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
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | UCC2808A-xEP Low-Power Current Mode Push-Pull PWM datasheet (Rev. C) | PDF | HTML | 2025年 8月 14日 |
| * | Radiation & reliability report | UCC2808-EP Enhanced Product Qualification and Reliability Report | PDF | HTML | 2025年 6月 2日 |
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 |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。