alternative Models
Some alternative models that can be considered as alternatives to UCC3808APWTR-1G4 are: - LM2576-ADJ: Adjustable voltage regulator with similar features - LT1073: Micropower DC-DC converter with integrated switch - MC34063A: Step-up, step-down, and inverting switching regulator
These alternative models offer similar functionality and can be used as substitutes depending on specific requirements.
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10个与UCC3808APWTR-1G4在技术解决方案中的应用相关的常见问题及解答
Sure! Here are 10 common questions and answers related to the application of UCC3808APWTR-1G4 in technical solutions:
Q1: What is UCC3808APWTR-1G4? A1: UCC3808APWTR-1G4 is a specific model of integrated circuit (IC) that belongs to the UCC3808 family of PWM controllers. It is commonly used in power management applications.
Q2: What is the purpose of UCC3808APWTR-1G4? A2: The main purpose of UCC3808APWTR-1G4 is to regulate and control the switching of power transistors in various power supply designs, such as DC-DC converters and AC-DC converters.
Q3: What are the key features of UCC3808APWTR-1G4? A3: Some key features of UCC3808APWTR-1G4 include adjustable frequency operation, soft-start capability, cycle-by-cycle current limiting, and overvoltage protection.
Q4: How does UCC3808APWTR-1G4 help in power supply designs? A4: UCC3808APWTR-1G4 provides precise control over the switching of power transistors, allowing for efficient power conversion and regulation in various power supply designs.
Q5: Can UCC3808APWTR-1G4 be used in both step-up and step-down converters? A5: Yes, UCC3808APWTR-1G4 can be used in both step-up (boost) and step-down (buck) converters, making it versatile for different power supply requirements.
Q6: What is the input voltage range supported by UCC3808APWTR-1G4? A6: UCC3808APWTR-1G4 supports an input voltage range of typically 2.7V to 18V, making it suitable for a wide range of power supply applications.
Q7: How does UCC3808APWTR-1G4 handle overvoltage protection? A7: UCC3808APWTR-1G4 has built-in overvoltage protection that monitors the output voltage and shuts down the power transistor if it exceeds a certain threshold, protecting the circuit from damage.
Q8: Can UCC3808APWTR-1G4 be used in high-power applications? A8: UCC3808APWTR-1G4 is designed for low to medium power applications. For high-power applications, other ICs with higher current ratings may be more suitable.
Q9: Are there any specific application notes or reference designs available for UCC3808APWTR-1G4? A9: Yes, Texas Instruments (the manufacturer of UCC3808APWTR-1G4) provides application notes and reference designs that can help engineers in implementing UCC3808APWTR-1G4 in their designs.
Q10: Where can I find more information about UCC3808APWTR-1G4? A10: You can find detailed information about UCC3808APWTR-1G4, including datasheets, application notes, and technical resources on the official website of Texas Instruments or through authorized distributors.