The UC3856 is a high performance version of the popular UC3846 series of current mode controllers, and is intended for both design upgrades and new applications where speed and accuracy are important. All input to output delays have been minimized, and the current sense output is slew rate limited to reduce noise sensitivity. Fast 1.5A peak output stages have been added to allow rapid switching of power FETs.
A low impedance TTL compatible sync output has been implemented with a tri-state function when used as a sync input.
Internal chip grounding has been improved to minimize internal \x93noise\x94 caused when driving large capacitive loads. This, in conjunction with the improved differential current sense amplifier results in enhanced noise immunity
| UC2856M | |
| Control Method | Current |
| Duty Cycle (Max) (%) | 50 |
| Frequency (Max) (kHz) | 1000 |
| UVLO Thresholds On/Off (V) | 7.7/7 |
| Pin/Package | 16CDIP |
| Vin (Min) (V) | 8 |
| Vin (Max) (V) | 40 |
| Regulated Outputs (#) | 2 |
| Operating Temperature Range (C) | -40 to 85 |
| Rating | Military |
| 器件 | 状态 | 温度 (oC) | 价格（美元） | 封装 | 引脚 | 封装数量 | 封装载体 | 丝印标记 |
| UC2856J | ACTIVE | -40 to 85 | 11.12 | 100u | CDIP (JG) | 16 | 1 | TUBE |
| 器件 | 环保计划* | 铅/焊球涂层 | MSL 等级/回流焊峰 | 环保信息与无铅 (Pb-free) | DPPM / MTBF / FIT 率 |
| UC2856J | TBD | A42 | N/A for Pkg Type | UC2856J | UC2856J |
| 培训内容 | 型号 | 软件/工具类型 |
| 最常用开关模式电源的功率级设计器 | POWERSTAGE-DESIGNER | 分析软件 |
