The UC1825 family of PWM control ICs is optimized for high frequency switched mode power supply applications. Particular care was given to minimizing propagation delays through the comparators and logic circuitry while maximizing bandwidth and slew rate of the error amplifier. This controller is designed for use in either current-mode or voltage mode systems with the capability for input voltage feed-forward.
Protection circuitry includes a current limit comparator with a 1V threshold, a TTL compatible shutdown port, and a soft start pin which will double as a maximum duty cycle clamp. The logic is fully latched to provide jitter free operation and prohibit multiple pulses at an output. An under-voltage lockout section with 800mV of hysteresis assures low start up current.
| UC3825M | |
| Control Method | Current,Voltage |
| Duty Cycle (Max) (%) | 50 |
| Frequency (Max) (kHz) | 1000 |
| UVLO Thresholds On/Off (V) | 9.2/8.4 |
| Pin/Package | 16CDIP |
| Power (Min) (W) | 50 |
| Power (Max) (W) | 350 |
| Vin (Min) (V) | 8.4 |
| Vin (Max) (V) | 30 |
| Regulated Outputs (#) | 2 |
| 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 |
| UC3825J | ACTIVE | 0 to 70 | 7.89 | 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 |
| UC3825J | TBD | A42 | N/A for Pkg Type | UC3825J | UC3825J |
| 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 |
