UCC2808A-2EP
- Supports Defense and Aerospace applications
- Controlled baseline:
- One assembly or test site, one fabrication site
- Extended product life cycle
- Product traceability
- Extended temperature performance: −55°C to +125°C
- Dual output drive stages in push-pull configuration
- Current-sense discharge transistor to improve dynamic response
- Typical starting current: 130µA
- Typical run current: 1mA
- Operation to 1MHz
- Internal soft-start
- On-chip error amplifier with 2MHz gain bandwidth product
- On-chip VDD clamping
- Output drive stages capable of 500mA peak-source current, 1A peak-sink current
The UCC2808A-xEP is a family of BiCMOS push-pull, high-speed, low-power, pulse-width modulators. The UCC2808A-xEP contains all of the control and drive circuitry required for off-line or DC/DC fixed frequency current-mode switching power supplies with a minimal external parts count.
The UCC2808A-xEP dual output drive stages are arranged in a push-pull configuration. Both outputs switch at half the oscillator frequency using a toggle flip-flop. The dead time between the two outputs is typically 60ns to 200ns, depending on the values of the timing capacitor and resistors. The output stage duty cycle is limited to less than 50%.
The UCC2808A-xEP family offers a variety of package options and choice of undervoltage lockout levels. The family has UVLO thresholds and hysteresis options for off-line and battery-powered systems. Thresholds are shown in Device Comparison Table.
The UCC2808A-xEP is an enhanced version of the UCC2808 family. The significant difference between families is that the A versions feature an internal discharge transistor from the CS pin to ground, which is activated each clock cycle during the oscillator dead time. The internal discharge transistor discharges any filter capacitance on the CS pin during each cycle and helps minimize filter capacitor values and current-sense delay.
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技術文件
| 重要文件 | 類型 | 標題 | 格式選項 | 下載最新的英文版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 資料表 | UCC2808A-xEP Low-Power Current Mode Push-Pull PWM datasheet (Rev. C) | PDF | HTML | 2025/8/14 | ||
| * | 輻射及可靠性報告 | UCC2808-EP Enhanced Product Qualification and Reliability Report | PDF | HTML | 2025/6/2 |
設計與開發
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| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (D) | 8 | Ultra Librarian |
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