UC2845AQ
- Extended temperature performance of –40°C to 125°C
- Optimized for off-line and dc to dc converters
- Low start up current (<0.5mA)
- Trimmed oscillator discharge current
- Automatic feed forward compensation
- Pulse-by-pulse current limiting
- Enhanced load response characteristics
- Under-voltage lockout with hysteresis
- Double pulse suppression
- High current totem pole output
- Internally trimmed bandgap reference
- 500kHz operation
- Low ro error amp
The UC2842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC2842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is designed to be less than 0.5mA. Oscillator discharge is trimmed to 8.3mA. During under voltage lockout, the output stage can sink at least 10mA at less than 1.2V for VCC over 5V.
The difference between members of this family are shown in the table below.
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| 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 | UC2842AQ, UC2843AQ, UC2844AQ, UC2845AQ Current-mode PWM Controller datasheet (Rev. A) | PDF | HTML | 2024/10/11 |
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 |
| SOIC (D) | 14 | Ultra Librarian |
訂購與品質
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