高速PWM控制器 High Speed PWM Controller
The UC1823 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, 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 the output. An under-voltage lockout section with 800mV of hysteresis assures low start up current. During under-voltage lockout, the output is high impedance. The current limit reference pin 11 is a DC input voltage to the current limit comparator. Consult specifications for details.
These devices feature a totem pole output designed to source and sink high peak currents from capacitive loads, such as the gate of a power MOSFET. The on state is defined as a high level.
频率 1.00 MHz
电源电压DC 10.0V min
输出接口数 1
输出电压 13.0 V
输出电流 1500 mA
调节输出数 1
上升时间 30 ns
开关频率 1000 kHz
拓扑结构 Buck, Boost, Flyback, Forward
占空比 100 %
最大占空比 85 %
下降时间 30 ns
工作温度Max 70 ℃
工作温度Min 0 ℃
安装方式 Surface Mount
引脚数 20
封装 PLCC-20
封装 PLCC-20
工作温度 0℃ ~ 70℃
产品生命周期 Active
包装方式 Tube
RoHS标准 RoHS Compliant
含铅标准 Lead Free
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC3823Q TI 德州仪器 | 当前型号 | 当前型号 |
UC3823QTR 德州仪器 | 完全替代 | UC3823Q和UC3823QTR的区别 |
UC3823QTRG3 德州仪器 | 完全替代 | UC3823Q和UC3823QTRG3的区别 |