Overview
The UCC2804D/81221G4 is a high-performance switching controller manufactured by Texas Instruments. It is designed for applications requiring efficient power management, such as boost, flyback, and forward topologies. This model is housed in an 8-SOIC package, making it suitable for compact designs. Its key market positioning is in industrial and automotive electronics, targeting engineers and designers who need reliable and efficient power control solutions. The UCC2804D/81221G4 stands out for its wide operating voltage range, high switching frequency, and robust fault protection features.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Manufacturer | Texas Instruments | - | - |
| Topology | Boost, Flyback, Forward | - | - |
| Start Voltage | 12.5 | V | - |
| Supply Voltage (Vcc/Vdd) | 8.3 ~ 12 | V | - |
| Duty Cycle | 49 | % | - |
| Switching Frequency | Up to 1 | MHz | - |
| Fault Protection | Current Limit | - | - |
| Control Features | Frequency Control | - | - |
| Operating Temperature | -40 ~ 85 | °C | - |
| Package | 8-SOIC | - | 3.90mm wide |
| RoHS Compliance | Yes | - | - |
Key Features
- Supports boost, flyback, and forward topologies for versatile power management.
- Wide operating voltage range (8.3V to 12V) ensures compatibility with various power sources.
- High switching frequency of up to 1MHz enables efficient power conversion.
- Built-in current limit fault protection enhances system reliability.
- Compact 8-SOIC package ideal for space-constrained designs.
Applications
The UCC2804D/81221G4 is widely used in industrial automation, automotive electronics, and power supply systems. Its ability to handle boost, flyback, and forward topologies makes it suitable for applications such as DC-DC converters, battery chargers, and LED drivers. In automotive systems, it is employed in power management modules to ensure efficient and reliable operation. Its robust design and fault protection features make it a preferred choice for harsh environments.
Q & A
1. What is the operating voltage range of the UCC2804D/81221G4?
The operating voltage range is 8.3V to 12V.
2. What topologies does this controller support?
It supports boost, flyback, and forward topologies.
3. What is the maximum switching frequency?
The maximum switching frequency is 1MHz.
4. Does the UCC2804D/81221G4 include fault protection?
Yes, it includes current limit fault protection.
5. What is the operating temperature range?
The operating temperature range is -40°C to 85°C.
6. Is the UCC2804D/81221G4 RoHS compliant?
Yes, it is RoHS compliant.
7. What package does this controller use?
It uses an 8-SOIC package.
8. What is the duty cycle of the UCC2804D/81221G4?
The duty cycle is 49%.
9. What are the typical applications of this controller?
Typical applications include DC-DC converters, battery chargers, and LED drivers.
10. Is the UCC2804D/81221G4 suitable for automotive systems?
Yes, it is suitable for automotive power management modules.
