改进的电流模式PWM控制器 Improved Current Mode PWM Controller
DESCRIPON
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.
FEATURES
• Pin-for-Pin Compatible With the UC3846
• 65ns Typical Delay From Shutdown to Outputs, and 50ns Typical Delay From Sync to Outputs
• Improved Current Sense Amplifier With Reduced Noise Sensitivity
• Differential Current Sense with 3V Common Mode Range
• Trimmed Oscillator Discharge Current for Accurate Deadband Control
• Accurate 1V Shutdown Threshold
• High Current Dual Totem Pole Outputs 1.5A peak
• TTL Compatible Oscillator SYNC Pin Thresholds
• 4kV ESD Protection
输出电流 1.5 A
耗散功率 1000 mW
调节输出数 2
上升时间 40 ns
开关频率 220 kHz
拓扑结构 Boost, Flyback, Forward, Full-Bridge, Half-Bridge, Push-Pull
最大占空比 50 %
下降时间 40 ns
工作温度Max 150 ℃
工作温度Min -55 ℃
耗散功率Max 1000 mW
安装方式 Surface Mount
引脚数 20
封装 LCCC-20
封装 LCCC-20
工作温度 -55℃ ~ 125℃
产品生命周期 Active
包装方式 Tube
RoHS标准 Non-Compliant
含铅标准 Contains Lead
ECCN代码 EAR99
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
UC1856L20883B TI 德州仪器 | 当前型号 | 当前型号 |
5962-86806012A 德州仪器 | 类似代替 | UC1856L20883B和5962-86806012A的区别 |
UC1856L20 德州仪器 | 类似代替 | UC1856L20883B和UC1856L20的区别 |
UC1856L 德州仪器 | 类似代替 | UC1856L20883B和UC1856L的区别 |