Overview
The UCC2802DTR, produced by Texas Instruments, is a high-speed, low-power integrated circuit designed for off-line and DC-to-DC fixed frequency current-mode switching mode power supplies. This device is part of the UCC280x family and is notable for its minimal parts count and comprehensive control and drive components. It shares the same pin configuration as the UCx84x family, making it a versatile option for various power supply applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SOIC-8 |
| Operating Temperature Range | -40°C to 125°C |
| Output Current | 1 A |
| Operating Frequency | Up to 1 MHz |
| Supply Current (Typical) | 100 µA (starting), 500 µA (operating) |
| Voltage Reference Tolerance | 1.5% |
| UVLO (Under Voltage Lock Out) | 12.5V/8.3V |
| Duty Cycle | 100% |
Key Features
- Internal soft start and full-cycle soft start
- Internal leading-edge blanking of the current-sense input
- 1-A totem-pole output
- 70-ns typical response from current-sense to gate drive output
- Low power consumption with 100-µA typical starting supply current and 500-µA typical operating supply current
- Same pinout as UC3842 and UC3842A
Applications
The UCC2802DTR is suitable for a variety of power supply applications, including off-line and DC-to-DC fixed frequency current-mode switching mode power supplies. It is particularly useful in designs where minimal parts count and high efficiency are required.
Q & A
- What is the operating temperature range of the UCC2802DTR?
The operating temperature range is -40°C to 125°C. - What is the typical operating supply current of the UCC2802DTR?
The typical operating supply current is 500 µA. - What is the maximum operating frequency of the UCC2802DTR?
The maximum operating frequency is up to 1 MHz. - Does the UCC2802DTR have internal soft start?
Yes, it has internal soft start and full-cycle soft start. - What is the output current capability of the UCC2802DTR?
The output current capability is 1 A. - Is the UCC2802DTR compatible with the UCx84x family pinout?
Yes, it shares the same pin configuration as the UCx84x family. - What is the voltage reference tolerance of the UCC2802DTR?
The voltage reference tolerance is 1.5%. - What is the UVLO (Under Voltage Lock Out) for the UCC2802DTR?
The UVLO is 12.5V/8.3V. - What is the duty cycle capability of the UCC2802DTR?
The duty cycle capability is 100%. - Where can I find more detailed specifications and support for the UCC2802DTR?
You can find more detailed specifications and support on the Texas Instruments website and through their technical support forums.
