UCC35705
- Greater Than 4-MHz Operation
- Integrated Oscillator / Voltage Feed Forward Compensation
- >4:1 Input Voltage Range
- 25-ns Current Limit Delay
- Programmable Maximum Duty Cycle Clamp
- Optocoupler Interface
- 50-µA Start-Up Current
- 4.2-mA Operating Current @ 1 MHz
- Smallest Footprint of the 8-pin MSOP Package Minimizes
Board Area and Height
The UCC35705 and UCC35706 devices are 8-pin voltage mode primary side controllers with fast over-current protection. These devices are used as core high-speed building blocks in high performance isolated and non-isolated power converters.
UCC35705/UCC35706 devices feature a high speed oscillator with integrated feed-forward compensation for improved converter performance. A typical current sense to output delay time of 25 ns provides fast response to overload conditions. The IC also provides an accurate programmable maximum duty cycle clamp for increased protection which can also be disabled for the oscillator to run at maximum possible duty cycle.
Two UVLO options are offered. The UCC35705 with lower turn-on voltage is intended for dc-to-dc converters while the higher turn-on voltage and the wider UVLO range of the UCC35706 is better suited for offline applications.
The UCC35705/UCC35706 family is offered in 8-pin MSOP (DGK), SOIC (D) and PDIP (P) packages.
技術文件
| 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | High Speed Voltage Mode Pulse Width Modulator datasheet (Rev. B) | 2010年 10月 15日 | |
| Selection guide | Power Management Guide 2018 (Rev. R) | 2018年 6月 25日 | ||
| User guide | Using the UCC35705 | 2002年 11月 18日 | ||
| More literature | Seminar 300 Topic 8 - Switching Power Supply Design Review | 2001年 2月 15日 | ||
| More literature | Seminar 400 Topic 2 - Design of Flyback Transformers and Filter Inductors | 2001年 2月 15日 |
設計與開發
如需其他條款或必要資源，請按一下下方的任何標題以檢視詳細頁面 (如有)。
UCC35705OR6CALC — 免費工具： UCC35705/6 設計導入計算機
| 封裝 | 引腳 | 下載 |
|---|---|---|
| SOIC (D) | 8 | 檢視選項 |
| VSSOP (DGK) | 8 | 檢視選項 |
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
- 資格摘要
- 進行中可靠性監測
- 晶圓廠位置
- 組裝地點