Overview
The Texas Instruments UCC2808D-2G4 is a low-power current mode push-pull PWM controller IC designed for use in DC-DC converters. This device is part of the UCC2808 family and is known for its high efficiency and minimal external parts count. It operates in a push-pull configuration, making it suitable for various power supply applications, including step-up and step-down DC-DC converters.
Key Specifications
| Parameter | Value | Parameter | Value |
|---|---|---|---|
| Manufacturer | Texas Instruments | Topology | Full Bridge, Half Bridge, Push-Pull |
| Number of Outputs | 2 Output | Switching Frequency | 1 MHz |
| Duty Cycle - Max | 50 % | Input Voltage | 3.5V to 40V |
| Output Voltage | Regulated output voltage | Output Current | 1 A |
| Minimum Operating Temperature | -40°C | Maximum Operating Temperature | +85°C |
| Mounting Style | SMD/SMT | Package | 8-SOIC (0.154, 3.90mm Width) |
| Fall Time | 25 ns | Rise Time | 25 ns |
| Series | UCC2808-2 | Factory Pack Quantity | 75 |
| Type | Current Mode PWM Controllers |
Key Features
- Low-power current mode push-pull PWM controller
- High efficiency over the entire operation range
- Wide operating voltage range of 3.5V to 40V
- Internal soft-start and on-chip error amplifier with a 2-MHz gain bandwidth product
- Output drive stages capable of 500-mA peak source current and 1-A peak sink current
- On-chip VDD clamping and undervoltage lockout (UVLO) thresholds
- Minimal external parts count for current-mode switching power supplies
Applications
- Server and desktop power supplies
- Telecom power supplies
- DC-DC converters
- Switched-mode power supplies
Q & A
- What is the UCC2808D-2G4 used for?
The UCC2808D-2G4 is used as a low-power current mode push-pull PWM controller in DC-DC converters and other switching power supplies. - What is the operating voltage range of the UCC2808D-2G4?
The operating voltage range is from 3.5V to 40V. - What is the switching frequency of the UCC2808D-2G4?
The switching frequency is approximately 1 MHz. - How many outputs does the UCC2808D-2G4 have?
The device has 2 outputs. - What is the maximum operating temperature of the UCC2808D-2G4?
The maximum operating temperature is +85°C. - What package type does the UCC2808D-2G4 come in?
The device comes in an 8-SOIC package. - Does the UCC2808D-2G4 have internal soft-start and error amplifier?
Yes, it has internal soft-start and an on-chip error amplifier with a 2-MHz gain bandwidth product. - What are some common applications of the UCC2808D-2G4?
Common applications include server and desktop power supplies, telecom power supplies, DC-DC converters, and switched-mode power supplies. - What is the duty cycle limit of the UCC2808D-2G4?
The duty cycle is limited to less than 50%. - Does the UCC2808D-2G4 support undervoltage lockout (UVLO)?
Yes, it supports UVLO with specific turn-on and turn-off thresholds.
