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UCC3808APW-1
Overview
Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: - Low-power, high-performance current mode PWM controller - Designed for use in offline and DC-to-DC power supplies - Provides necessary control functions for a variety of applications
Package: TSSOP-8
Essence: The UCC3808APW-1 is an integrated circuit that serves as a current mode PWM controller. It is widely used in power management applications, particularly in offline and DC-to-DC power supplies.
Packaging/Quantity: The UCC3808APW-1 is available in a TSSOP-8 package. It is typically sold in reels or tubes containing multiple units.
Specifications
The UCC3808APW-1 offers the following specifications:
- Supply Voltage Range: 4.5V to 12V
- Operating Temperature Range: -40°C to 85°C
- Maximum Duty Cycle: 100%
- Oscillator Frequency Range: 50kHz to 500kHz
- Output Current: ±0.25A
- Error Amplifier Bandwidth: 10kHz
- Soft Start Time: Adjustable
Pin Configuration
The UCC3808APW-1 features the following pin configuration:
- COMP: Compensation Pin
- CS: Current Sense Input
- RT/CT: Timing Components Connection
- GND: Ground
- VREF: Reference Voltage Output
- VCC: Supply Voltage Input
- OUT: Output
- SS/TR: Soft Start/Undervoltage Lockout
Functional Features
The UCC3808APW-1 offers the following functional features:
- Current mode control with adjustable switching frequency
- Internal soft start for controlled startup
- Undervoltage lockout for protection against low input voltage conditions
- Error amplifier with adjustable gain for precise regulation
- Overcurrent protection for enhanced safety
Advantages and Disadvantages
Advantages: - Low-power consumption - High-performance current mode control - Wide operating temperature range - Compact TSSOP-8 package for space-constrained applications
Disadvantages: - Limited output current capability - Requires external timing components for frequency adjustment
Working Principles
The UCC3808APW-1 operates based on the current mode control principle. It compares the sensed current through the CS pin with a reference voltage to regulate the output. The error amplifier adjusts the duty cycle of the PWM signal, which controls the power delivered to the load. The soft start feature ensures a gradual increase in output voltage during startup, preventing excessive inrush current.
Detailed Application Field Plans
The UCC3808APW-1 finds application in various power management scenarios, including: - Offline power supplies - DC-to-DC converters - Battery chargers - LED drivers - Industrial control systems
Detailed and Complete Alternative Models
Some alternative models that can be considered as alternatives to the UCC3808APW-1 are: - UC3842 - TL494 - SG3525 - IRS2153D
These models offer similar functionality and can be used as substitutes depending on specific requirements.
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10 domande e risposte comuni relative all'applicazione di UCC3808APW-1 nelle soluzioni tecniche
Sure! Here are 10 common questions and answers related to the application of UCC3808APW-1 in technical solutions:
Q: What is UCC3808APW-1? A: UCC3808APW-1 is a high-performance, low-power current mode PWM controller used in various power supply applications.
Q: What are the key features of UCC3808APW-1? A: Some key features include low start-up and operating currents, adjustable switching frequency, cycle-by-cycle current limiting, and integrated soft-start.
Q: What is the typical input voltage range for UCC3808APW-1? A: The typical input voltage range is between 7V and 25V.
Q: Can UCC3808APW-1 be used in both buck and boost converter topologies? A: Yes, UCC3808APW-1 can be used in both buck and boost converter topologies.
Q: How does UCC3808APW-1 provide protection against overcurrent conditions? A: UCC3808APW-1 provides cycle-by-cycle current limiting, which helps protect against overcurrent conditions.
Q: Is UCC3808APW-1 suitable for high-frequency switching applications? A: Yes, UCC3808APW-1 is suitable for high-frequency switching applications as it offers an adjustable switching frequency.
Q: Can UCC3808APW-1 operate in a wide temperature range? A: Yes, UCC3808APW-1 has a wide operating temperature range of -40°C to 85°C.
Q: Does UCC3808APW-1 have built-in soft-start functionality? A: Yes, UCC3808APW-1 has an integrated soft-start feature that helps reduce inrush current during start-up.
Q: What is the maximum duty cycle supported by UCC3808APW-1? A: The maximum duty cycle supported by UCC3808APW-1 is 100%.
Q: Can UCC3808APW-1 be used in battery-powered applications? A: Yes, UCC3808APW-1 can be used in battery-powered applications as it operates at low start-up and operating currents, conserving power.
Please note that these answers are general and may vary depending on specific application requirements. It's always recommended to refer to the datasheet and consult the manufacturer for detailed information.