电流模式PWM控制器 Current Mode PWM Controller
**Description**
The UC1842A/3A/4A/5A family of control ICs is a pin for pin compatible improved version of the UC3842/3/4/5 family. Providing the necessary features to control current mode switched mode power supplies, this family has the following improved features. Start up current is guaranteed 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.
**Features**
频率 450 kHz
电源电压DC 12.0V min
输出接口数 1
输入电压DC 25.0 V
输出电压 15.0 V
输出电流 1 A
调节输出数 1
上升时间 50 ns
开关频率 500kHz MAX
拓扑结构 Buck, Boost, Flyback, Forward
最大占空比 48 %
下降时间 50 ns
工作温度Max 70 ℃
工作温度Min 0 ℃
引脚数 8
封装 SOIC-8
封装 SOIC-8
工作温度 0℃ ~ 70℃ TA
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Lead Free