Category: Integrated Circuit (IC)
Use: Power Management
Characteristics: - High-performance current mode PWM controller - Designed for off-line and DC-to-DC converter applications - Provides necessary features to implement a complete power supply control system - Offers protection features such as overvoltage, undervoltage, and overcurrent protection
Package: SOIC-8
Essence: The UCC2804DTR/81260G4 is an integrated circuit that serves as a high-performance current mode PWM controller. It is commonly used in power management applications to regulate and control power supplies.
Packaging/Quantity: The UCC2804DTR/81260G4 is available in a small outline integrated circuit (SOIC) package with 8 pins. It is typically sold in reels or tubes containing multiple units.
The UCC2804DTR/81260G4 has the following pin configuration:
```
| | --| 1 2 3 |-- VCC --| 4 5 6 |-- GND --| 7 8 9 |-- COMP |___________| ```
Pin Description: - Pin 1: VCC - Positive supply voltage input - Pin 2: GND - Ground reference - Pin 3: COMP - Compensation pin for feedback control
Current Mode Control: The UCC2804DTR/81260G4 utilizes current mode control to regulate the output voltage of power supplies. This control method provides improved stability and transient response.
Protection Features: The IC incorporates various protection features to ensure safe operation. These include overvoltage protection, undervoltage lockout, and overcurrent protection.
Soft Start Function: The soft start function gradually ramps up the output voltage during startup, reducing stress on components and preventing excessive inrush current.
Error Amplifier: The built-in error amplifier allows precise regulation of the output voltage by comparing it with a reference voltage.
The UCC2804DTR/81260G4 operates based on the principle of current mode control. It regulates the output voltage by continuously monitoring the current flowing through the power supply and adjusting the duty cycle of the PWM signal accordingly. By maintaining a stable current flow, it ensures a consistent output voltage.
The error amplifier compares the output voltage with a reference voltage and generates an error signal. This signal is then fed into the PWM comparator, which controls the switching of the power MOSFET or transistor. The switching frequency and duty cycle are adjusted dynamically to maintain the desired output voltage.
The UCC2804DTR/81260G4 is commonly used in various power management applications, including:
Switching Power Supplies: It is widely employed in the design of switching power supplies for computers, telecommunication equipment, industrial machinery, and consumer electronics.
LED Lighting: The IC can be utilized in LED lighting systems to regulate the current and ensure stable illumination.
Battery Chargers: It finds application in battery chargers, both for portable devices and electric vehicles, providing efficient and controlled charging.
Motor Control: The UCC2804DTR/81260G4 can be integrated into motor control circuits to regulate the power supply for motors, ensuring smooth operation and protection against overvoltage or overcurrent conditions.
These alternative models offer similar functionalities and can be considered
What is the maximum operating voltage for UCC2804DTR/81260G4?
- The maximum operating voltage for UCC2804DTR/81260G4 is 30V.
What is the typical switching frequency of UCC2804DTR/81260G4?
- The typical switching frequency of UCC2804DTR/81260G4 is 100kHz.
Can UCC2804DTR/81260G4 be used in flyback converter applications?
- Yes, UCC2804DTR/81260G4 can be used in flyback converter applications.
What is the maximum duty cycle supported by UCC2804DTR/81260G4?
- The maximum duty cycle supported by UCC2804DTR/81260G4 is 50%.
Is UCC2804DTR/81260G4 suitable for power factor correction (PFC) applications?
- Yes, UCC2804DTR/81260G4 is suitable for power factor correction (PFC) applications.
What is the recommended input voltage range for UCC2804DTR/81260G4?
- The recommended input voltage range for UCC2804DTR/81260G4 is 10V to 30V.
Can UCC2804DTR/81260G4 be used in offline AC-DC converter designs?
- Yes, UCC2804DTR/81260G4 can be used in offline AC-DC converter designs.
What type of protection features does UCC2804DTR/81260G4 offer?
- UCC2804DTR/81260G4 offers overcurrent protection and thermal shutdown features.
Is UCC2804DTR/81260G4 compatible with digital control interfaces?
- No, UCC2804DTR/81260G4 is an analog controller and not compatible with digital control interfaces.
What are the typical application circuits for UCC2804DTR/81260G4?
- Typical application circuits for UCC2804DTR/81260G4 include LED drivers, battery chargers, and DC-DC converters.