The UC1842/3/4/5 family of control devices provides the necessary features to implement off-line or dc-to-dc fixed frequency current mode control schemes with a minimal external parts count. Internally implemented circuits include under-voltage lockout featuring start up current less than 1 mA, a precision reference trimmed for accuracy at the error amp input, logic to insure latched operation, a PWM comparator which also provides current limit control, and a totem pole output stage designed to source or sink high peak current. The output stage, suitable for driving N-Channel MOSFETs, is low in the off state.
Differences between members of this family are the under-voltage lockout thresholds and maximum duty cycle ranges
| UC3845AM | |
| Control Method | Current |
| Duty Cycle (Max) (%) | 50 |
| Frequency (Max) (kHz) | 450 |
| UVLO Thresholds On/Off (V) | 8.4/7.6 |
| Pin/Package | 8CDIP |
| Power (Min) (W) | 30 |
| Power (Max) (W) | 350 |
| Vin (Min) (V) | 7.6 |
| Vin (Max) (V) | 30 |
| Vout (Min) (V) | 0.5 |
| Regulated Outputs (#) | 1 |
| Operating Temperature Range (C) | 0 to 70 |
| 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 |
| UC3845AJ | ACTIVE | 0 to 70 | 2.40 | 100u | CDIP (JG) | 8 | 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 |
| UC3845AJ | TBD | A42 | N/A for Pkg Type | UC3845AJ | UC3845AJ |
| 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 |