UC1842A
- Optimized for Off-Line and DC-DC Converters
- Low Start-Up Current (< 0.5mA)
- Trimmed Oscillator Discharge Current
- Automatic Feedforward Compensation
- Pulse-by-Pulse Current Limiting
- Enhanced Load Response Characteristics
- Undervoltage Lockout With Hysteresis
- Double Pulse Suppression
- High-Current Totem Pole Output
- Internally-Trimmed Bandgap Reference
- Up to 500kHz Operation
- Create a Custom Design Using the UCx84xA With the WEBENCH Power Designer
The UCx84xA family of control devices is a pin-for-pin compatible improved version of the UCx84x family. Providing the necessary features to control current-mode or switched-mode power supplies, this family of devices has many improved features: startup current is less than 0.5mA, oscillator discharge is trimmed to 8.3mA, and during UVLO, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
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檢視所有 9 | 類型 | 標題 | 日期 | ||
|---|---|---|---|---|
| * | Data sheet | UCx84xA Current-Mode PWM Controller datasheet (Rev. H) | PDF | HTML | 2024年 10月 11日 |
| * | SMD | UC1842A SMD 5962-86704 | 2016年 6月 21日 | |
| Application note | DN-26 UC3842A Low-Cost Start-up and Fault Protection Circuit | 1999年 9月 5日 | ||
| Application note | DN-27 UC1842/UC1842A Family - Summary of Functional Differences | 1999年 9月 5日 | ||
| Application note | DN-29 UC3842A Family - Frequency Foldback Technique Provides Protection | 1999年 9月 5日 | ||
| Application note | DN-30 Programmable Electronic Circuit Breaker | 1999年 9月 5日 | ||
| Application note | DN-40 The Effects of Oscillator Discharge Current Variations on Maximum Duty | 1999年 9月 5日 | ||
| Application note | DN-42A Design Considerations for Transitioning from UC3842 to the New UCC3802 | 1999年 9月 5日 | ||
| Application note | DN-62 Switching Power Supply Topology Voltage Mode vs. Current Mode | 1999年 9月 5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 |
|---|---|---|
| CDIP (JG) | 8 | Ultra Librarian |
| LCCC (FK) | 20 | Ultra Librarian |
訂購與品質
內含資訊：
- 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
內含資訊：
- 晶圓廠位置
- 組裝地點